Registration

Online registration for the 2026 UC Irvine Anti-Cancer Challenge is CLOSED.

Registration will be available on-site on Saturday, Oct. 10 at the registration tent, marked by giant yellow balloons in the festival starting at 6 a.m. on Challenge Day. It is recommended to come at least one hour prior to your ride/run/walk start time to avoid long lines.

For event day information, click here.