Flagstaff Marathon

Flagstaff, AZ, USA • October 3, 2026

Race Day Weather

43°

69° high

Breezy

Dry

Cool start — fast day potential, big temp swing, moderate wind

A cool 43°F at the start line is ideal for fast times — expect to warm up quickly once you're moving. Temps will climb significantly to 69°F by later miles, so expect fading conditions as the race progresses. Moderate winds around 13 mph may affect pacing on open sections of the course.

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Pre-raceRace windowPost-race

Known as the “The Coolest Marathon in Arizona,” The Flagstaff Marathon is a completely off-road course in the Coconino National Forest. At 8,000+ ft. elevation, it is known as one of the most challenging courses in the country, with 1,200 feet of climbing for the half marathon and 2,400 for the full, and composed entirely of single and double track trails. Source

Course Map

FAQ

When is the 2026 Flagstaff Marathon?

The 2026 Flagstaff Marathon will be held on Saturday October 3, 2026.

What is the time limit for the Flagstaff Marathon?

The time limit for the Flagstaff Marathon is 7 hours.

Historical Weather

Based on 18 years of data

Avg Temp

71°F

L:54° H:73°

RunScore

Conditions

Rain Freq

11%

2 of 18 yrs

Wind11mph

Dew32°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2025 Flagstaff Marathon Clear conditions throughout the day. 2025	51°/64°	-	26°
2024 Flagstaff Marathon Clear conditions throughout the day. 2024	59°/83°	-	27°
2023 Flagstaff Marathon Clear conditions throughout the day. 2023	36°/70°	-	14°
2022 Flagstaff Marathon Partly cloudy throughout the day with rain. 2022	48°/67°	Light	39°
2021 Flagstaff Marathon Clear conditions throughout the day. 2021	46°/64°	-	38°
2018 Flagstaff Marathon Clearing in the afternoon. 2018	55°/82°	-	39°
2017 Flagstaff Marathon Clear conditions throughout the day. 2017	55°/70°	-	34°
2016 Flagstaff Marathon Clear conditions throughout the day. 2016	53°/76°	-	20°
2015 Flagstaff Marathon Clear conditions throughout the day. 2015	58°/77°	-	37°
2014 Flagstaff Marathon Partly cloudy throughout the day with afternoon rain. 2014	63°/73°	-	52°
2013 Flagstaff Marathon Clear conditions throughout the day. 2013	61°/72°	-	48°
2012 Flagstaff Marathon Partly cloudy throughout the day. 2012	57°/79°	-	30°
2011 Flagstaff Marathon Becoming cloudy in the afternoon. 2011	55°/79°	-	28°
2010 Flagstaff Marathon Clear conditions throughout the day. 2010	60°/75°	-	33°
2009 Flagstaff Marathon Clear conditions throughout the day. 2009	54°/79°	-	19°
2008 Flagstaff Marathon Clear conditions throughout the day with late afternoon rain. 2008	58°/76°	-	36°
2007 Flagstaff Marathon Partly cloudy throughout the day with rain. 2007	54°/65°	Light	52°
2006 Flagstaff Marathon Partly cloudy throughout the day. 2006	42°/55°	-	26°