Sundance to Spearfish Marathon

Spearfish, SD, USA · September 13, 2026
partly-cloudy-day48°·67° high·Light·Dry
9
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Race Day Weather

partly-cloudy-day
48°at start
69° high
Light
Dry

Cool start, gradual warming

Runners will face a temperature rise from 48°F at the start to a peak of 67°F. Winds will be light at 7 mph from the WSW, with gusts up to 19 mph, providing minimal resistance. With a comfortable humidity of 53%, runners should maintain a steady pace and stay hydrated as temperatures climb.

Race day forecast available in 109 days
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Distance: 26.2mi
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Race Info

The Sundance to Spearfish Marathon offers runners a predominantly downhill course through the scenic Black Hills, starting in Wyoming and finishing in South Dakota. The first 12 miles feature improved gravel roads winding through mountain meadows, valleys, and canyons, with a notable descent of 1,606 feet and a pass by the "Dances with Wolves" film site at mile 9.35. The final 14 miles are on paved roads, descending Spearfish Canyon Highway into Spearfish, with an additional drop of 1,364 feet. This USATF-certified course is ideal for those aiming to qualify for the Boston Marathon, as it is one of only two such courses in Wyoming and South Dakota.

Area Map

Course Map

FAQ

When is the 2026 Sundance to Spearfish Marathon?

The 2026 Sundance to Spearfish Marathon will be held on Sunday September 13, 2026.

Is the Sundance to Spearfish Marathon a Boston Marathon Qualifier?

Yes, the Sundance to Spearfish Marathon is an official Boston Marathon qualifier.

What is the time limit for the Sundance to Spearfish Marathon?

The time limit for the Sundance to Spearfish Marathon is 6 hours.

What will the weather be like for the 2026 Sundance to Spearfish Marathon?

The forecast calls for a high of 72°F and a low of 48°F with a 12% chance of rain.

Historical Weather

Based on 3 years of data
Avg Temp
69°F
L:51° H:69°
RunScore
8
Conditions
Rain Freq
0%
0 of 3 yrs
Wind7mph
Dew50°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2025
clear-day
46°/70°-
8
2024
clear-day
54°/82°-
8
2023
partly-cloudy-day
54°/56°-
9