Sun, Apr 18, 2027

Horsetooth Half Marathon

Fort Collins, CO

Registration openAnnual since at least 2015

Half Marathon

Entry is $75 now and rises to $85 after Aug 1, 2026, so registering before then saves $10.

About the Horsetooth Half Marathon

The course runs point to point from the old stadium grounds on the west side of Fort Collins down to New Belgium Brewery. The middle stretch along Horsetooth Reservoir is where the race earns its reputation: rolling, exposed hills above the water that will test your legs. After that, the route drops onto a river recreation trail and the last stretch is genuinely downhill.

The finish is at a brewery, so there is a real post-race scene waiting. The start area is at the site of the former CSU football stadium, which gives you a clear landmark to aim for on race morning.

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Finish-Time Stats

Going by the 2026 results, this is a big field, and the spread of finish times is wide, so this is a mostly recreational race rather than one for club runners.

13.1 Miles · 2026 results

1,908finishers

1:06:32winner

2:10:45median

3:50:16cutoff

Top 3: Braden Nicholson (1:06:32) · Andy Wacker (1:07:06) · Brent Musselman (1:08:58)

The Horsetooth Half Marathon has been held every year since at least 2015. That is as far back as RunSignup's records for this race go, so it may well be older.

Where Would You Finish?

Enter a finish time to see where it lands against the most recent 13.1 Miles results.

Median

See how your time stacks up nationally →

How we calculate these stats: RunSesh calculates these figures from the most recent published results of past editions, sourced from RunSignup. We show aggregates only: field size, winning and median times, and the cutoff. We never publish individual finisher tables. Last updated Jul 27, 2026.

Distances & Start Times

13.1 Miles4/18/2027 08:00$75

Going for a Time?

Set a goal and get a pace band: every mile split on a card sized for your phone lock screen, so race morning needs no math.

Plan Your Trip

Where to Stay

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Common Questions About the Horsetooth Half Marathon

Will I finish last at the Horsetooth Half Marathon?

Almost certainly not. Half the 13.1 Miles field finished slower than 2:10:45, and the last recorded finisher came in around 3:50:16, so there is a long tail of runners behind the middle of the pack. Most fields are far slower than people expect.

Is the Horsetooth Half Marathon a good first 13.1 Miles?

With 1,908 finishers there are runners at every pace, so you are never out on your own. There is no qualifying time, and the finish-time spread above shows how varied the field really is. If it is your first 13.1 Miles, that spread matters more than the winner's time.

How competitive is the Horsetooth Half Marathon?

The 13.1 Miles winner ran 1:06:32 while the median finisher took 2:10:45. That spread points to a broad, mostly recreational field rather than a race dominated by club runners.