Road Atlanta
Braselton, Georgia · 4.15 km · 2.58 mi · clockwise
Road Atlanta in Braselton, Georgia is modeled here on the Motorcycle Circuit — the bike layout with the riders'-left Turn 3 chicane and the auxiliary Turn 12 that MotoAmerica, WERA and track-day organizers run: 4,150 m (2.58 mi) clockwise, 12 numbered turns. Turn 9 is a flat-out kink the reference line runs straight through. The simulated profile is fastest through the long uphill Turn 1, a 130 km/h (81 mph) minimum, and slowest in the Turn 3 chicane at 63 km/h (39 mph); Turn 5 climbs 7.7 m and Turn 12 drops 11.5 m. Simulated lap times run from 1:30.9 for the liter bike to 1:38.2 for the middleweight twin. Every figure on this page is a physics-simulation estimate computed from track geometry, not measured data.
All figures: physics-simulation estimates · generated 2026-10-02 · methodology & assumptions
Track outline © OpenStreetMap contributors (ODbL)
Road Atlanta — quick facts
Motorcycle track guide · simulation estimates · 2026-10-02
- Layout: Motorcycle Circuit, 4,150 m (2.58 mi), run clockwise
- 13 corner entries: turns 1–12 with 10A and 10B; one flat-out kink (Turn 9)
- Fastest simulated cornering minimum: Turn 1, 130 km/h (81 mph)
- Slowest simulated corner: Turn 3 Chicane, 63 km/h (39 mph)
- Biggest drop: Turn 12 — 11.5 m (38 ft) over 168 m; biggest climb: Turn 5 — 7.7 m (25 ft) over 84 m, with Turn 1 close behind at 7.6 m
- Longest simulated brake zone: 264 m into Turn 10B on the liter bike
- Simulated lap estimates: 1:30.9 (liter bike), 1:33.3 (supersport 600), 1:38.2 (middleweight twin); average 150–163 km/h (93–101 mph)
Turn 1
| Entry | Min | Exit | Brake start | Eff. radius | Elev Δ |
|---|---|---|---|---|---|
| 160 km/h99 mph | 130 km/h81 mph | 161 km/h100 mph | 102 m335 ft | 112 m368 ft | +7.6 m+25 ft |
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
Turn 2
| Entry | Min | Exit | Brake start | Eff. radius | Elev Δ |
|---|---|---|---|---|---|
| 92 km/h57 mph | 88 km/h54 mph | 85 km/h53 mph | 69 m226 ft | 96 m314 ft | -0.1 m-0 ft |
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
Turn 3 — Chicane
| Entry | Min | Exit | Brake start | Eff. radius | Elev Δ |
|---|---|---|---|---|---|
| 88 km/h54 mph | 63 km/h39 mph | 129 km/h80 mph | 72 m236 ft | 26 m86 ft | -5.3 m-17 ft |
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
Turn 4
| Entry | Min | Exit | Brake start | Eff. radius | Elev Δ |
|---|---|---|---|---|---|
| 130 km/h81 mph | 127 km/h79 mph | 149 km/h93 mph | 0 m0 ft | 106 m349 ft | -3.2 m-10 ft |
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
Turn 5
| Entry | Min | Exit | Brake start | Eff. radius | Elev Δ |
|---|---|---|---|---|---|
| 103 km/h64 mph | 84 km/h52 mph | 126 km/h78 mph | 27 m89 ft | 47 m153 ft | +7.7 m+25 ft |
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
Turn 6
| Entry | Min | Exit | Brake start | Eff. radius | Elev Δ |
|---|---|---|---|---|---|
| 132 km/h82 mph | 106 km/h66 mph | 126 km/h79 mph | 114 m374 ft | 75 m246 ft | +3.6 m+12 ft |
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
A 144 m right at a 74.9 m effective radius that rises 3.6 m. The approach is one of the longer braking events on the lap — 147 m on the liter bike, 114 m on the supersport-600, 78 m on the twin — converging to a 132 km/h (82 mph) entry and a 106 km/h (66 mph) minimum. The corner gives back less than it takes in the trace: exit is 126 km/h (79 mph) for the sport classes and 125 km/h (78 mph) for the twin, below the entry speed, because the tighter Turn 7 arrives before the drive can develop.
Turn 7
| Entry | Min | Exit | Brake start | Eff. radius | Elev Δ |
|---|---|---|---|---|---|
| 101 km/h63 mph | 69 km/h43 mph | 127 km/h79 mph | 27 m89 ft | 31 m103 ft | +0.5 m+2 ft |
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
Turn 8
| Entry | Min | Exit | Brake start | Eff. radius | Elev Δ |
|---|---|---|---|---|---|
| 124 km/h77 mph | 124 km/h77 mph | 127 km/h79 mph | 72 m236 ft | 241 m792 ft | +0.0 m+0 ft |
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
Turn 9
| Entry | Min | Exit | Brake start | Eff. radius | Elev Δ |
|---|---|---|---|---|---|
| 262 km/h163 mph | 262 km/h163 mph | 262 km/h163 mph | 0 m0 ft | 510 m1672 ft | +0.0 m+0 ft |
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
Turn 10A
| Entry | Min | Exit | Brake start | Eff. radius | Elev Δ |
|---|---|---|---|---|---|
| 114 km/h71 mph | 74 km/h46 mph | 90 km/h56 mph | 168 m551 ft | 36 m120 ft | +1.7 m+6 ft |
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
The first half of the 10A/10B chicane is a 63 m left at a 36.5 m effective radius, rising 1.7 m, and it absorbs the back-straight speed: the supersport-600 model starts braking 168 m before turn-in, the liter bike 189 m and the twin 123 m, all arriving at 114 km/h (71 mph) and reaching a 74 km/h (46 mph) minimum. The exit is only 90 km/h (56 mph) in every class, because the right-hand 10B follows immediately and the trace is already settling for it.
Turn 10B
| Entry | Min | Exit | Brake start | Eff. radius | Elev Δ |
|---|---|---|---|---|---|
| 104 km/h65 mph | 80 km/h50 mph | 128 km/h79 mph | 243 m797 ft | 43 m140 ft | +6.4 m+21 ft |
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
Turn 10B is the right-hand half of the chicane: 96 m at a 42.8 m effective radius, climbing 6.4 m. The brake-start distances recorded here are the longest in the data — 243 m on the supersport-600, 264 m on the liter bike, 198 m on the twin — which places the start of braking back before 10A. Entry is 104 km/h (65 mph) for the sport bikes and 103 km/h (64 mph) for the twin, the minimum 80 km/h (50 mph), and the uphill exit 128 km/h (79 mph) for the sport bikes against 123 km/h (77 mph) for the twin.
Turn 11
| Entry | Min | Exit | Brake start | Eff. radius | Elev Δ |
|---|---|---|---|---|---|
| 125 km/h78 mph | 125 km/h78 mph | 128 km/h79 mph | 90 m295 ft | 233 m766 ft | +0.2 m+1 ft |
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
Turn 12
| Entry | Min | Exit | Brake start | Eff. radius | Elev Δ |
|---|---|---|---|---|---|
| 125 km/h78 mph | 105 km/h65 mph | 152 km/h95 mph | 75 m246 ft | 72 m237 ft | -11.5 m-38 ft |
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed