Live Timing
Real-time race data streamed from official timing feeds. Choose a discipline to watch live.
Formula 1
Live Available
F1 Live Timing
Full leaderboard with sector times, gaps, intervals, tire compounds, pit stops, and race control messages. Data from F1 SignalR + OpenF1 API.
Sector Times Tire Strategy Race Control Weather
NASCAR
Race Days
NASCAR Live Feed
Running positions, lap times, lead changes, pit stops, and flag status. Available during Cup Series, Xfinity, and Truck Series races.
Positions Pit Stops Flag Status Laps Led
Coming Soon
IndyCar MyLaps RIS integration for 2026 GPS positioning data
MotoGP Live timing via MotoGP Pulselive livetiming-lite endpoint
iRacing Live session tracking via iRacing Data API
Architecture
Data Sources
F1 SignalR OpenF1 REST NASCAR Feed Jolpica API MotoGP API WRC API iRacing API
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ARaceTool Server
State Management Deep Merge SSE Fan-out
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Browser Clients
EventSource React Components Real-time UI