Hardrock 100

Silverton, CO, USA • July 10, 2026

Race Day Weather

54°

75° high

Breezy

Dry

Warming trend, steady conditions

Runners will face a temperature increase from 54°F to 75°F, with humidity remaining low at 32%. Wind will be a gentle S headwind throughout, peaking at 9 mph with gusts up to 30 mph. Competitors should start conservatively to manage the rising temperatures and consider hydration strategies as they progress.

Race day forecast available in 105 days

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Pre-raceRace windowPost-race

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

Course Map

FAQ

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.

Historical Weather

Based on 24 years of data

Avg Temp

62°F

L:54° H:80°

RunScore

Conditions

Rain Freq

33%

8 of 24 yrs

Wind4mph

Dew42°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2025 Hardrock 100 Clear conditions throughout the day. 2025	50°/79°	-	27°
2024 Hardrock 100 Clear conditions throughout the day. 2024	57°/83°	-	29°
2023 Hardrock 100 Clear conditions throughout the day. 2023	54°/81°	-	16°
2022 Hardrock 100 Partly cloudy throughout the day with late afternoon rain. 2022	57°/77°	Light	48°
2021 Hardrock 100 Partly cloudy throughout the day with afternoon rain. 2021	53°/75°	Light	43°
2016 Hardrock 100 Clear conditions throughout the day. 2016	53°/80°	-	24°
2015 Hardrock 100 Partly cloudy throughout the day with rain. 2015	46°/66°	Light	41°
2014 Hardrock 100 Partly cloudy throughout the day with rain. 2014	58°/77°	Light	48°
2013 Hardrock 100 Becoming cloudy in the afternoon with rain. 2013	55°/73°	Light	49°
2012 Hardrock 100 Becoming cloudy in the afternoon with rain. 2012	55°/76°	Light	46°
2011 Hardrock 100 Partly cloudy throughout the day with rain. 2011	55°/78°	Light	42°
2010 Hardrock 100 Becoming cloudy in the afternoon with early morning rain. 2010	52°/74°	-	43°
2009 Hardrock 100 Clear conditions throughout the day with late afternoon rain. 2009	57°/90°	Light	43°
2008 Hardrock 100 Becoming cloudy in the afternoon. 2008	56°/78°	-	41°
2007 Hardrock 100 Clear conditions throughout the day. 2007	57°/83°	-	30°
2006 Hardrock 100 Clear conditions throughout the day. 2006	52°/83°	-	26°
2005 Hardrock 100 Clear conditions throughout the day. 2005	46°/91°	-	27°
2004 Hardrock 100 Becoming cloudy in the afternoon. 2004	48°/75°	-	29°
2003 Hardrock 100 Clear conditions throughout the day. 2003	59°/93°	-	36°
2001 Hardrock 100 Clearing in the afternoon. 2001	61°/86°	-	51°
2000 Hardrock 100 Becoming cloudy in the afternoon. 2000	61°/88°	-	45°
1999 Hardrock 100 Becoming cloudy in the afternoon. 1999	56°/77°	-	56°
1998 Hardrock 100 Becoming cloudy in the afternoon. 1998	56°/83°	-	53°
1997 Hardrock 100 Partly cloudy throughout the day. 1997	48°/83°	-	36°