Cannonball Marathon

Greensboro, NC, USA · October 17, 2026

52°·68° high·Light·Dry

Weather

Race Day Weather

52°at start

69° high

Light

Dry

Cool start, gradual warming

Runners will face a temperature rising from 52°F to 69°F, with average humidity at 63% and a dew point of 47°F. Winds will be mild from the NW at 7 mph, gusting up to 20 mph. Runners should maintain hydration and consider adjusting their pace as temperatures rise, especially in the latter stages.

Race day forecast available in 27 days

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Distance: 26.2mi

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Race Info

The Cannonball Marathon is an annual marathon, half marathon, 10K, and 5K held in Greensboro, North Carolina, one of the longest-running road races in the state. The marathon and half marathon share a course starting and finishing at Jaycee Park within Country Park, following the Atlantic & Yadkin Greenway through north Greensboro; marathon runners complete two loops. The marathon is a Boston Marathon qualifier. Proceeds from the race support the adjacent Greensboro Science Center. Source

Website

FAQ

When is the 2026 Cannonball Marathon?

The 2026 Cannonball Marathon will be held on Saturday October 17, 2026.

Is the Cannonball Marathon a Boston Marathon Qualifier?

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

What is the time limit for the Cannonball Marathon?

The time limit for the Cannonball Marathon is 6 hours.

What will the weather be like for the 2026 Cannonball Marathon?

The forecast calls for a high of 72°F and a low of 52°F with a 6% chance of rain.

Historical Weather

Based on 9 years of data

Avg Temp

69°F

L:53° H:69°

RunScore

Conditions

Rain Freq

11%

1 of 9 yrs

Wind4mph

Dew50°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2025 Cannonball Marathon Clear conditions throughout the day. 2025	50°/75°	-	53°
2024 Cannonball Marathon Clear conditions throughout the day. 2024	48°/72°	-	45°
2023 Cannonball Marathon Partly cloudy throughout the day with a chance of rain throughout the day. 2023	58°/63°	Light	58°
2022 Cannonball Marathon Clear conditions throughout the day. 2022	37°/67°	-	37°
2021 Cannonball Marathon Partly cloudy throughout the day. 2021	52°/66°	-	46°
2019 Cannonball Marathon Partly cloudy throughout the day. 2019	58°/77°	-	55°
2018 Cannonball Marathon Clearing in the afternoon. 2018	55°/65°	-	46°
2017 Cannonball Marathon Partly cloudy throughout the day. 2017	60°/66°	-	60°
2016 Cannonball Marathon Partly cloudy throughout the day. 2016	55°/67°	-	53°

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