The 2026 Colorado Fall Equinox Marathon has concluded.Share your finish

Colorado Fall Equinox Marathon

Race complete
Fort Collins, CO, USA · September 20, 2026·
partly-cloudy-day56°·63° high·Light·Dry
7
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Colorado Fall Equinox Marathon race day weather

partly-cloudy-day
56°at start
73° high
Breezy
Dry
Your goal
0:00:00

Comfortable conditions, adjust pace wisely

Runners will face temperatures starting at 56°F and rising to 63°F by race end, with humidity at 70%. A light northeast wind will create a headwind for several segments, particularly between miles 1 and 12, and again from 17 to 27. Runners should start conservatively to manage the rolling terrain and adjust their pace as needed, especially during the climbs and while navigating the headwinds.

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Pace Calculator

26.2mi
0:00:00
HH:MM:SS
Pace
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Enter a finish time to see what race day does to it.

Common Goals:

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Colorado Fall Equinox Marathon route and elevation

The Colorado Fall Equinox Marathon course has about 1,562 ft (476 m) of climbing and 2,689 ft (820 m) of descent, a net drop of about 1,127 ft (344 m). It is hillier than 76% of the marathon courses racecast.io has mapped, measured by what the hills cost in time. The hardest mile is mile 2, with 256 ft (78 m) of climbing and a 4.5% average grade.

Biggest climbs

  • Miles 0.5 to 2.7: climbs about 500 ft (152 m).
  • Miles 2.8 to 3.9: climbs about 295 ft (90 m).
  • Miles 4.1 to 5.2: climbs about 295 ft (90 m).

What the hills cost

  • 3:30 on a flat course is about 3:32 here (2 minutes slower).
  • 4:00 on a flat course is about 4:02 here (2 minutes slower).
  • 4:30 on a flat course is about 4:32 here (2 minutes slower).

Hills only, priced mile by mile on the course map. The pace calculator above adds the race-day weather.

Even-effort splits for a 3:30, 4:00 or 4:30 finish
The Colorado Fall Equinox Marathon mile splits at even effort for three finish times, with each mile's climb and descent
MileClimbDescent3:304:004:30
1112 ft54 ft8:259:3710:50
2256 ft17 ft10:0511:3112:57
3257 ft56 ft9:4311:0712:30
4237 ft38 ft9:4211:0512:28
5231 ft13 ft9:5311:1812:43
681 ft129 ft7:468:529:58
74 ft179 ft7:228:259:28
8170 ft206 ft7:488:5510:03
92 ft459 ft7:008:008:59
101 ft356 ft7:028:039:04
119 ft168 ft7:258:289:31
1252 ft121 ft7:418:479:53
136 ft91 ft7:378:439:48
1428 ft77 ft7:458:519:58
1519 ft99 ft7:398:449:50
1616 ft64 ft7:458:529:58
1731 ft66 ft7:498:5510:02
188 ft106 ft7:358:419:45
1933 ft78 ft7:468:5210:00
2016 ft64 ft7:458:529:58
2134 ft90 ft7:448:509:56
2229 ft96 ft7:428:489:54
2340 ft93 ft7:448:509:56
249 ft22 ft7:539:0110:09
2526 ft49 ft7:518:5810:05
2614 ft45 ft7:498:5610:04
Last 0.20 ft10 ft1:441:592:13

Explore the Colorado Fall Equinox Marathon course with the weather and your pace along the route, or compare it with other races.

Race Plan

Get your personalized Colorado Fall Equinox Marathon race plan

A mile-by-mile breakdown of where your time goes, weather-adjusted splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide, all built around your goal and race-day conditions.

Race Pace
Weather Splits
Nutrition
Gear & Packing
T-Minus
Carb Tracker
Spectator Guide
Race Band

About the Colorado Fall Equinox Marathon

The Colorado Fall Equinox Marathon is a point-to-point race in the Poudre River Canyon west of Fort Collins, Colorado. The marathon starts at Ohana Mountain Ranch in Buckhorn Canyon, climbs and drops through ranch country along Stove Prairie Creek for about 10 miles, then follows the Cache la Poudre River, Colorado's only National Wild and Scenic River, down the canyon to a finish meadow near Ted's Place, with about 2,600 feet of descent against 1,500 feet of climbing. The weekend also includes a USATF-certified downhill half marathon from the Mishawaka Amphitheater and a 5 mile; the 2026 edition ran those two without the marathon.

Race weekend

Sunday, September 20
6:30 AMMarathon (26.2 mi)
8:00 AMHalf Marathon (13.1 mi)8:00 AM5M (5.0 mi)

Colorado Fall Equinox Marathon FAQ

When is the 2026 Colorado Fall Equinox Marathon?

The 2026 Colorado Fall Equinox Marathon will be held on Sunday September 20, 2026.

Is the Colorado Fall Equinox Marathon a Boston Marathon Qualifier?

Yes, the Colorado Fall Equinox Marathon is an official Boston Marathon qualifier.

What is the time limit for the Colorado Fall Equinox Marathon?

The time limit for the Colorado Fall Equinox Marathon is 5 hours.

What will the weather be like for the 2026 Colorado Fall Equinox Marathon?

The forecast calls for a high of 74°F and a low of 54°F with a 100% chance of rain.

What is the elevation gain of the Colorado Fall Equinox Marathon?

The Colorado Fall Equinox Marathon course has about 1,562 ft (476 m) of climbing and 2,689 ft (820 m) of descent, a net drop of about 1,127 ft (344 m).

Is the Colorado Fall Equinox Marathon hilly?

Yes. It has about 60 ft (18 m) of climbing per mile. The hardest mile is mile 2, with 256 ft (78 m) of climbing and a 4.5% average grade. 4:00 on a flat course is about 4:02 here (2 minutes slower). It is hillier than 76% of the marathon courses racecast.io has mapped, measured by what the hills cost in time.

What is the weather usually like for the Colorado Fall Equinox Marathon?

Over the 7 years racecast.io has race-day weather for (2019 to 2026), it averaged 53°F at the start and 62°F by a typical finish. Rain fell during race hours in 2 of those years (2024 and 2025).

What was the hottest Colorado Fall Equinox Marathon?

Of the 7 years on record, 2021 was the warmest, reaching 77°F during race hours. The coldest start was 2019, at 42°F.

What was the windiest Colorado Fall Equinox Marathon?

Of the 7 years on record, 2024 was the windiest, with wind averaging 8 mph during race hours. The calmest was 2019, at 2 mph.

Colorado Fall Equinox Marathon weather history

Based on 7 years of data
Avg Temp
56°F
L:52° H:62°
RunScore
8
Conditions
Rain Freq
29%
2 of 7 yrs
Wind5mph
Dew45°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
partly-cloudy-night
55°/63°-
7
2025
partly-cloudy-night
55°/60°Light
8
2024
cloudy
48°/49°Light
10
2023
clear-night
48°/65°-
8
2022
clear-night
52°/66°-
8
2021
clear-night
65°/77°-
6
2019
clear-night
42°/58°-
10