In this appeal, we address for the first time in our circuit whether in assessing propriety of sentence enhancement under 21 U.S.C. § 841(b)(1)(A), a sentencing court may consider the relationship between previ- . ous convictions to ascertain if they constitute a single criminal episode and thus should be counted only as one prior conviction. The district court determined that enhancement was appropriate because the previous convictions were sufficiently distinct in time to be counted separately toward the two prior convictions necessary to enhance an offender’s sentence under section 841(b)(1)(A). We AFFIRM.
I. BACKGROUND
In 1990, defendant-appellant James Robert Rice engaged in negotiations to purchase *603 twenty kilograms of cocaine from confidential federal informants and purchased seven kilograms of cocaine for $120,000 from undercover federal officers. Upon fleeing the scene, Rice’s automobile collided with that of a federal agent. After a high speed chase, Rice was arrested.
Rice was charged with possession with intent to distribute cocaine in violation of 21 U.S.C. § 841(a)(1) and 18 U.S.C. § 2 (Count One); conspiracy to possess with intent to distribute cocaine in violation of 21 U.S.C. § 846 (Count Two); carrying a firearm during a drug trafficking crime in violation of 18 U.S.C. § 924(c) and 18 U.S.C. § 2 (Count Three); and use of a deadly weapon to impede official duties in violation of 18 U.S.C. § 111 (Count Four). On the day Rice’s trial began, but before the jury was empaneled, the Assistant United States Attorney announced in open court that he was filing an information pursuant to sections 841(b)(1)(A) 1 and 851(a) 2 notifying the court he would seek an enhanced sentence of mandatory life imprisonment. The government provided defense counsel with two copies of the information.
The government listed three prior convictions in its information supporting its request for mandatory life under section 841(b)(1)(A). The first conviction listed by the government was a state drug felony conviction in Dade County, Florida. Specifically, on November 6, 1979, Rice pleaded guilty to conspiring between September 15, 1978, and November 13, 1978, to sell, deliver and possess with intent to sell or deliver over 100 pounds of marijuana, and methaqualone (quaaludes) in violation of Florida law. Rice was sentenced to a ten-year term. Subsequently, the Dade County court ordered that Rice be allowed to serve these sentences in North Carolina under an interstate compact agreement because it was anticipated that Rice would be pleading guilty to similar charges there.
The second conviction enumerated by the government was a June 9, 1980, state felony drug conviction in North Carolina. Rice pleaded guilty in Mecklenburg County, North Carolina, to three counts of sale and delivery of cocaine, three counts of possession with intent to sell and deliver cocaine and of conspiracy to sell cocaine, in violation of North Carolina law. On at least two occasions, September 5,1978, and September 7, 1978, Rice sold cocaine to the same undercover police officer. He was sentenced to two consecutive sentences of ten years imprisonment with five years suspended as to one of the sentences. These sentences were to run concurrently with the sentence imposed in Dade County, and the court ordered that he be incarcerated by the North Carolina Department of Corrections according to the terms of his plea agreement.
Rice’s third conviction was for interstate transportation (use of commercial air facilities at Raleigh-Durham Airport in Raleigh, North Carolina) in aid of a racketeering enterprise which imported narcotics in violation of 18 U.S.C. § 1952. Rice pleaded guilty in the United States District Court for the Eastern District of North Carolina to this charge for smuggling marijuana, quaaludes and cocaine into the United States, specifically North Carolina, from the Caribbean Region between November 10 and November 14, 1978. On May 28, 1983, Rice was sentenced to a five-year term in prison. The district court permitted Rice to serve this sentence in the North Carolina prison system where he was already incarcerated.
After trial on the 1990 charges, the jury found Rice guilty on all four counts. Rice was sentenced to life imprisonment on Counts One and Two. Rice also received *604 sentences of five years to run consecutively to the life sentence on Count Three and ten years to run concurrently with the life sentence on Count Four. In ordering Rice’s sentence the district court found, inter alia, that the government complied with the filing mandate of section 851(a) and that the three prior convictions listed in the section 851(a) information were not related; therefore, the convictions could be counted separately to enhance his sentence pursuant to section 841(b)(1)(A).
Rice challenges his sentence to mandatory life imprisonment arguing (1) that the government failed to notify the court and the defense “before trial,” as required by 21 U.S.C. § 851(a), that it intended to rely upon prior convictions for enhancement of sentence; (2) that the district court erred in concluding that the prior convictions were separate and distinct offenses for which enhancement was appropriate under section 841(b)(1)(A); (3) that the district court similarly erred in concluding that the prior convictions were separate and distinct offenses by which to find the appellant a “career offender” under U.S.S.G. §§ 4B1.1, 4A1.2 (Nov. 1990); and (4) that the district court erred in computing the amount of drugs to be used in determining his sentence under the Sentencing Guidelines.
II. DISCUSSION
A. Timeliness of Section 851 Filing
Rice argues that his sentence was improperly enhanced under 21 U.S.C. § 841 because the government did not file an information with the court or provide such information to Rice or his counsel notifying them of the government’s intention to rely on prior convictions for sentence enhancement prior to trial as required by 21 U.S.C. § 851(a). Rice asks this court to determine that section 851(a)’s requirement for filing of the information “before trial” means prior to the first day of trial, even though the jury has not been empaneled.
In
United States v. Weaver,
B. Sentencing Enhancement Under Section 8U(b)(l)(A)
Rice contends that the prior convictions used by the district court to enhance his sentence under section 841(b)(1)(A) were related and, therefore, constituted one conviction. Thus, he argues that the district court *605 erred in sentencing him to mandatory life in prison. The government contends that Rice failed to object to the enhancement under section 841(b)(1)(A) before, during or after sentencing and consequently is procedurally barred from raising this claim on appeal absent manifest injustice. The government’s contentions are not based on a complete review of the record. The record shows that Rice raised this objection by response to the information prior to sentencing, 4 in the objections to Rice’s Presentenee Investigation Report (“PSR”), 5 and at the two sentencing hearings. 6 These objections clearly preserved Rice’s contention that section 841(b)(1)(A) enhancement on the grounds of relatedness of previous convictions was improper. Hence, we consider the merits of Rice’s arguments on the section 841(b)(1)(A) enhancement.
Whether a court may consider the relationship of previous convictions to determine if they constitute a single criminal episode, which should be counted as one prior conviction for purposes of sentence enhancement under section 841(b)(1)(A), is a question of first impression in this circuit. While on its face, section 841(b)(1)(A) does not require that a court evaluate the relationship of prior convictions, we agree with our sister circuits that if the prior convictions resulted from acts forming a single criminal episode, then they should be treated as a single conviction for sentence enhancement under section 841(b)(1)(A).
7
United States v. Liquori, 5
*606
F.3d 435, 437 (9th Cir.1993) (“[PJrior convictions should only be considered for purposes of enhancement under section 841(b)(1)(A) if they constitute separate criminal episodes rather than a single act of criminality.”),
cert. denied,
— U.S. -,
1. Concurrent Sentences
Rice argues that although he was convicted and sentenced by three separate courts, one federal and two different state courts, he received concurrent sentences which he served in a single state institution. Therefore, he contended that his convictions should qualify as a single conviction for sentencing under section 841(b)(1)(A). He suggests that United States v. Blackwood presents a situation analogous to the one we now confront. While we agree with the analysis of Block-wood, we disagree that the facts of Black-wood are sufficiently analogous to the instant case to be persuasive. 8
In Blackwood, the defendant was arrested when police officers found a large quantity of *607 marijuana in the vehicle that the defendant was driving. Less than two hours after arresting him, officers secured a search warrant and searched a motel room where he stayed. There, officers found more marijuana. In a consolidated state trial, the defendant was convicted on two counts of possession, and was subsequently sentenced to two five-year terms running concurrently.
The Fourth Circuit reviewed 18 U.S.C.App. § 1202(a) and 18 U.S.C. § 924(e) and concluded that legislative history and government interpretation indicated that the “predicate convictions should have occurred on occasions ‘distinct in time’ ” in order to be considered separate under section 841(b)(1)(A).
Blackwood,
Contrary to Rice’s suggestion, the Fourth Circuit did not purport to base its decision primarily on the state court’s discretion in consolidating the charges for trial or sentencing the defendant to concurrent terms. Moreover, we decline to hold that the mere fact that separate courts choose to set sentences to run concurrently creates a presumption that the underlying convictions were associated for the purposes of section 841(b)(1)(A).
9
See Liquori, 5
F.3d at 438 (holding that concurrent sentences are not conclusive evidence of relation between prior convictions for purposes of section 841(b)(1)(A));
cf. United States v. Castro-Perpia,
Rice also asks us to consider that he served his sentences in one institution. He apparently was allowed to serve his terms in the North Carolina prison system under an interstate compact agreement and under agreement by the federal government. We see no plausible connection between the judicial discretion and fiscal economy served by allowing a prisoner to serve sentences in his home state on the one hand and the possible relationship of offenses on the other that should preclude a later court’s finding that Rice is the type of repeat offender sought to be punished by the statute. In this case, serving several sentences from various jurisdictions in one institution is indistinguishable from serving concurrent sentences and thus is treated accordingly. Therefore, we conclude that, although Rice was allowed to serve his sentences in one jail during the same term of years, his convictions were not “related” for the purpose.of applying section 841(b)(1)(A).
2. Common Scheme or Plan
Rice argues that his convictions arose from one investigation which was coordinated by federal officers; therefore, his convictions should be counted as one conviction as arising from a “common scheme or plan.” Appellant’s Brief at 22. We previously have held that the government does not subject a defendant to double jeopardy when it charges him or her with separate acts of distribution even if one act facilitated the next or the acts were part of the same overall transaction.
United States v. Smith,
The Ninth Circuit in
United States v. Maxey,
An ongoing course of criminal conduct such as narcotics trafficking may involve many such criminal episodes, each a discrete occurrence. The fact that all are related, part of a series, or part of a continuous course of criminal dealing, does not necessarily render them a ‘single’ criminal episode, particularly where the episodes occur over time. To so hold would insulate the very career criminals the statute is designed to reach — those continuously engaged in criminal conduct.
Id. at 307 (citations omitted). Because the best marker of recidivism is repetition over time, we hold that convictions which occur on different occasions or are otherwise distinct in time may be considered separate offenses under section 841(b)(1)(A). We conclude that the separate criminal acts for which Rice was convicted, whether or not part of an over-arching conspiracy to smuggle and traffic in drugs in the United States, are not “related” convictions justifying lesser penalties under section 841(b)(1)(A) because they are separate in time and locale and were acts requiring separate planning and execution. Thus, the district court did not err in sentencing Rice to life in prison as mandated by 21 U.S.C. § 841(b)(1)(A).
C. Application of Sentencing Guidelines
Rice parallels his arguments under section 841(b)(1)(A) by contending that the convictions listed in his PSR were related under U.S.S.G. § 4A1.2
10
; therefore, he could not be considered a career offender under the standards of section 4B1.1.
11
While the factors for determining whether a person’s criminal history qualifies him as a career offender differ from that used for statutory enhancement, where the minimum mandatory statutory sentence is higher than the guideline sentence, the mandatory statutory sentence controls. U.S.S.G. § 5Gl.l(b);
United States v. Willis,
III. CONCLUSION
Rice appeals his life sentence for drug-related felonies arguing that the district *609 court erred in finding that he had two prior felonies and thus was incorrect in applying the mandatory sentencing provision of 21 U.S.C. § 841(b)(1)(A). While a court may examine previous convictions to determine if they are related for purposes of constituting prior felony convictions under 21 U.S.C. § 841(b)(1)(A), unless clear error is demonstrated, the district court’s decision will stand. The district court did not err in enhancing Rice’s sentence or in applying the Sentencing Guidelines. Accordingly, we AFFIRM.
Notes
. Section 841(b)(1)(A) provides in pertinent part: “If any person commits a violation of this sub-paragraph ... after two or more prior convictions for a felony drug offense have become final, such person shall be sentenced to a mandatory term of life imprisonment without release....”
§ 841(b)(1)(A).
. Section 851(a)(1) states that
[n]o person who stands convicted of an offense under this part shall be sentenced to increased punishment by reason of one or more prior convictions, unless before trial, or before entry of a plea of guilty, the United States attorney files an information with the court (and serves a copy of such information on the person or counsel for the person) stating in writing the previous convictions to be relied upon.
§ 851(a)(1) (emphasis added).
. The court must afford the defendant an opportunity to affirm or deny that he has been convicted previously. § 851(b). Section 851(c)(1) provides that a person who
denies any allegation of the information of prior conviction, or claims that any conviction alleged is invalid, ... shall file a written response to the information. A copy of the response shall be served upon the United States attorney. The court shall hold a hearing to determine any issues raised by the response which would except the person from increased punishment.
§ 851(c).
. Motion to Strike Sentencing Enhancement and Request for Evidentiary Hearing and Incorporated Memorandum of Law, R2-82 ¶¶ 4-6. See also R13-106.
. R2-80-2 ("The enhancement is the subject of a separate motion raising additional grounds that is being filed simultaneously with these objections. The Defendant would incorporate that motion as a further objection under Paragraph (A), Section 2 [of the PSR].”)
. The district court continued the first evidentia-ry hearing regarding § 851 notice and relatedness of prior convictions under § 841(b). R12-167-20. At several points during the second hearing the court considered Rice's relatedness arguments as to § 841(b)(1)(A) enhancement. R13-168-90, 99, 101-02, 105, and 106. At the second hearing, even the United States attorney acknowledged to the court that Rice had filed the written response including the objection to the enhancement as required by § 851(c). R13-168-106. After sentencing, Rice’s counsel stated:
We adopt and reincorporate all the previous objections we made, that the sentence of enhancement is illegal because the court didn’t have jurisdiction to impose it, and the guideline calculations are also illegal because his correct guidelines are not 360 to life, because he is not a career offender. The cases are related, and we readopt, and incorporate all the previous objections we made on the grounds that the life sentence is illegal.
R13-168-111.
. This is consistent with our interpretations of other sentencing enhancement statutes, particularly 18 U.S.C.App. § 1202(a) and its successor 18 U.S.C. § 924(e). Section 1202(a) and § 924(e) both provided for mandatory sentences for defendants with previous convictions. § 1202(a) did not indicate whether those convictions must have been temporally distinct to be counted separately. However, when challenged, the Solicitor General conceded that § 1202(a) was not meant to count multiple felony convictions arising out of a single criminal episode.
United States v. Petty,
Albeit prior to the
Petty
decision, in
United States v. Greene,
Section 924(e), on the other hand, explicitly requires that a court sentence any person who, violated § 922(g) of Title 18 and who "has three previous convictions ... for a violent felony or a serious drug offense, or both,
committed on occasions different from one another ...
shall be ... imprisoned not less than fifteen years....” 18 U.S.C. § 924(e). This court has held that a defendant who is convicted for three crimes, although all were disposed of in a single proceeding, was subject to § 924(e) enhancement because the crimes were temporally distinct and, therefore, not related.
United States v. Owens,
. The Fourth Circuit was the first circuit to consider a challenge to § 841(b)(l)(A)’s enhancement provisions on the basis that the prior convictions were related.
See Blackwood,
. We also note that Rice's counsel has conceded that concurrent sentencing does not, as a matter of law, compel a finding that the cases were related. R13-168-99.
. Under the Sentencing Guidelines, "[cjases are considered related if they (1) occurred on a single occasion, (2) were part of a single common scheme or plan, or (3) were consolidated for trial or sentencing.” U.S.S.G. § 4A1.2, comment, (n. 3).
. "A defendant is a career offender if (1) the defendant was at least eighteen years old at the time of the instant offense, (2) the instant offense of conviction is a felony that is either a crime of violence or a controlled substance offense, and (3) the defendant has at least two prior felony convictions of a ... controlled substance offense." U.S.S.G. § 4B1.1 (emphasis added).
.Because we have concluded that Rice's life sentences stand under the Sentencing Guidelines, we decline to discuss whether the court, in determining Rice’s sentence, properly included the 20 kilograms of cocaine for which a purchase *609 and sale between Rice and the government was negotiated but never consummated. Even if the court erred, Rice's sentence would be the same. See U.S.S.G. § 5Gl.l(b). His sentence on Count Three of five years running consecutively to his sentences on Counts One, Two and Four also stands as required by statute, 18 U.S.C. § 924(c). In addition, any error by the court in finding Rice to be a career offender as to Count Four also is harmless because the statutory maximum sentence under 18 U.S.C. § 111 was less than the Guidelines’ sentence would have been in any event. See U.S.S.G. § 5Gl.l(a).
