Negative Split Running

Race Timing and Events We also offer overall standings and per division breakdown based on your requirements.

We provide Race Timing for trail and street running events, including marathon and ultra marathon distances with real time live web results (http://negativesplit.io). Results are accurate and instant using the latest in RFID technology. We also bring you Boundiful Endurance Runs, Old Goat Races, Sisyphus Ultra Challenge (Backyard Ultra), and Gnarly Events online registration.

05/17/2026

Bishop HS Ultras 2026. Always a hoot! Always a gorgeous view!

05/09/2026

John Wayne Grit Series continues into 2026 at Newport Coast; over 700 runners!

04/18/2026

Sasquatch sighting!

04/18/2026

NATRO 26

04/18/2026

Run4Kids 26

04/12/2026

Happy Hamster Day!
It's also the last day to get your cheapest entry into the 10th Annual Boundiful Endurance Runs!

Sign up!

https://negativesplit.io/boundiful

04/11/2026

It's b***o racing time in Ridgecrest!

04/04/2026

Join us for the 10th Annual Boundiful over Thanksgiving weekend. Take advantage of our early bird pricing, available until next Sunday, World Hamster Day.

Sign up today!

Negative Split Running