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BoP Lab / Classes / CF

CF vs SMSE vs SSM vs BSpec pace at every track

Lap times across years say as much about the weather as the class. % of CF is each class's best lap as a share of CF's on the same day, so the conditions drop out: 100% is level, less is quicker, and a move in it is the class getting faster or slower against the field.

Class · click a class to switch, + to compare alongside (up to 4: remove one to add another)
1DASB SpecB-specB-SpecB-SPECB-SPEC 3B-SPEC 9B-SPEC 11B-SPEC 12B-SPEC 18B-SPEC 19B-SPEC 61BSBSpcvsBSpec×C6CF×CFCCTACTBCTCCTDE1 16E1 43E1 52E3 0E3 2E3 6E3 46E3 101 TE3 146E4 19E4 85E4 145 TE4 192E4 192 PEPEP 177EPxEX 5EX 7EX 36EX 78EX 146F5F6F500F600F1000FAFBFCFC 46FC 85FEFE 2FE2FFFF 7FF 32FMFPFP 73FP 91FRIFSFVFV 04FV 4FV 17FV 17 #FV 29FV 43FV 49FV 96FXGT-1GT-2GT-XGT1GT1 6GT1 6 PGT1WGT2GT2 09GT2 9GT2 13GT2 19GT2 27GT2 29GT2 42GT2 42 PGT2 106GT3GT3UGTAGTLGTXGTX #GTX 178GTX 190GTX 190 #GTX 190 #PHPIT7ITAITBITCITEITE - OITE - UITE-OITJITRITSPP1P2P2 88PXRSRS7SMSM SM 3SM 3 #SM 8SM 14SM 18SM 18 #SM 29SM 34SM 35SM 40SM 44SM 62SM 72SM 88SM 93SM 95SM 95 TSM 132SM 157SM 160SM 166vsSMSE×SMSE-TSMXSPOSPUSRFSRF 3SRF3SRF3 0SRF3 00SRF3 01SRF3 9SRF3 11SRF3 20SRF3 26SRF3 29SRF3 42SRF3 60SRF3 62SRF3 66SRF3 68SRF3 113vsSSM×STLSTL 16STL 37STL 79STUSTU 23SUNT1T1 07T1 48T1WT2T2 03T2 03 PT2 43T3T3 8T3 28T3 39T3 72T4T4 50T4 89T4 166T4 171TTAUnknownHide inactive classes
Reference · what % is measured against
Tracks · untick to narrow

Closest to the field: CF 100.0% of CF David Loken, Pueblo Motorsports Park Majors May 2016 race

1:201:402:002:20CF race best at Majors May 2016: 1:37.406 (David Loken)CF race best at Colorado Home Heroes Grand Prix 2026: 1:37.686 (Levi Zeidlhack)CF race best at Southeast SARRC 2026: 1:26.210 (W. L. Manofsky)CF race best at Colorado Freedom Sprints 2026: 1:57.321 (Levi Zeidlhack)CF race best at Last Chance 2026: 1:54.780 (Levi Zeidlhack)SMSE race best at SARRC 2020: 1:48.433 (Frederick Baker)SMSE qualifying best at SARRC 2020: 1:47.184 (Frederick Baker)SSM race best at Majors Apr 2016: 1:29.237 (Kevin Kopp)SSM qualifying best at Majors Apr 2016: 1:31.569 (Alan Olson)BSpec race best at Majors Apr 2016: 2:28.161 (Felix Borodaty)BSpec race best at @Mid Ohio Sports Car Course 2016: 1:45.784 (Ted Sahley)BSpec qualifying best at Majors Apr 2016: 2:27.873 (Felix Borodaty)BSpec qualifying best at Majors May 2016: 1:16.860 (David Daughtery)BSpec qualifying best at @Mid Ohio Sports Car Course 2016: 1:48.451 (John Heinricy)Virginia International Raceway · Majors Apr 2016MA2016Summit Point Raceway · Majors Apr 2016MA2016Circuit of St. Louis (formerly Gateway Motorsports · Majors May 2016MM2016Pueblo Motorsports Park · Majors May 2016MM2016Mid-Ohio Sports Car Course · @Mid Ohio Sports Car Course 2016@OSCC2016Michelin Raceway Road Atlanta · SARRC 2020S2020Pueblo Motorsports Park · Colorado Home Heroes Grand Prix 2026CHHGP2026Roebling Road · Southeast SARRC 2026SS2026High Plains Raceway · Colorado Freedom Sprints 2026CFS2026High Plains Raceway · Last Chance 2026LC2026
CFSMSESSMBSpecsolid race · dashed qualifying · slower is lower
100%CF race best at Majors May 2016: 100.0% of CF's (David Loken)CF race best at Colorado Home Heroes Grand Prix 2026: 100.0% of CF's (Levi Zeidlhack)CF race best at Southeast SARRC 2026: 100.0% of CF's (W. L. Manofsky)CF race best at Colorado Freedom Sprints 2026: 100.0% of CF's (Levi Zeidlhack)CF race best at Last Chance 2026: 100.0% of CF's (Levi Zeidlhack)Virginia International Raceway · Majors Apr 2016MA2016Summit Point Raceway · Majors Apr 2016MA2016Circuit of St. Louis (formerly Gateway Motorsports · Majors May 2016MM2016Pueblo Motorsports Park · Majors May 2016MM2016Mid-Ohio Sports Car Course · @Mid Ohio Sports Car Course 2016@OSCC2016Michelin Raceway Road Atlanta · SARRC 2020S2020Pueblo Motorsports Park · Colorado Home Heroes Grand Prix 2026CHHGP2026Roebling Road · Southeast SARRC 2026SS2026High Plains Raceway · Colorado Freedom Sprints 2026CFS2026High Plains Raceway · Last Chance 2026LC2026
CFSMSESSMBSpecsolid race · dashed qualifying · each class's best lap as a share of CF's at the same event (the reference class, changeable above); 100% is level, less is quicker, so up the chart is quicker
EventCFSMSESSMBSpec
Qual best Race best Trap Qual best Race best Trap vs CF % of CF Qual best Race best Trap vs CF % of CF Qual best Race best Trap vs CF % of CF 
High Plains Raceway Last Chance 2026results only2026-08-221:54.780Levi Zeidlhack · fastest of 2-2.541s (-2.17%)
No rule changes on record between these events
High Plains Raceway Colorado Freedom Sprints 2026results only2026-07-041:57.321Levi Zeidlhack · fastest of 2
No rule changes on record between these events
Roebling Road Southeast SARRC 2026results only2026-06-271:26.210W. L. Manofsky · only car
No rule changes on record between these events
Pueblo Motorsports Park Colorado Home Heroes Grand Prix 2026results only2026-05-231:37.686Levi Zeidlhack · fastest of 3 · top 3 within 7.2s+0.280s (+0.29%)
No rule changes on record between these events
Michelin Raceway Road Atlanta SARRC 20202020-07-251:47.184Frederick Baker · fastest of 4 · top 4 within 4.9s1:48.433Frederick Baker · fastest of 4 · top 4 within 6.3s107.4Ken Steagall
No rule changes on record between these events
Mid-Ohio Sports Car Course @Mid Ohio Sports Car Course 20162016-06-031:48.451John Heinricy · fastest of 8 · top 5 within 1.1s1:45.784Ted Sahley · fastest of 9 · top 5 within 3.1s
No rule changes on record between these events
Pueblo Motorsports Park Majors May 20162016-05-281:37.406David Loken · fastest of 10 · top 5 within 2.2s
No rule changes on record between these events
Circuit of St. Louis (formerly Gateway Motorsports Majors May 20162016-05-141:16.860David Daughtery · fastest of 2
No rule changes on record between these events
Summit Point Raceway Majors Apr 20162016-04-291:31.569Alan Olson · fastest of 26 · top 5 within 1.9s1:29.237Kevin Kopp · fastest of 27 · top 5 within 0.3s
No rule changes on record between these events
Virginia International Raceway Majors Apr 20162016-04-152:27.873Felix Borodaty · fastest of 3 · top 3 within 6.6s2:28.161Felix Borodaty · fastest of 3 · top 3 within 8.0s

By track

TrackEvents Typical % of CF Best Latest 
High Plains Raceway2100.0%100.0%Colorado Freedom Sprints 2026100.0%Last Chance 2026
Pueblo Motorsports Park2100.0%100.0%Majors May 2016100.0%Colorado Home Heroes Grand Prix 2026
Circuit of St. Louis (formerly Gateway Motorsports10 of 1 with CF
Michelin Raceway Road Atlanta10 of 1 with CF
Mid-Ohio Sports Car Course10 of 1 with CF
Roebling Road1100.0%100.0%Southeast SARRC 2026100.0%Southeast SARRC 2026
Summit Point Raceway10 of 1 with CF
Virginia International Raceway10 of 1 with CF
About this data
Every event the class ran, at any track, oldest to newest on the chart and newest first in the table. Each point is the class's best lap as a share of CF's best on the same day: the weather and the day cancel out, so one figure compares across years where lap times cannot; a class that suits one track more than another still reads differently there. It still moves when the yardstick's own balance changes or its field thins, and an event the yardstick did not run has no point. A best from fewer than three cars is greyed. The rule changes that took effect between two events are folded between their rows.