Weekly mountain bike races begin tonight – Thursday, June 30 – at Castlewood State Park as the Alpine Shop Short Track Dirt Crits kick off the 2011 season. This series of races, part of St. Louis's Off-Road Racing League, runs for five weeks and features three races each night. Mountain bike racers of all abilities are welcome! Choose your race based on your ability: A- Expert, B-Sport and C-Novice/beginners. Each category follows the same course. The difference is in how long the race lasts. The A racers lasts 45 minutes plus two laps. B race goes for 25 minutes plus two laps and the C race lasts 15 minutes plus two laps. At the time of posting, registrations were full for the 6/30 races; but spots were still available for the following races. If you're interested in participating, please click here for on-line registration. Following the races, all participants are invited to partake of some fantastic food from The Wolf Public House, including beverages from New Belgium Brewery. Alpine Shop has some drool-worthy prizes to give away all series long for both participants and spectators alike. Just stop by our tent to find out more. For more information on the series, please visit the Off-Road Racing League page. And if mountain bikes aren't really your thing, be sure to check out the Trail Run part of the Off-Road Racing League. That series begins Thursday, August 4 (or the week after the mountain bike races have finished)!