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Life & fun · January 20, 2025

RT

Race Timing with Integrated Replay

Instead of playing video and trying to display timing information next to it, how about we build a simulation based on timing data and become able to determine the state of the race at any given point in time based on the few 'radar blips' of sector loop passes we have? This is that. It takes the video and timing material of a 24h race (The IMSA Weathertech Sportscar Championship ROLEX24 at Daytona 2024) - 4 videos hosted on YouTube and a big CSV of laptimes and reimagines how a race replay might look like. It comes with a few non-standard visualizations, and a lot of possibilities for…

Race Timing with Integrated Replay launched on January 20, 2025 with 25 votes, #644 of 6,142 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 1 year on.

Visit storytiming.racing ↗Alternativestop 10% of January 2025

In plain words

Race Timing with Integrated Replay reconstructs a 24-hour motorsports race by combining video footage and lap timing data into an interactive simulation. Rather than syncing video with timing overlays, it uses sector pass data to determine car positions at any moment, allowing viewers to navigate the replay by race events like overtakes, pit stops, and flag changes. Built with Zig and Raylib, it demonstrates an alternative approach to broadcasting endurance racing.

written from the facts on this page · September 2026

From the sources

In the maker’s words, at launch

Instead of playing video and trying to display timing information next to it, how about we build a simulation based on timing data and become able to determine the state of the race at any given point in time based on the few 'radar blips' of sector loop passes we have? This is that. It takes the video and timing…

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