Casper Marathon

Casper, WY, USA · June 6, 2027·

51°·67° high·Breezy·Dry

Weather

Casper Marathon race day weather

51°at start

71° high

Breezy

Dry

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Cool start, warming finish

Runners will face a temperature rise from 51°F at the start to 67°F by the finish, with a light wind from the WSW at 10 mph. Humidity will remain moderate at 50%, making for comfortable conditions. Runners should consider adjusting their pace as temperatures increase and stay hydrated throughout the race.

Race day forecast available in 193 days

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Distance: 26.2mi

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About the Casper Marathon

The Casper Marathon is an annual road race held in Casper, Wyoming, first run in 2003. The course starts at the WYO Sports Ranch and finishes at Crossroads Park, following the Platte River Trails system through downtown Casper. The marathon is certified as a Boston Marathon qualifier and is sanctioned by USA Track and Field. The event also includes a half marathon, 10K, and relay divisions. Source

Website

Race weekend

Sunday, June 6

6:00 AMMarathon (26.2 mi)

6:00 AMHalf Marathon (13.1 mi)6:00 AM10K (6.2 mi)

Course Map

Casper Marathon FAQ

When is the 2027 Casper Marathon?

The 2027 Casper Marathon will be held on Sunday June 6, 2027.

Is the Casper Marathon a Boston Marathon Qualifier?

Yes, the Casper Marathon is an official Boston Marathon qualifier.

What is the time limit for the Casper Marathon?

The time limit for the Casper Marathon is 6.5 hours.

What will the weather be like for the 2027 Casper Marathon?

The forecast calls for a high of 73°F and a low of 49°F with a 7% chance of rain.

What is the weather usually like for the Casper Marathon?

Over the 23 years racecast.io has race-day weather for (2003 to 2026), it averaged 48°F at the start and 66°F by a typical finish. Rain fell during race hours in 2 of those years (2014 and 2015).

What was the hottest Casper Marathon?

Of the 23 years on record, 2004 was the warmest, reaching 83°F during race hours. The coldest start was 2013, at 36°F.

What was the windiest Casper Marathon?

Of the 23 years on record, 2008 was the windiest, with wind averaging 18 mph during race hours. The calmest was 2010, at 1 mph.

Casper Marathon weather history

Based on 23 years of data

Avg Temp

57°F

L:47° H:66°

RunScore

Conditions

Rain Freq

2 of 23 yrs

Wind7mph

Dew44°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2026 Casper Marathon Clear conditions throughout the day. 2026	51°/77°	-	45°
2025 Casper Marathon Clear conditions throughout the day with late afternoon rain. 2025	47°/77°	-	45°
2024 Casper Marathon Becoming cloudy in the afternoon with afternoon rain. 2024	56°/68°	-	42°
2023 Casper Marathon Partly cloudy throughout the day with afternoon rain. 2023	52°/62°	-	53°
2022 Casper Marathon Becoming cloudy in the afternoon. 2022	51°/66°	-	46°
2021 Casper Marathon Clear conditions throughout the day. 2021	57°/67°	-	46°
2019 Casper Marathon Clear conditions throughout the day. 2019	44°/66°	-	49°
2018 Casper Marathon Clear conditions throughout the day. 2018	39°/63°	-	39°
2017 Casper Marathon Clear conditions throughout the day. 2017	46°/72°	-	46°
2016 Casper Marathon Partly cloudy throughout the day. 2016	48°/70°	-	44°
2015 Casper Marathon Partly cloudy throughout the day with rain clearing later. 2015	53°/64°	Light	51°
2014 Casper Marathon Partly cloudy throughout the day with rain. 2014	44°/61°	Light	47°
2013 Casper Marathon Clear conditions throughout the day. 2013	36°/63°	-	36°
2012 Casper Marathon Clear conditions throughout the day with afternoon rain. 2012	53°/70°	-	45°
2011 Casper Marathon Clear conditions throughout the day. 2011	45°/74°	-	44°
2010 Casper Marathon Clear conditions throughout the day. 2010	43°/62°	-	45°
2009 Casper Marathon Cloudy skies throughout the day with rain. 2009	41°/45°	-	40°
2008 Casper Marathon Partly cloudy throughout the day. 2008	36°/54°	-	27°
2007 Casper Marathon Clear conditions throughout the day. 2007	40°/64°	-	46°
2006 Casper Marathon Clear conditions throughout the day. 2006	48°/71°	-	47°
2005 Casper Marathon Clear conditions throughout the day. 2005	45°/64°	-	42°
2004 Casper Marathon Clear conditions throughout the day. 2004	63°/83°	-	38°
2003 Casper Marathon Partly cloudy throughout the day with late afternoon rain. 2003	50°/62°	-	49°