Tucson, AZ. Celebrating 22 years of riding single track in the Sonoran Desert, the 24 Hours in the Old Pueblo presented by Tucson Medical Center is one of the largest 24-hour events in the world. With mid-day highs of 70 degrees, a massive bike expo, dedication dinner, late night entertainment, reasonably priced entry fees, and 24 hours of tunes provided by 91.3 KXCI Community Radio this festival is far more than just a 24-Hour mountain bike even