2
bart
1:25.545
Porsche 911 Carrera 2$ #482
+0.844s
Jul 28, 2024
Racetracks · Leaderboard
Grattan Raceway lap times
All-time lap times and live track day data in Belding, Michigan
Track Record
1:24.701
marek
3Drivers
1.4142086Miles
Track map
Reference line preview
1
marek
1:24.701
Porsche GT4 RS (2025) #7
Jul 28, 2024
3
jonathan
1:28.542
Porsche GT4 #43
+3.841s
Jul 28, 2024
All-time fastest laps
3 drivers
PosDriverCarLap TimeGap
1
marek
Porsche GT4 RS (2025) #7
1:24.701
-
2
bart
Porsche 911 Carrera 2$ #482
1:25.545
+0.844s
3
jonathan
Porsche GT4 #43
1:28.542
+3.841s
About Grattan Raceway
1.414-mile technical west Michigan club circuit
- 1.4142086 mi
- 13 turns
- Opened 1962
- Belding, Michigan
Grattan Raceway is a 1.414-mile, 13-turn circuit near Belding, Michigan. Opened in 1962, it is known for blind crests, camber, and sustained amateur road-racing use.
The 1.4142086-mile, 13 turns layout rewards smooth inputs and track knowledge, a lap that improves once you learn the braking markers and apexes.
Grattan Raceway is on the North American track-day calendar. Record laps in the LapsHub app with phone GPS or RaceBox telemetry. Times upload automatically so you can chase a public leaderboard.
Notable features
- Blind crests: Several corners over blind rises, a technical Michigan lap.
- Off-camber corners: Camber changes punish imprecise lines.
- Club racing focus: A SCCA and Midwestern Council staple since 1962.
Live at Grattan Raceway
Live telemetry and video from the circuit
When drivers are on track at Grattan Raceway, LapsHub sends live lap times, GPS traces, and session data to the paddock feed. A low-latency live telemetry stream sends lap times, GPS, and session data to the paddock feed and the cloud while you drive. Live video feeds during track days and events let paddock crews and fans follow the action from the circuit or from anywhere.
- Live timing map shows who is on track, current lap times, and speeds as they happen
- Live video during track days and events, follow the action from the paddock or from home
- Phone GPS and RaceBox sessions both stream through the same live-event feed
FAQ
Grattan Raceway lap timing FAQ
Can I time laps at Grattan Raceway with my phone?
Yes. Download LapsHub free, pick Phone GPS, and time at Grattan Raceway. Keep your crew live and review history after you park.
Is LapsHub free for Grattan Raceway?
Yes. Phone GPS lap timing, crew live views, and coaching tools do not require a paid plan.
Where is Grattan Raceway?
Grattan Raceway is listed in the LapsHub catalog for Belding, Michigan. Track length: 1.4142086 mi.
Do phone laps appear on the public leaderboard?
Phone sessions are for live-event views and your history. Public boards show approved rank-eligible laps. Download free either way.
Free lap timer
Time your next day at Grattan Raceway free
Current public record: 1:24.701 by marek
Download LapsHub free. Time with phone GPS for your history and live crew feed. Pair a RaceBox when you want sharper GPS. Public boards show approved rank-eligible laps.