AsyncRacing

Race real people’s runs.

Your phone records your car’s pass. Then you race the runs other people recorded in cars like yours, with the weather taken out. Nobody has to be there at the same time: your launch on the tree is the live part.

Recorded in the app: Tonight’s next race, the tree, the pass, the slip.

How a race works

  1. Record your car.

    Put your phone in a mount and make a pass on a closed course: from a stop for 60 ft, 0–60, the eighth and the quarter, or rolling from 60 to 130. GPS and the phone’s motion sensors turn it into your car’s real speed curve.

  2. The weather comes out.

    Hot or cold, at the coast or up a mountain, every run is corrected to one standard day. Cars race cars, not the air they ran in.

  3. Race the next run.

    Tonight puts a real person’s run in a car like yours in front of you, with the light you need to beat it. Stage, wait for the green, go. They don’t need to be online.

Your car is in here.

Fifty cars, lit the way they look at the strip at night, from the Model 3 Performance to the N54 335i. Pick yours, record it once, and it races as itself. Not on the list? Type its name.

  • Tesla Model 3 PerformanceTeslaModel 3 Performance
  • Tesla Model S PlaidTeslaModel S Plaid
  • BMW 335i, N54BMW335i, N54
  • BMW 340i, B58BMW340i, B58
  • Toyota GR Supra 3.0ToyotaGR Supra 3.0
  • Ford Mustang GTFordMustang GT
  • Dodge Charger Scat PackDodgeCharger Scat Pack
  • Dodge Challenger HellcatDodgeChallenger Hellcat
  • Chevrolet Corvette C8ChevroletCorvette C8
  • Honda Civic Type RHondaCivic Type R

Four ways to race, any night

Runs
Everyone in your class with a recorded run. Race any of them, whenever you like.
Live
People online right now, and heats you can host or join.
Daily
Four starts against the same four rivals as everyone in your class today.
Ranked
The board for your class. Your best corrected time sets your place.

Built car that hooks at speed? Race rolls: lock in at 60, go on green, pull to 130. What’s a good 60–130?

Every race ends on a slip.

Reaction, 60 ft, the eighth and the quarter, side by side, with the air it was corrected to. Share it, and the link opens the run: anyone with the app can race it.

  • Only closed-course runs count. Public roads are never scored.
  • Every run’s numbers are worked out again on our server from what your phone recorded.
AsyncRacing, night 048, quarter mileOct 1, 2026
MarkYou@KIYO_86
Reaction.167.270
60 ft2.412.54
330 ft6.206.50
1/8 mile9.259.55
1/8 mph82.382.7
1000 ft11.8712.16
1/4 mile14.1014.38
1/4 mph101.8102.1

Win light: you, lane 1, by 0.379 s
Corrected to standard air. Recorded on a phone.

Your first race is waiting.

AsyncRacing is free on iPhone, in beta on TestFlight.

Get the beta