Napa to Sonoma Half Marathon

We're back again with our premier local event, the Napa to Sonoma Half Marathon. Train with Team Challenge throughout the spring and then experience a world-class event in the heart of California's wine country. Celebrate your accomplishments in style with the area's great wineries and restaurants. This event is already sold out, so don't miss out on an incredible opportunity to help find a cure for Crohn's and colitis AND participate in this exclusive event.