BoP Lab / Classes / GT1
GT1 pace at every track
Lap times across years say as much about the weather as the class. % of the field is each class's best lap as a share of the field's on the same day (every class that ran that day but the ones shown, each scaled by its usual pace against SM and averaged, with each shown class's own track character taken out, so one figure reads the same across years and tracks), 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.
Closest to the field: GT1 78.4% of the field Tony Ave, Virginia International Raceway Runoffs 2019 qualifying
| Event | GT1 | |||||
|---|---|---|---|---|---|---|
| Qual best | Race best | Trap | % of the field | |||
| Road America Runoffs 20262026-09-28 | 2:02.981Tony Ave · fastest of 12 · top 5 within 4.6s+1.708s (+1.41%) | 2:04.611Tony Ave · fastest of 12 · top 5 within 3.9s+0.553s (+0.45%) | 177.9Tony Ave-2.7 mph (-1.5%) | 80.9%qual 79.9% | ||
9 rule changes (GT1: 9)4 weight · 2 cars added · 1 removed · 2 othershow
| ||||||
| Road America Runoffs 20252025-09-29 | 2:01.273Tony Ave · fastest of 14 · top 5 within 7.7s-1.262s (-1.03%) | 2:04.058Tony Ave · fastest of 12 · top 5 within 5.8s-2.835s (-2.23%) | 180.6Dave Ruehlow-0.4 mph (-0.2%) | 80.2%qual 79.0% | ||
7 rule changes (GT1: 7)2 cars added · 2 engine · 1 aero · 1 induction · 1 weightshow
| ||||||
| Road America Runoffs 20242024-10-01 | 2:02.535Dave Ruehlow · fastest of 10 · top 5 within 4.6s-0.401s (-0.33%) | 2:06.893Dave Ruehlow · fastest of 6 · top 5 within 50.8s+1.611s (+1.29%) | 181.0Dave Ruehlow+0.5 mph (+0.3%) | 82.7%qual 80.2% | ||
8 rule changes (GT1: 8)3 engine · 2 weight · 1 aero · 1 cars added · 1 othershow
| ||||||
| Virginia International Raceway Runoffs 20232023-09-23 | 1:48.203David Pintaric · fastest of 5 · top 5 within 22.4s+1.395s (+1.31%) | 178.1David Pintaric-3.6 mph (-2.0%) | 81.5% qual | |||
7 rule changes (GT1: 7)3 weight · 2 cars added · 1 induction · 1 othershow
| ||||||
| Virginia International Raceway Runoffs 20222022-09-24 | 1:46.808David Pintaric · fastest of 8 · top 5 within 3.7s+2.951s (+2.84%) | 2:18.094David Pintaric · fastest of 7 · top 5 within 13.7s+29.532s (+27.20%) | 181.7Adam Romito-1.5 mph (-0.8%) | 93.6%qual 80.8% | ||
6 rule changes (GT1: 6)2 cars added · 2 tyres & wheels · 1 suspension & brakes · 1 weightshow | ||||||
| Indianapolis Motor Speedway Runoffs 20212021-09-25 | 1:35.279Michael Lewis · fastest of 20 · top 5 within 0.6s-0.729s (-0.76%) | 1:53.220David Pintaric · fastest of 14 · top 5 within 3.8s+17.033s (+17.71%) | 180.2Tom Smith | 94.0%qual 81.2% | ||
1 rule change (GT1: 1)1 wordingshow
| ||||||
| Road America Runoffs 20202020-10-02 | 2:02.936Ernie Francis Jr · fastest of 16 · top 5 within 3.4s | 2:05.282Ernie Francis Jr · fastest of 16 · top 5 within 3.4s | 180.5Simon Gregg | 80.6%qual 79.8% | ||
12 rule changes (GT1: 12)4 aero · 2 cars added · 2 weight · 1 engine · 1 induction · 2 othershow
| ||||||
| Virginia International Raceway Runoffs 20192019-10-05 | 1:43.857Tony Ave · fastest of 12 · top 5 within 3.9s | 1:48.562Tony Ave · fastest of 11 · top 5 within 11.4s | 183.2Tony Ave | 79.9%qual 78.4% | ||
6 rule changes (GT1: 6)3 cars added · 1 aero · 1 engine · 1 suspension & brakesshow
| ||||||
| Sonoma Raceway Runoffs 20182018-10-10 | 1:35.673Michael Lewis · fastest of 8 · top 5 within 7.1s | 1:37.516Michael Lewis · fastest of 7 · top 5 within 5.3s | 111.6Preston Calvert | 82.2%qual 83.8% | ||
| No rule changes on record between these events | ||||||
| Indianapolis Motor Speedway Runoffs 20172017-09-25 | 1:36.008David Pintaric · fastest of 17 · top 5 within 2.2s | 1:36.187Cliff Ebben · fastest of 16 · top 5 within 1.5s | 81.2%qual 81.7% | |||
| No rule changes on record between these events | ||||||
| Mid-Ohio Sports Car Course Runoffs 20162016-09-19 | 1:21.927Cliff Ebben · fastest of 8 · top 5 within 2.5s | 1:22.866Michael Lewis · fastest of 7 · top 5 within 2.1s | 80.3%qual 80.4% | |||
| No rule changes on record between these events | ||||||
| Daytona International Speedway Runoffs 20152015-09-21 | 1:44.244Michael Lewis · fastest of 11 · top 5 within 7.8s | 1:47.116Michael Lewis · fastest of 7 · top 5 within 8.3s | 80.2%qual 78.7% | |||
By track
| Track | Events | Typical % of the field | Best | Latest |
|---|---|---|---|---|
| Road America | 4 | 80.6% | 80.2%Runoffs 2025 | 80.9%Runoffs 2026 |
| Virginia International Raceway | 3 | 81.5% | 79.9%Runoffs 2019 | 81.5%Runoffs 2023 |
| Indianapolis Motor Speedway | 2 | 81.2% | 81.2%Runoffs 2017 | 94.0%Runoffs 2021 |
| Daytona International Speedway | 1 | 80.2% | 80.2%Runoffs 2015 | 80.2%Runoffs 2015 |
| Mid-Ohio Sports Car Course | 1 | 80.3% | 80.3%Runoffs 2016 | 80.3%Runoffs 2016 |
| Sonoma Raceway | 1 | 82.2% | 82.2%Runoffs 2018 | 82.2%Runoffs 2018 |
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 field's best on the same day (every class that ran that day but the ones shown, each scaled by its usual pace against SM and averaged, with each shown class's own track character taken out, so one figure reads the same across years and tracks): the weather and the day cancel out, so one figure compares across years where lap times cannot, and across tracks too, since the class's own character at each track is taken out. A track with only one or two events on record is corrected less, since there is less to go on. A best from fewer than three cars is greyed. The rule changes that took effect between two events are folded between their rows.