Quad Rock 50

Edition history
Bellvue, CO, USA
10 May, 2025 (Sat)
Event size: 100 - 999 participants

Trail running

25 mi, 50 mi

About the event

Welcome to the Quad Rock 50 and 25 mile trail races, an event put on by trail runners for trail runners.

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. Look east from the course’s high ridges and you’ll see the Great Plains extending into Nebraska as far as the eye can see. Look west and you’ll take in the layered ridgelines and summits of Northern Colorado’s Rocky Mountain swell, dominated 30 miles away by a towering Longs Peak, the undisputed monarch of Colorado’s northern Front Range.

We aspire to not only offer a first class trail racing experience on a challenging, scenic and impeccably marked course, but also a top-notch post-race experience that will leave your bellies full, your feet tapping and your mouths yapping.

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.

Hang around after your run for music, food, awesome awards, and some mighty tall tales.

Races offered by this event

You have 14 weeks to prepare

50 Mile

10 May, 2025 (Sat)
Trail running

50 mi

11000 m of elevation gain
11000 m of elevation drop
Detailed Course Directions
Start to Arthur’s Rock (East Valley) Trailhead:

Lory State Park Soldier Canyon Picnic AreaThe race will start at the gateway to the Soldier Canyon picnic area. Runners will follow the road out of the trailhead and head south on the Lodgepole Drive loop (where runner vehicles are parked) and will continue two miles down the main park road to the Arthur’s trailhead.

Arthur’s Rock Trailhead to Towers Aid Station:

Take the first left into the Arthur’s horse trailer parking lot and head straight onto the east side of the South Valley loop trail. Immediately after crossing the Horsetooth Mountain Park border, turn right onto the Nomad trail. At the next junction, take another right onto the Sawmill trail. A mile up the trail, take a left on Stout Trail and connect over to Towers Rd, where the course takes a right up the hill to the Towers aid station at the intersection of the Mill Creek and Spring Creek trails.

Towers Aid Station to Horsetooth Trailhead:
Horsetooth RockFrom the Towers Road aid station, turn left onto the Spring Creek trail. Take the Spring Creek Trail all the way down to a three-way intersection after about 1.7 miles, turning left at the intersection to stay on the Spring Creek Trail. Stay straight at the intersection with the Horsetooth Falls Trail after half a mile and follow it another mile to the Horsetooth Mountain Park Trailhead and race aid station.

Horsetooth Trailhead to Towers Aid Station:

Horsetooth Rock TrailFrom the Horsetooth Trailhead, take the Soderberg service road up to the Horsetooth Rock trail, and turn left, continuing on the hiking trail up to the Wathan/Westridge trail junction. Turn right off the Horsetooth Rock trail onto the Wathan trail and continue straight (stay left) onto the Westridge Trail and follow it north to Towers Road. Take a right on Towers and the aid station will be right around the corner.

Towers Aid Station to Arthur’s Rock Trailhead:

Mill Creek Link to Arthurs Rock TrailFrom the Towers aid station, take a left on the Mill Creek trail and follow it all the way back to the Arthur’s Trailhead in Lory State Park. Midway down Mill Creek, watch for a sharp left turn at the Loggers junction. Shortly after you enter Lory State Park, the Mill Creek trail will come to a T junction. Take the right onto the Mill Creek Link trail and follow that to the South Valley Trail, where you’ll make a quick left to the Arthur’s Rock trailhead.

Arthur’s Rock Trailhead to Soldier Canyon Start/Finish Area:

Start up the Arthur’s Rock trail and about 3/4 of a mile up, take a sharp left to connect to the Howard trail. Follow Howard all the way up and around the back side of Arthur’s Rock. Take a sharp left onto the Timber Trail behind the rock. The first part of Timber is a 4WD logging road. About 3/4 mile down the road, take the 90 degree right turn onto the Timber single track trail. Keep left past Well Gulch and follow Timber all the way to the Timber Trailhead on the valley floor. Exit the Timber trailhead and take the short connector trail back to the Soldier Canyon start/finish.

50 Mile Finish:

50 Milers will run the same 25 mile loop in reverse and from the last stop at the Arthur’s trailhead runners will stay on the East Valley trail all the way to the finish area at Soldier Canyon.
UTMB qualifier
Solo
On site
Trail
Extreme
Multiple loops
Timed
Mountain range

25 Mile

10 May, 2025 (Sat)
Trail running

25 mi

5500 m of elevation gain
5500 m of elevation drop
Detailed Course Directions
Start to Arthur’s Rock (East Valley) Trailhead:

Lory State Park Soldier Canyon Picnic AreaThe race will start at the gateway to the Soldier Canyon picnic area. Runners will follow the road out of the trailhead and head south on the Lodgepole Drive loop (where runner vehicles are parked) and will continue two miles down the main park road to the Arthur’s trailhead.

Arthur’s Rock Trailhead to Towers Aid Station:

Take the first left into the Arthur’s horse trailer parking lot and head straight onto the east side of the South Valley loop trail. Immediately after crossing the Horsetooth Mountain Park border, turn right onto the Nomad trail. At the next junction, take another right onto the Sawmill trail. A mile up the trail, take a left on Stout Trail and connect over to Towers Rd, where the course takes a right up the hill to the Towers aid station at the intersection of the Mill Creek and Spring Creek trails.

Towers Aid Station to Horsetooth Trailhead:
Horsetooth RockFrom the Towers Road aid station, turn left onto the Spring Creek trail. Take the Spring Creek Trail all the way down to a three-way intersection after about 1.7 miles, turning left at the intersection to stay on the Spring Creek Trail. Stay straight at the intersection with the Horsetooth Falls Trail after half a mile and follow it another mile to the Horsetooth Mountain Park Trailhead and race aid station.

Horsetooth Trailhead to Towers Aid Station:

Horsetooth Rock TrailFrom the Horsetooth Trailhead, take the Soderberg service road up to the Horsetooth Rock trail, and turn left, continuing on the hiking trail up to the Wathan/Westridge trail junction. Turn right off the Horsetooth Rock trail onto the Wathan trail and continue straight (stay left) onto the Westridge Trail and follow it north to Towers Road. Take a right on Towers and the aid station will be right around the corner.

Towers Aid Station to Arthur’s Rock Trailhead:

Mill Creek Link to Arthurs Rock TrailFrom the Towers aid station, take a left on the Mill Creek trail and follow it all the way back to the Arthur’s Trailhead in Lory State Park. Midway down Mill Creek, watch for a sharp left turn at the Loggers junction. Shortly after you enter Lory State Park, the Mill Creek trail will come to a T junction. Take the right onto the Mill Creek Link trail and follow that to the South Valley Trail, where you’ll make a quick left to the Arthur’s Rock trailhead.

Arthur’s Rock Trailhead to Soldier Canyon Start/Finish Area:

Start up the Arthur’s Rock trail and about 3/4 of a mile up, take a sharp left to connect to the Howard trail. Follow Howard all the way up and around the back side of Arthur’s Rock. Take a sharp left onto the Timber Trail behind the rock. The first part of Timber is a 4WD logging road. About 3/4 mile down the road, take the 90 degree right turn onto the Timber single track trail. Keep left past Well Gulch and follow Timber all the way to the Timber Trailhead on the valley floor. Exit the Timber trailhead and take the short connector trail back to the Soldier Canyon start/finish.
UTMB qualifier
Solo
On site
Trail
Extreme
Multiple loops
Timed
Mountain range

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