Registration for the Naperville Marathon & Half Marathon has closed. If you are interested in joining DetermiNation, consider joining us for the Santa Hustle 5k or one of our 2015 events. Thanks for your support!
When you join the American Cancer Society DetermiNation endurance event program, you join our nationwide community of athletes and get the best localized support, training, and fundraising tools to help you achieve your personal victory. Every mile of training will be more meaningful and on race day you’ll have the extra motivation you need knowing you’re helping save lives from all types of cancer.
The DetermiNation program offers you the ultimate community of support, training and inspiration. Learn More
We applaud and appreciate the efforts of our DetermiNation program Alumni. Learn More
Training Tips from Coach Adam
What's the best running shoe?
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