Cannonball Marathon

Greensboro, NC, USA · October 17, 2026
partly-cloudy-day52°·67° high·Light·Dry
9
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Race Day Weather

partly-cloudy-day
52°at start
69° high
Light
Dry

Mild start, warm finish ahead

Runners will face a temperature rise from 51°F at the start to 69°F by the finish, with a maximum wind speed of 7 mph acting as a light non-factor. Humidity will hover around 63%, suggesting a comfortable but slightly humid day. As temperatures climb, it’s advisable to adjust pace in the later laps and ensure consistent hydration throughout to manage the warming conditions.

Race day forecast available in 4 days
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Pace Calculator

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

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
68°F
L:53° H:68°
RunScore
8
Conditions
Rain Freq
11%
1 of 9 yrs
Wind4mph
Dew50°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2025
partly-cloudy-day
50°/75°-
8
2024
partly-cloudy-day
48°/72°-
9
2023
rain
58°/63°Light
6
2022
partly-cloudy-day
38°/67°-
8
2021
cloudy
51°/66°-
8
2019
partly-cloudy-day
59°/76°-
8
2018
partly-cloudy-day
55°/65°-
8
2017
cloudy
60°/65°-
8
2016
cloudy
56°/67°-
9