BoP Lab / Classes / 1D
1D vs FE2 pace at every track
Lap times across years say as much about the weather as the class. % of 1D is each class's best lap as a share of 1D'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.
| Event | 1D | FE2 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Qual best | Race best | Trap | Qual best | Race best | Trap | vs 1D | % of 1D | |||
| Road America Runoffs 20262026-09-28 | 2:12.326Franklin Futrelle · fastest of 8 · top 5 within 1.9s-0.149s (-0.11%) | 2:11.881Franklin Futrelle · fastest of 8 · top 5 within 1.6s-1.458s (-1.09%) | 143.5Steve Whitston-5.5 mph (-3.7%) | |||||||
1 rule change (FE2: 1)1 othershow
| ||||||||||
| Road America Runoffs 20252025-09-29 | 2:12.475Franklin Futrelle · fastest of 11 · top 5 within 1.4s+0.969s (+0.74%) | 2:13.339Franklin Futrelle · fastest of 10 · top 5 within 0.6s+0.591s (+0.45%) | 149.0Steve Whitston+3.7 mph (+2.6%) | |||||||
1 rule change (FE2: 1)1 othershow
| ||||||||||
| Road America Runoffs 20242024-10-01 | 2:11.506Porter Aiken · fastest of 18 · top 5 within 0.5s-1.300s (-0.98%) | 2:12.748Porter Aiken · fastest of 17 · top 5 within 2.0s-0.523s (-0.39%) | 145.3Porter Aiken+1.9 mph (+1.3%) | |||||||
| No rule changes on record between these events | ||||||||||
| Virginia International Raceway Runoffs 20232023-09-23 | 1:50.665Charles Russell Turner · fastest of 26 · top 5 within 2.3s-0.188s (-0.17%) | 1:51.098Franklin Futrelle · fastest of 19 · top 5 within 1.4s-20.947s (-15.86%) | 141.3Franklin Futrelle-0.6 mph (-0.4%) | |||||||
| No rule changes on record between these events | ||||||||||
| Virginia International Raceway Runoffs 20222022-09-24 | 1:50.853Charles Russell Turner · fastest of 25 · top 5 within 1.1s-0.209s (-0.19%) | 2:12.045Jason Conzo · fastest of 22 · top 5 within 1.8s+19.891s (+17.74%) | 141.9Eric Cruz-0.6 mph (-0.5%) | |||||||
| No rule changes on record between these events | ||||||||||
| Indianapolis Motor Speedway Runoffs 20212021-09-25 | 1:36.395Max Grau · fastest of 28 · top 5 within 0.7s | 1:36.655Max Grau · fastest of 28 · top 5 within 0.7s | 146.2Gray Fowler | |||||||
| No rule changes on record between these events | ||||||||||
| Road America Runoffs 20202020-10-02 | 2:12.806Scott Rettich · fastest of 25 · top 5 within 0.6s | 2:13.271Owen McAllister · fastest of 23 · top 5 within 0.7s | 143.4Owen McAllister | |||||||
2 rule changes (FE2: 2)1 weight · 1 wordingshow | ||||||||||
| Virginia International Raceway Runoffs 20192019-10-05 | 1:51.062Liam Snyder · fastest of 20 · top 5 within 1.3s | 1:52.154Liam Snyder · fastest of 19 · top 5 within 0.7s | 142.6Robert Vanman | |||||||
| No rule changes on record between these events | ||||||||||
| Sonoma Raceway Runoffs 20182018-10-10 | 1:35.040Flinn Lazier · fastest of 9 · top 5 within 1.5s | 1:35.563Flinn Lazier · fastest of 9 · top 5 within 1.7s | 126.8Scott Rettich | |||||||
| No rule changes on record between these events | ||||||||||
| Daytona International Speedway Runoffs 20152015-09-21 | ||||||||||
By track
| Track | Events | Typical % of 1D | Best | Latest |
|---|---|---|---|---|
| Road America | 4 | 0 of 4 with 1D | ||
| Virginia International Raceway | 3 | 0 of 3 with 1D | ||
| Daytona International Speedway | 1 | 0 of 1 with 1D | ||
| Indianapolis Motor Speedway | 1 | 0 of 1 with 1D | ||
| Sonoma Raceway | 1 | 0 of 1 with 1D |
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 1D'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.