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CTC vs SRF 3 vs SM pace at every track

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AS+B-Spec+CTC×EP+F600+FA+FC+FE2+FF+FP+FV+FX+GT1+GT2+GTX+HP+P+P2+vsSM×SMX+vsSRF 3×SRF3+STL+STU+T1+T2+T3+T4+Show 180 inactive classes
Series
Reference · what % is measured against, 12 events
Tracks · untick to narrow
1:402:002:202:404 rule changes between Runoffs 2018 and Runoffs 20194 ▾2 rule changes between Runoffs 2019 and Runoffs 20202 ▾1 rule change between Runoffs 2020 and Runoffs 20211 ▾1 rule change between Runoffs 2021 and Runoffs 20221 ▾1 rule change between Runoffs 2022 and Runoffs 20231 ▾4 rule changes between Runoffs 2023 and Runoffs 20244 ▾4 rule changes between Runoffs 2024 and Runoffs 20254 ▾2 rule changes between Runoffs 2025 and Runoffs 20262 ▾SM race best at Runoffs 2015: 2:24.067 (Todd Lamb)SM race best at Runoffs 2016: 1:40.764 (Michael Carter)SM race best at Runoffs 2017: 1:59.100 (Michael Gagliardo)SM race best at Runoffs 2018: 1:55.278 (Michael Carter)SM race best at Runoffs 2019: 2:16.459 (Elivan Goulart)SM race best at Runoffs 2020: 2:43.748 (Preston Pardus)SM race best at Runoffs 2021: 1:58.837 (Brian Henderson)SM race best at Runoffs 2022: 2:19.107 (Travis Wiley)SM race best at Runoffs 2023: 2:16.229 (Julian DaCosta)SM race best at Runoffs 2024: 2:41.486 (Brett Kowalski)SM race best at Runoffs 2025: 2:44.430 (Kyle Greenhill)SM race best at Runoffs 2026: 2:42.725 (Francisco Barroso)SM qualifying best at Runoffs 2015: 2:18.661 (Andrew Carbonell)SM qualifying best at Runoffs 2016: 1:40.514 (Justin Hille)SM qualifying best at Runoffs 2017: 1:58.306 (Chris Haldeman)SM qualifying best at Runoffs 2018: 1:54.355 (Ken Sutherland)SM qualifying best at Runoffs 2019: 2:14.552 (Todd Buras)SM qualifying best at Runoffs 2020: 2:42.209 (Kyle Greenhill)SM qualifying best at Runoffs 2021: 1:57.695 (Brian Henderson)SM qualifying best at Runoffs 2022: 2:14.664 (Danny Steyn)SM qualifying best at Runoffs 2023: 2:14.986 (Danny Steyn)SM qualifying best at Runoffs 2024: 2:41.106 (Ethan Goulart)SM qualifying best at Runoffs 2025: 2:43.111 (Bobby Gossett)SM qualifying best at Runoffs 2026: 2:42.173 (Brett Kowalski)Daytona International Speedway · Runoffs 2015R2015Mid-Ohio Sports Car Course · Runoffs 2016R2016Indianapolis Motor Speedway · Runoffs 2017R2017Sonoma Raceway · Runoffs 2018R2018Virginia International Raceway · Runoffs 2019R2019Road America · Runoffs 2020R2020Indianapolis Motor Speedway · Runoffs 2021R2021Virginia International Raceway · Runoffs 2022R2022Virginia International Raceway · Runoffs 2023R2023Road America · Runoffs 2024R2024Road America · Runoffs 2025R2025Road America · Runoffs 2026R2026
CTCSRF 3SMsolid race · dashed qualifying · slower is lower
EventCTCSRF 3SM
Qual best Race best Trap Qual best Race best Trap vs CTC Qual best Race best Trap vs CTC 
Road America Runoffs 20262026-09-282:42.173Brett Kowalski · fastest of 34 · top 5 within 0.3s-0.938s (-0.58%)2:42.725Francisco Barroso · fastest of 35 · top 5 within 0.2s-1.705s (-1.04%)119.6Wyatt Couch+0.3 mph (+0.3%)
2 rule changes (SM: 2)1 wording · 1 othershowhide
  • SM Rear Toe Link #40271other
  • SM Part Number Change Request #39914wording
Road America Runoffs 20252025-09-292:43.111Bobby Gossett · fastest of 32 · top 5 within 0.3s+2.005s (+1.24%)2:44.430Kyle Greenhill · fastest of 28 · top 5 within 0.3s+2.944s (+1.82%)119.3Francisco Barroso-0.6 mph (-0.5%)
4 rule changes (SM: 4)1 tyres & wheels · 1 wording · 2 othershowhide
  • SM SMX Data Submission - Penalties #38248other
  • SM SMX Penaly Clarification updated language #38337wording
  • SM Clarify Tire Marking Regs #38005tyres & wheels
  • SM E&O SMX Regs 9.1.7.1.D.5.u-.w #37070other
Road America Runoffs 20242024-10-012:41.106Ethan Goulart · fastest of 49 · top 5 within 0.5s-1.103s (-0.68%)2:41.486Brett Kowalski · fastest of 43 · top 5 within 0.3s-2.262s (-1.38%)119.9Alex Bertagnoli-1.4 mph (-1.2%)
4 rule changes (SM: 4)1 engine · 1 suspension & brakes · 1 wording · 1 othershowhide
  • SM SMX Camera Rule Correction #36496wording
  • SM AIM ECU Protocol #36556engine
  • SM OE versus OEM Definitons #36608other
  • SM Shifter Bushing #36611suspension & brakes
Virginia International Raceway Runoffs 20232023-09-232:14.986Danny Steyn · fastest of 52 · top 5 within 0.1s+0.322s (+0.24%)2:16.229Julian DaCosta · fastest of 46 · top 5 within 0.3s-2.878s (-2.07%)120.3Jim Drago+1.1 mph (+0.9%)
1 rule change (SM: 1)1 weightshowhide
  • SM BOP for NB1 and NB2 #32309weight
Virginia International Raceway Runoffs 20222022-09-242:14.664Danny Steyn · fastest of 60 · top 5 within 0.2s+0.112s (+0.08%)2:19.107Travis Wiley · fastest of 58 · top 5 within 0.9s+2.648s (+1.94%)119.2Jonathan Neudorf-0.6 mph (-0.5%)
1 rule change (SM: 1)1 suspension & brakesshowhide
  • SM Update GCR Section 9.1.7.3.A.1. #32217suspension & brakes
Indianapolis Motor Speedway Runoffs 20212021-09-251:57.695Brian Henderson · fastest of 90 · top 5 within 0.5s-0.611s (-0.52%)1:58.837Brian Henderson · fastest of 88 · top 5 within 0.3s-0.263s (-0.22%)119.8Kyle Greenhill
1 rule change (SM: 1)1 othershowhide
  • SM Updates - Obsolete Parts & BOP Parts #30438other
Road America Runoffs 20202020-10-022:42.209Kyle Greenhill · fastest of 77 · top 5 within 0.5s2:43.748Preston Pardus · fastest of 75 · top 5 within 1.0s121.3Kyle Greenhill
2 rule changes (SM: 2)1 engine · 1 suspension & brakesshowhide
  • SM Radiator E&O Clarifications #29294engine
  • SM Modifications to prevent failures of Rear Brake Caliper Pin #28953suspension & brakes
Virginia International Raceway Runoffs 20192019-10-052:14.552Todd Buras · fastest of 60 · top 5 within 0.2s2:16.459Elivan Goulart · fastest of 56 · top 5 within 0.4s119.8Jim Drago
4 rule changes (SM: 4)1 engine · 1 tyres & wheels · 1 weight · 1 wordingshowhide
  • SM Request to allow aftermarket fuel filters. #26370wording
  • SM Request 99-00 replacement Wire harnesses #25602engine
  • SM Organize and Clarify 9.1.7.C.1.o. #25913weight
  • SM Strike Tire Tread Language #26123tyres & wheels
Sonoma Raceway Runoffs 20182018-10-101:54.355Ken Sutherland · fastest of 48 · top 5 within 0.7s1:55.278Michael Carter · fastest of 48 · top 5 within 0.3s102.2Danny Steyn
No rule changes on record between these events
Indianapolis Motor Speedway Runoffs 20172017-09-251:58.306Chris Haldeman · fastest of 86 · top 5 within 0.5s1:59.100Michael Gagliardo · fastest of 83 · top 5 within 0.6s
No rule changes on record between these events
Mid-Ohio Sports Car Course Runoffs 20162016-09-191:40.514Justin Hille · fastest of 45 · top 5 within 0.3s1:40.764Michael Carter · fastest of 44 · top 5 within 0.3s
No rule changes on record between these events
Daytona International Speedway Runoffs 20152015-09-212:18.661Andrew Carbonell · fastest of 62 · top 5 within 0.6s2:24.067Todd Lamb · fastest of 59 · top 5 within 0.8s

By track

TrackEvents 
Road America4
Virginia International Raceway3
Indianapolis Motor Speedway2
Daytona International Speedway1
Mid-Ohio Sports Car Course1
Sonoma Raceway1
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 the reference class'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.