Hardrock 100

Silverton, CO, USA • July 10, 2026

Race Day Weather

partly-cloudy-day
54°
75° high
Breezy
Dry

Cool morning, warming afternoon

Runners will face a start-line temperature of 54°F, rising to a peak of 75°F by the finish. Winds will be from the S at 9 mph, with gusts reaching up to 30 mph. With low humidity at 32%, hydration will be essential, and runners should pace conservatively in the warmer afternoon.

Race day forecast available in 99 days
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The Hardrock 100 is a grueling ultramarathon that challenges runners with a 102.5-mile loop through Colorado's rugged San Juan Mountains. Traversing 4WD roads, dirt trails, and cross-country terrain, the course features a cumulative elevation change of 66,394 feet, with an average elevation exceeding 11,000 feet. Runners navigate 13 major passes between 12,000 and 13,000 feet, culminating at the 14,048-foot summit of Handies Peak. The race honors the area's mining heritage, requiring participants to "kiss the Hardrock," a ram's head painted on a stone, upon completion. Held annually in early July, the event is renowned for its demanding conditions, including steep climbs, snow packs, river crossings, and boulder fields, making it a premier test of endurance and mountaineering skills. Source

Area Map

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When is the 2026 Hardrock 100?

The 2026 Hardrock 100 will be held on Friday July 10, 2026.

What is the time limit for the Hardrock 100?

The time limit for the Hardrock 100 is 48 hours.

What will the weather be like for the 2026 Hardrock 100?

The forecast calls for a high of 75°F and a low of 54°F with a 0% chance of rain.

Historical Weather

Based on 24 years of data
Avg Temp
62°F
L:54° H:80°
RunScore
8
Conditions
Rain Freq
33%
8 of 24 yrs
Wind4mph
Dew42°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScore

2025 Hardrock 100

Clear conditions throughout the day.

2025
clear-day
50°/79°-
8

2024 Hardrock 100

Clear conditions throughout the day.

2024
clear-day
57°/83°-
8

2023 Hardrock 100

Clear conditions throughout the day.

2023
partly-cloudy-day
54°/81°-
8

2022 Hardrock 100

Partly cloudy throughout the day with late afternoon rain.

2022
cloudy
57°/77°Light
8

2021 Hardrock 100

Partly cloudy throughout the day with afternoon rain.

2021
clear-night
53°/75°Light
8

2016 Hardrock 100

Clear conditions throughout the day.

2016
clear-night
53°/80°-
8

2015 Hardrock 100

Partly cloudy throughout the day with rain.

2015
clear-day
46°/66°Light
8

2014 Hardrock 100

Partly cloudy throughout the day with rain.

2014
clear-day
58°/77°Light
8

2013 Hardrock 100

Becoming cloudy in the afternoon with rain.

2013
clear-day
55°/73°Light
8

2012 Hardrock 100

Becoming cloudy in the afternoon with rain.

2012
clear-day
55°/76°Light
8

2011 Hardrock 100

Partly cloudy throughout the day with rain.

2011
partly-cloudy-day
55°/78°Light
8

2010 Hardrock 100

Becoming cloudy in the afternoon with early morning rain.

2010
clear-day
52°/74°-
8

2009 Hardrock 100

Clear conditions throughout the day with late afternoon rain.

2009
clear-day
57°/90°Light
7

2008 Hardrock 100

Becoming cloudy in the afternoon.

2008
clear-day
56°/78°-
8

2007 Hardrock 100

Clear conditions throughout the day.

2007
clear-night
57°/83°-
8

2006 Hardrock 100

Clear conditions throughout the day.

2006
clear-day
52°/83°-
8

2005 Hardrock 100

Clear conditions throughout the day.

2005
clear-day
46°/91°-
8

2004 Hardrock 100

Becoming cloudy in the afternoon.

2004
clear-day
48°/75°-
8

2003 Hardrock 100

Clear conditions throughout the day.

2003
clear-day
59°/93°-
7

2001 Hardrock 100

Clearing in the afternoon.

2001
clear-day
61°/86°-
8

2000 Hardrock 100

Becoming cloudy in the afternoon.

2000
clear-day
61°/88°-
8

1999 Hardrock 100

Becoming cloudy in the afternoon.

1999
partly-cloudy-day
56°/77°-
8

1998 Hardrock 100

Becoming cloudy in the afternoon.

1998
clear-day
56°/83°-
8

1997 Hardrock 100

Partly cloudy throughout the day.

1997
partly-cloudy-day
48°/83°-
8

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