Taking place on the trails and hills west of Fort Collins in Lory State Park and Horsetooth Mountain Park, the Quad Rock 25/50 will take you on a tour of the Fort Collins skyline, situated on the northeastern edges of Colorado’s mighty Rocky Mountains. The 25-mile loop will take you to the base of two of the more prominent granite outcroppings atop the West Ridge of the Fort Collins skyline by way of the Mill Creek drainage and the Spring Creek Valley. All told, you will ascend a touch over 5,500 vertical feet on more than 23 miles of premium, gnarled-out singletrack connected by two miles of dirt road. Run the second loop in reverse for a full 50 miles and a net vertical gain in excess of 11,000 feet.

Name Date and Time
Quad Rock 2024 (Quad Rock 50) Saturday, May 11, 2024 5:31AM (MDT) 181 entrants
Quad Rock 2023 (Quad Rock 50) Saturday, May 6, 2023 5:30AM (MDT) 191 entrants
Quad Rock 2022 (Quad Rock 50) Saturday, May 7, 2022 5:30AM (MDT) 169 entrants
Quad Rock 2021 (Quad Rock 50) Saturday, May 8, 2021 5:30AM (MDT) 223 entrants
Quad Rock 2020 (Quad Rock 50) Saturday, August 15, 2020 4:30AM (MDT) 101 entrants
Quad Rock (2019) (Quad Rock 50) Saturday, May 11, 2019 5:30AM (MDT) 207 entrants
Quad Rock (2018) (Quad Rock 50) Saturday, May 12, 2018 5:31AM (MDT) 215 entrants
Quad Rock 2017 Saturday, May 13, 2017 5:30AM (MDT) 193 entrants