Gear your cycling legs back into shape for an April ride through the picturesque hills and pines that line Castle Rock. Though scenic, this mountain bike race is no easy stroll. Racers can compete in a selection of courses that include marathon, half marathon, cross country, or half cross country categories. The top three finishers cash in with the marathon champion pulling in $300. The entry fee includes a post-race meal, official results and scoring, an aid station, and an athlete gift bag for the first 200 registrants. Sat 8 a.m.