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 morning, warm finish

Runners will face a temperature rise from 52°F at the start to a high of 69°F. With a light wind from the NW at 7 mph and average humidity of 63%, pacing adjustments are advisable as temperatures climb. Staying hydrated and considering gear changes will be essential for comfort in the warmer conditions.

Race day forecast available in 143 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°