• Half Marathon
  • 21.1 km
  • Fort Collins
  • Event weekend starts
  • Past event

Horsetooth Half Marathon

This race edition

Race date
Date not confirmed for this distance
Race timezone
Timezone not confirmed
Edition status
Status not confirmed

Entry options

2026 edition

Entry options are not yet confirmed for this edition. Check the organiser before making plans.

Decision summary

Horsetooth Half Marathon at a glance

Cut-off average pace
11:23/km

4:00:00 total limit divided by distance. Check gun/chip timing and intermediate limits; allow time for stops.

Typical conditions
86/100

Historical race-date favourability, not a forecast

Evidence depth
49 verified facts

Source facts available

Route details

Known course facts at a glance

Methodology →

Horsetooth Half Marathon has known course details for its half marathon race. The summary below keeps the focus on what is confirmed for the course.

Official distance
21.1 km
Terrain
Trail, Road, Mixed
Scenery
Lakeside, Coastal, Mountain, Historic, Riverside, City

Quick answers

What runners ask first

How hilly is the Horsetooth Half Marathon?

The Horsetooth Half Marathon is described as net downhill. The course listing puts the climb at 280 m.

Where does the Horsetooth Half Marathon route go?

The Horsetooth Half Marathon route starts at Dixon Canyon Drive (CR 42C) near Maxwell Natural Area, at 5,195 feet elevation; 8:00 AM start and finishes at New Belgium Brewing in Old Town Fort Collins. Underfoot, expect mix of paved roads and recreational trail, including the Cache la Poudre recreational trail for the final descent. It passes Maxwell Natural Area, Horsetooth Reservoir, Monster Mountain, A Hill and North Dam Hill. Challenging but net-downhill point-to-point course that climbs to 'Monster Mountain' at mile 1.7 before running the eastern shoreline of Horsetooth Reservoir, tackling A Hill, North Dam Hill and Bingham Hill (mile 6.4), then descending the Cache la Poudre trail to finish at New Belgium Brewing.

What should runners know on race day for the Horsetooth Half Marathon?

5. Chip timing with split mats at mile 1.8 and mile 8.

Race character

Scenery

  • Lakeside
  • Coastal
  • Mountain
  • Historic
  • Riverside
  • City

Atmosphere

  • Scenic Tour
  • Festival
  • Competitive

Terrain

  • Trail
  • Road
  • Mixed
Elevation character
Net Downhill
Technicality
Moderate
Source-stated ascent
280 m
Net elevation
-72 m

Entry, logistics and records

Records and field

Men's course record
1:05:46 (Lawrence Kipkoech)
Women's course record
1:12:30 (Rachael Rudel)
Field size
Capped at 2,600 registrants.
Field cap
2,600

Entry requirements

Entry status
Past event: The listed edition date has passed.
Cut-off
Four-hour time limit to complete the course (8:00 AM start).
Qualification status
Not a Boston qualifier; open tiered registration with no qualifying standard.

Race day logistics

Aid stations
5
Expo / packet pickup
Packet pickup Saturday, April 18, 2026 Noon-6pm at Raintree Athletic Club, plus race-morning pickup 6:30-7:45am south of Maxwell Natural Area on Dixon Canyon Drive.
Medal
Finisher medal included with registration.
Finisher tee
High-quality sublimated Headsweats race tee shirt included with registration.

Access and course status

Start
Dixon Canyon Drive (CR 42C) near Maxwell Natural Area, at 5,195 feet elevation; 8:00 AM start.
Finish
New Belgium Brewing in Old Town Fort Collins.

Course facts

Course type
Point To Point
Surface
Mix of paved roads and recreational trail, including the Cache la Poudre recreational trail for the final descent.
Landmarks
Maxwell Natural Area, Horsetooth Reservoir, Monster Mountain, A Hill, North Dam Hill, Bingham Hill, Cache la Poudre recreational trail, New Belgium Brewing
Notable features
  • Race owned by the Fort Collins Running Club and managed by Gnar Runners
  • presented by Fort Collins Connexion
  • Entry includes a Horsetooth pint glass, a free beer from New Belgium Brewing, post-race food and vendor expo, and a bus shuttle back to the start
  • Challenging but net-downhill point-to-point course that climbs to 'Monster Mountain' at mile 1.7 before running the eastern shoreline of Horsetooth Reservoir, tackling A Hill, North Dam Hill and Bingham Hill (mile 6.4), then descending the Cache la Poudre trail to finish at New Belgium Brewing
  • Five aid stations at miles 2.8, 4.8, 8.5, 10.3 and 12.1
  • chip timing with split mats at mile 1.8 and mile 8

What are typical race-day conditions?

  • 8°CTypical temperature
  • 21 kphTypical wind
  • 2 mmTypical rainfall
  • 86Favourability /100
Typical conditions for the race date and locality, within the endurance-optimal window. These are climatological norms, not a forecast, and are shared across every distance at this event.