Central Ohio Ultra Cycling welcomes you to the 17th Calvin’s Challenge. While the ownership of the race has change, not much else has. The same great route, the same great weather and most importantly the same great racing that makes Calvin’s Challenge the premier 12 hour race on the UMCA calendar. The following list is things that you may or not need to know depending on the event you are signed up for. We seemed to keep finding things that we feel you need to know to make your race the best possible. While the 12 & 6 hour races are drafting legal, we praise the accomplishments of the individual racer. We encourage you to set a goal, train for it and do the best you can come race day. You will face many challenges, from weather( always perfect) mechanical, intestinal issues, and plain old fatigue. But no matter your final score, know that we are proud that you came and put forth your beast effort. Learn from your mistakes and come back next year stronger and better prepared. Chang...