Horsetooth Reservoir

Bouldering in Horsetooth Reservoir

Horsetooth Reservoir is one of Colorado’s most iconic bouldering destinations, offering high-quality granite problems with a mix of technical face climbing, powerful overhangs, and delicate slabs. Located just west of Fort Collins in the foothills of the Front Range, it provides a scenic and easily accessible escape for climbers of all levels. The rock features a friction-friendly texture attracting climbers year-round. Rotary Park is the most popular sector, housing a dense collection of problems from V0 to V13, while areas like Duncan’s Ridge and The 420s offer additional variety.

The best season for bouldering is spring and fall, from March to May and September to November, when temperatures are mild. Winter can provide crisp conditions for friction-dependent problems, but cold weather gear is necessary. Summer is possible but can be hot, with afternoon thunderstorms common in July and August. Access is straightforward, though a day-use fee is required at Rotary Park, and some areas require a Colorado Habitat Stamp.