Run/Bike ComboRun , Ride, then enjoy the party! Register 5 Mile Run @ 9:30am Run two laps on the 2.5mi mixed terrain running course. Then you’ll have time to recovery before… 32 mile Rolling Gravel Ride @ 12pm Ride the best 32 miles of Boulder County’s best rolling gravel roads. This course is the go-to ride for a great workout with killer views. Concert and river chillin’ After the race, chill out in the St. Vrain river post race, grab a beer, and enjoy the live bands!