2018 REGISTRATION IS NOW OPEN!

Join The Anti-Cancer Challenge to ride, run, or volunteer for a cancer-free world on May 19, 2018 at the Orange County Great Park. 

GET THE MOBILE APP

Downloading the app is free and easy.

  • Click here to download the iOS version.
  • Click here to download the Android version.
  • You can also go to the app store and search for the Anti-Cancer Challenge. 

SHERYL CROW CONCERT PHOTOS

Click here to check out photos from the Celebration Concert with Sheryl Crow. 

2017 CHALLENGE WEEKEND PHOTOS

Want to relive the excitement from the 2017 Challenge? Click here to check out the 2017 Challenge Weekend photos.