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, warming trend

Runners will face a temperature rise from 52°F at the start to 69°F by the end, with an average humidity of 63% and a dew point of 47°F. Wind will be light at 7 mph from the NW, with occasional gusts up to 20 mph. Runners should consider adjusting their pace as temperatures increase and stay hydrated throughout the race.

Race day forecast available in 123 days

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Distance: 26.2mi

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Race Info

For over 20 years, The First Horizon Bank Cannonball Marathon is one of the longest running endurance events in North Carolina and a Boston Qualifier! The backdrop for the race is Country Park and the beautiful north Greensboro countryside. Country Park, with the Greensboro Science Center next door, is a great place for the family to hang out and enjoy the post-race celebration! Source

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Course Map

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 7% 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°