Starting at 62°F, heat will be a factor from the gun — go out conservative and stay on top of hydration. Temperatures rising to 75°F through the course will gradually increase perceived effort in the second half. Moderate winds around 14mph may affect pacing on open sections of the course.

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Distance: 13.1mi

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Race Info

The Flagstaff Half Marathon is run entirely off-road on single and double track trails and forest roads in the Coconino National Forest. It starts and finishes at Arizona Nordic Village, northwest of Flagstaff off US 180, and stays above 8,000 feet among ponderosa pine and aspen. The course gains about 1,200 feet, and the full marathon is two laps of this same route.

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Race weekend

Saturday, October 3

8:00 AMMarathon (26.2 mi)

9:00 AMHalf Marathon (13.1 mi)

9:30 AM10K (6.2 mi)

FAQ

When is the 2026 Flagstaff Half Marathon?

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

What will the weather be like for the 2026 Flagstaff Half Marathon?

The forecast calls for a high of 75°F and a low of 43°F with a 0% chance of rain. Check our detailed hourly forecast above for the best half marathon race plan.

Historical Weather

Based on 19 years of data

Avg Temp

67°F

L:64° H:70°

RunScore

Conditions

Rain Freq

1 of 19 yrs

Wind7mph

Dew34°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2026 Flagstaff Half Marathon Clear conditions throughout the day. 2026	62°/70°	-	42°
2025 Flagstaff Half Marathon Clear conditions throughout the day. 2025	56°/60°	-	26°
2024 Flagstaff Half Marathon Clear conditions throughout the day. 2024	74°/79°	-	26°
2023 Flagstaff Half Marathon Clear conditions throughout the day. 2023	55°/64°	-	14°
2022 Flagstaff Half Marathon Partly cloudy throughout the day with late afternoon rain. 2022	63°/66°	-	37°
2021 Flagstaff Half Marathon Clear conditions throughout the day. 2021	57°/61°	-	41°
2018 Flagstaff Half Marathon Partly cloudy throughout the day. 2018	74°/79°	-	36°
2017 Flagstaff Half Marathon Clear conditions throughout the day. 2017	62°/68°	-	40°
2016 Flagstaff Half Marathon Clear conditions throughout the day. 2016	64°/71°	-	25°
2015 Flagstaff Half Marathon Clear conditions throughout the day. 2015	69°/74°	-	36°
2014 Flagstaff Half Marathon Partly cloudy throughout the day with afternoon rain. 2014	66°/72°	-	54°
2013 Flagstaff Half Marathon Clear conditions throughout the day. 2013	65°/72°	-	48°
2012 Flagstaff Half Marathon Partly cloudy throughout the day. 2012	68°/75°	-	32°
2011 Flagstaff Half Marathon Becoming cloudy in the afternoon. 2011	68°/74°	-	31°
2010 Flagstaff Half Marathon Clear conditions throughout the day. 2010	66°/71°	-	35°
2009 Flagstaff Half Marathon Clear conditions throughout the day. 2009	71°/76°	-	21°
2008 Flagstaff Half Marathon Clear conditions throughout the day with afternoon rain. 2008	69°/78°	-	37°
2007 Flagstaff Half Marathon Partly cloudy throughout the day with rain. 2007	55°/70°	Light	48°
2006 Flagstaff Half Marathon Clear conditions throughout the day. 2006	45°/51°	-	26°