Leadville Trail Marathon

Leadville, CO, USA • June 27, 2026

Race Day Weather

40°

67° high

Breezy

Dry

Cool start, climbing temps ahead

Runners will face a temperature increase from 40°F at the start to 67°F by the finish, with average humidity at 44%. Winds will start as a crosswind but shift to a tailwind around Mile 6 before transitioning to headwinds from Miles 14 to 21. Given the hilly terrain and changing winds, pacing conservatively early is advisable, especially during the climbs, while adjusting hydration frequency as temperatures rise.

Race day forecast available in 92 days

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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 2026 Leadville Trail Marathon?

The 2026 Leadville Trail Marathon will be held on Saturday June 27, 2026.

Historical Weather

Based on 23 years of data

Avg Temp

66°F

L:41° H:67°

RunScore

Conditions

Rain Freq

1 of 23 yrs

Wind9mph

Dew28°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2025 Leadville Trail Marathon Clear conditions throughout the day. 2025	34°/71°	-	22°
2024 Leadville Trail Marathon Partly cloudy throughout the day. 2024	49°/64°	-	44°
2023 Leadville Trail Marathon Partly cloudy throughout the day with rain in the morning and afternoon. 2023	32°/46°	Light	31°
2022 Leadville Trail Marathon Partly cloudy throughout the day with late afternoon rain. 2022	50°/62°	-	39°
2021 Leadville Trail Marathon Partly cloudy throughout the day. 2021	40°/64°	-	41°
2019 Leadville Trail Marathon Becoming cloudy in the afternoon. 2019	30°/60°	-	31°
2018 Leadville Trail Marathon Partly cloudy throughout the day with late afternoon rain. 2018	48°/64°	-	36°
2017 Leadville Trail Marathon Becoming cloudy in the afternoon. 2017	53°/70°	-	27°
2016 Leadville Trail Marathon Clear conditions throughout the day. 2016	34°/69°	-	17°
2015 Leadville Trail Marathon Clear conditions throughout the day. 2015	39°/72°	-	28°
2014 Leadville Trail Marathon Becoming cloudy in the afternoon. 2014	41°/58°	-	8°
2013 Leadville Trail Marathon Partly cloudy throughout the day with rain. 2013	47°/73°	-	36°
2012 Leadville Trail Marathon Partly cloudy throughout the day. 2012	38°/70°	-	28°
2011 Leadville Trail Marathon Clear conditions throughout the day. 2011	44°/68°	-	37°
2010 Leadville Trail Marathon Partly cloudy throughout the day. 2010	44°/66°	-	39°
2009 Leadville Trail Marathon Becoming cloudy in the afternoon with afternoon rain. 2009	41°/74°	-	37°
2008 Leadville Trail Marathon Becoming cloudy in the afternoon with late afternoon rain. 2008	42°/72°	-	33°
2007 Leadville Trail Marathon Becoming cloudy in the afternoon with late afternoon rain. 2007	41°/70°	-	35°
2006 Leadville Trail Marathon Becoming cloudy in the afternoon with late afternoon rain. 2006	40°/69°	-	35°
2005 Leadville Trail Marathon Clear conditions throughout the day. 2005	40°/69°	-	29°
2004 Leadville Trail Marathon Clear conditions throughout the day. 2004	34°/63°	-	20°
2002 Leadville Trail Marathon Partly cloudy throughout the day. 2002	45°/65°	-	42°
2001 Leadville Trail Marathon Partly cloudy throughout the day. 2001	43°/72°	-	41°