Leadville Trail Marathon & Heavy Half

Leadville, CO, USA · June 26, 2027
partly-cloudy-day44°·71° high·Light·Dry
8
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Race Day Weather

partly-cloudy-day
44°at start
71° high
Light
Dry

Cool start, warm finish ahead

Runners will face a cool start at 45°F, gradually warming to 67°F at the finish. Wind will be light, but expect gusty conditions with a headwind between miles 7-8 and 16-20. Hydration is crucial, particularly as temperatures rise, and runners should pace conservatively during the climbs, especially from mile 11 to 14. A throwaway layer may be useful before the race due to a feels-like temperature dropping to 43°F.

Race day forecast available in 235 days
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Pace Calculator

Distance: 26.4mi
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Race Info

This is a 26.2-mile (42.2 km) marathon through the mining districts east of Leadville, is held in June each year. The midpoint of the course is at Mosquito Pass, with an altitude of 13,185 feet (4,019 m). In 2006, a "heavy" half marathon event of 15 miles was added, which is run on the same day and also goes to the top of Mosquito Pass. Wikipedia

FAQ

When is the 2027 Leadville Trail Marathon & Heavy Half?

The 2027 Leadville Trail Marathon & Heavy Half will be held on Saturday June 26, 2027.

What is the time limit for the Leadville Trail Marathon & Heavy Half?

The time limit for the Leadville Trail Marathon & Heavy Half is 9.5 hours.

What will the weather be like for the 2027 Leadville Trail Marathon & Heavy Half?

The forecast calls for a high of 74°F and a low of 42°F with a 5% chance of rain.

What is the elevation profile of the Leadville Trail Marathon & Heavy Half?

The Leadville Trail Marathon & Heavy Half has 6167ft of total elevation gain. View the interactive course map above for a detailed elevation profile.

Historical Weather

Based on 24 years of data
Avg Temp
66°F
L:46° H:70°
RunScore
8
Conditions
Rain Freq
8%
2 of 24 yrs
Wind12mph
Dew29°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
partly-cloudy-day
46°/70°-
7
2025
clear-day
41°/72°-
8
2024
cloudy
50°/72°-
8
2023
partly-cloudy-day
35°/53°Light
7
2022
cloudy
50°/65°-
8
2021
partly-cloudy-day
44°/68°-
8
2019
clear-day
38°/62°-
8
2018
clear-day
48°/64°-
8
2017
clear-day
55°/72°-
8
2016
clear-day
47°/78°-
8
2015
clear-day
49°/75°-
8
2014
clear-day
49°/59°-
8
2013
clear-day
47°/74°-
8
2012
clear-day
47°/71°-
8
2011
clear-day
44°/73°-
8
2010
clear-day
45°/70°-
8
2009
clear-day
48°/74°Light
8
2008
clear-day
47°/73°-
8
2007
clear-day
45°/72°-
8
2006
clear-day
45°/71°-
8
2005
clear-day
46°/71°-
8
2004
clear-day
38°/66°-
8
2002
cloudy
47°/68°-
8
2001
clear-day
48°/81°-
8