Cannonball Marathon

Greensboro, NC, USA · October 16, 2027

55°·69° high·Light·Dry

Weather

Race Day Weather

55°at start

69° high

Light

Dry

Cool start, warming trend ahead

Runners will face temperatures starting at 55°F and climbing to 67°F by the finish, requiring pace adjustments as the race progresses. With light winds from the NW at 6 mph, the course will feel manageable, though humidity at 66% may impact comfort levels. Early laps should be run conservatively, with hydration strategies emphasized as temperatures rise.

Race day forecast available in 324 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 2027 Cannonball Marathon?

The 2027 Cannonball Marathon will be held on Saturday October 16, 2027.

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 2027 Cannonball Marathon?

The forecast calls for a high of 72°F and a low of 53°F with a 6% chance of rain.

Historical Weather

Based on 10 years of data

Avg Temp

67°F

L:53° H:67°

RunScore

Conditions

Rain Freq

20%

2 of 10 yrs

Wind5mph

Dew50°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2026 Cannonball Marathon Partly cloudy throughout the day with rain clearing later. 2026	51°/56°	Light	49°
2025 Cannonball Marathon Partly cloudy 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	38°/67°	-	37°
2021 Cannonball Marathon Partly cloudy throughout the day. 2021	51°/66°	-	46°
2019 Cannonball Marathon Partly cloudy throughout the day. 2019	59°/76°	-	55°
2018 Cannonball Marathon Clearing in the afternoon. 2018	55°/65°	-	46°
2017 Cannonball Marathon Partly cloudy throughout the day. 2017	60°/65°	-	60°
2016 Cannonball Marathon Partly cloudy throughout the day. 2016	56°/67°	-	53°

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