Runners will start in chilly 32°F conditions — dress in layers for the corral and plan to shed early. Temps will climb significantly to 54°F by later miles, so expect fading conditions as the race progresses. Light winds shouldn't be a major factor for pacing.

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Distance: 13.1mi

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About the Runs With Scissors Races Half Marathon

The half marathon is 10 laps of a 1.31-mile counter-clockwise loop around Mann-Nyholt Lake in Riverdale Regional Park in Brighton, Colorado, north of Denver. Much of the loop is on scree-covered trail. It is the shortest of the three distances and shares the same loop with the marathon and 50K runners on the Saturday of race weekend.

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Race weekend

Saturday, April 25

7:00 AM50K (31.1 mi)7:00 AMMarathon (26.2 mi)

7:00 AMHalf Marathon (13.1 mi)

Course Map

Runs With Scissors Races Half Marathon FAQ

When is the 2026 Runs With Scissors Races Half Marathon?

The 2026 Runs With Scissors Races Half Marathon will be held on Saturday April 25, 2026.

What is the time limit for the Runs With Scissors Races Half Marathon?

The time limit for the Runs With Scissors Races Half Marathon is 9 hours.

What will the weather be like for the 2026 Runs With Scissors Races Half Marathon?

The forecast calls for a high of 54°F and a low of 32°F with a 0% chance of rain. Check our detailed hourly forecast above for the best half marathon race plan.

What is the weather usually like for the Runs With Scissors Races Half Marathon?

Over the 9 years racecast.io has race-day weather for (2015 to 2026), it averaged 40°F at the start and 45°F by a typical finish. Rain fell during race hours in 3 of those years (2017, 2018 and 2024).

What was the hottest Runs With Scissors Races Half Marathon?

Of the 9 years on record, 2016 was the warmest, reaching 60°F during race hours. The coldest start was 2018, at 32°F.

What was the windiest Runs With Scissors Races Half Marathon?

Of the 9 years on record, 2016 was the windiest, with wind averaging 16 mph during race hours. The calmest was 2017, at 2 mph.

Runs With Scissors Races Half Marathon weather history

Based on 9 years of data

Avg Temp

43°F

L:40° H:45°

RunScore

Conditions

Rain Freq

33%

3 of 9 yrs

Wind8mph

Dew32°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2026 Runs With Scissors Races Half Marathon Partly cloudy throughout the day. 2026	32°/34°	-	26°
2025 Runs With Scissors Races Half Marathon Partly cloudy throughout the day. 2025	41°/46°	-	41°
2024 Runs With Scissors Races Half Marathon Cloudy skies throughout the day with a chance of rain or snow throughout the day. 2024	38°/39°	Moderate	37°
2023 Runs With Scissors Races Half Marathon Partly cloudy throughout the day. 2023	42°/54°	-	19°
2019 Runs With Scissors Races Half Marathon Partly cloudy throughout the day. 2019	41°/46°	-	36°
2018 Runs With Scissors Races Half Marathon Cloudy skies throughout the day with a chance of rain or snow throughout the day. 2018	32°/33°	Light	31°
2017 Runs With Scissors Races Half Marathon Partly cloudy throughout the day with rain or snow clearing later. 2017	35°/38°	Light	35°
2016 Runs With Scissors Races Half Marathon Partly cloudy throughout the day. 2016	57°/60°	-	33°
2015 Runs With Scissors Races Half Marathon Partly cloudy throughout the day. 2015	44°/57°	-	29°