Quad Rock 25 Mile

Index card: facts and a plan, no score. RaceWorth scores only the fly-for-this catalog.

Fort Collins, Colorado, United States

Terrain around Lory State Park / Fort Collins. Not an official course map. OpenTopoMap / OSM / SRTM

Index card · facts and a plan

The card

Quad Rock 25 Mile shares its course with the 50 Mile race through Lory State Park and Horsetooth Mountain Park, splitting off to finish at Soldier Canyon, mile 24.9. Terrain is 85 percent singletrack and 15 percent dirt road, with about 5,500 feet of gain between 5,444 and 7,087 feet of elevation. Gnar Runners caps the 25 mile at 250 entries. The field sells out most years, with a wait list that turns over 75 to 80 spots across both distances. The only cutoff on course is Arthur's Trailhead, mile 17.5, at 2:30pm, 7.5 hours after the 7:00am start. Runners get 12.5 hours to finish. The race returns in May 2027; an exact date has not been posted.

Weekend

Official handbook facts

Start: 07:00
Crew: Unpublished, checked 2026-09-06
Drop bags: Unpublished, checked 2026-09-06
Pacer: Unpublished, checked 2026-09-06
Course file: Open

Printable cutoff card

Quad Rock 50 & 25 race page · retrieved 2026-09-06 (repo record)

Aid and cutoffs

2027 edition

Towers Road7.1 mi
Horsetooth Trailhead10.3 mi
Towers Road14.1 mi
Arthur's Trailhead17.5 mi · 7.5h cutoff
Timber (water only)21.8 mi
Soldier Canyon Finish24.9 mi · 12.5h cutoff

gnarrunners.comretrieved 2026-09-06 (repo record)

Field

Last editions · 25M scored distance

Field evidence: who showed up, who finished, how long. DNF is that evidence, not a difficulty score. Public results, scored distance only.

DNF over the years

DNF 7% in 2026, 5% the year before.

2026

243 rows, 19 not started, 209 finished, 15 dropped.

Starters: 224
Finishers: 209
DNF: 7%
Win: .
Median: .

2025

258 rows, 21 not started, 226 finished, 11 dropped.

Starters: 237
Finishers: 226
DNF: 5%
Win: .
Median: .

2024

259 rows, 18 not started, 227 finished, 14 dropped.

Starters: 241
Finishers: 227
DNF: 6%
Win: .
Median: .

Field evidence: who showed up, who finished, how long. DNF is that evidence, not a difficulty score. Public results, scored distance only.
Year	Starters	Finishers	DNF	Win	Median
2026243 rows, 19 not started, 209 finished, 15 dropped.retrieved 2026-09-06 (repo record)	224	209	7%	.	.
2025258 rows, 21 not started, 226 finished, 11 dropped.retrieved 2026-09-06 (repo record)	237	226	5%	.	.
2024259 rows, 18 not started, 227 finished, 14 dropped.retrieved 2026-09-06 (repo record)	241	227	6%	.	.

Overall field only. Not a pro or sponsored subset.

Climate

Typical May at the start area · historical race-week weather

Typical high: 62°F (17°C)
Typical low: 39°F (4°C)
Typical precip: 5.4 in (138 mm) / May
Days with rain: 64% of days
High point: 7,087 ft (2,160 m)

BewareMeasurable precip on about 64% of May days.

2015–2024 May means at the start / massif. · Open-Meteo ERA5 / climate · retrieved 2026-09-06