The Four Seasons of Horsetooth (4SOH) Mountain Bike Challenge course follows some of the best trails along the Northern Colorado Front Range. It's a challenging 20+ miles with three, lung-busting climbs and a mix of technical and flowing descents.
The 4SOH Challenge is a four season stage race that takes place on the equinox/solstices. This free grassroots un-event begins each fall and encourages participants to ride the course each season.
The current leaderboard, rules, and additional information can be found at 4SOH.org
The course starts and ends in the Lory State Park Timber parking lot.
for turn-by-turn directions and other course resources.
4SOH began in 2014 and was conceived by the infamous Beet Juice.