That Dam Run Half Marathon

Greenwood Village, CO, USA · March 7, 2027
partly-cloudy-day33°·42° high·Light·Dry
10
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Race Day Weather

partly-cloudy-day
33°at start
44° high
Light
Dry

Cold start — layer up, warming through the race

Runners will start in chilly 33°F conditions — dress in layers for the corral and plan to shed early. Temperatures rising to 44°F through the course will gradually increase perceived effort in the second half. Light winds shouldn't be a major factor for pacing.

Race day forecast available in 153 days
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Distance: 13.1mi
0:00:00
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Race Info

That Dam Run is a half marathon, 10K, and 5K held at Cherry Creek State Park near Greenwood Village, Colorado. The course starts near Dam Road and South Dayton Street and crosses the Cherry Creek Dam, with views of the reservoir, downtown Denver, and the Rocky Mountains. It is the closing event of the RunDenver Series, produced by HAL Sports.

Website

Race weekend

Sunday, March 7
8:00 AMHalf Marathon (13.1 mi)
8:30 AM10K (6.2 mi)
8:45 AM5K (3.1 mi)
Area Map

Course Map

Course Map Unavailable

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FAQ

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When is the 2027 That Dam Run Half Marathon?

The 2027 That Dam Run Half Marathon will be held on Sunday March 7, 2027.

What is the time limit for the That Dam Run Half Marathon?

The time limit for the That Dam Run Half Marathon is 3.5 hours.

What will the weather be like for the 2027 That Dam Run Half Marathon?

The forecast calls for a high of 52°F and a low of 25°F with a 3% chance of rain.

Historical Weather

Based on 3 years of data
Avg Temp
46°F
L:39° H:52°
RunScore
10
Conditions
Rain Freq
0%
0 of 3 yrs
Wind5mph
Dew16°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScore

2026 That Dam Run Half Marathon

Partly cloudy throughout the day.

2026
partly-cloudy-day
41°/56°-
10

2025 That Dam Run Half Marathon

Partly cloudy throughout the day.

2025
partly-cloudy-day
42°/56°-
10

2024 That Dam Run Half Marathon

Partly cloudy throughout the day.

2024
partly-cloudy-day
34°/44°-
10

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Free guidesFueling Guide·Race Morning Guide·Race Day Gear Guide·Pacing Strategy Guide

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