Home

Registratio for the 100 Miles Challenge 2020 (Virtual Edition) is open till 11 Oct 2020
Click HERE for details


Congratulations to all Nuts of Craze Ultra 2019
Click HERE to view Results / E-Cert


CRAZE ULTRA 2021 (9th edition)
Date: 9 Oct - 10 Oct 2021 (To Be Confirmed)
Start: From 7am Saturday 9 Oct 2021
Finish: By 7am Sunday 10 Oct 2021
Time Limit: up to 24hrs (cutoff by 7am on Sunday)
Venue: MacRitchie Reservoir, Singapore
Distances: 100km/72km/55km/45km/Mini Nuts 27km




The 100km of the Craze Ultra 2021 is a  qualifying race for the 2022 Western States 100 Miles Endurance Run (only 100km finishers under 22 hours will qualify)