The 2026 Cannonball Marathon has concluded.Share your finish2026 Results

Cannonball Marathon

Race complete
Greensboro, NC, USA · October 17, 2026
rain52°·54° high·Breezy·Light rain
8
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Race Day Weather

rain
52°at start
59° high
Breezy
Light rain
Your goal
0:00:00

Cool, rainy, breezy conditions

Runners will face cool temperatures starting at 54°F and ranging from 52°F to 55°F throughout the race. With a light rain expected and humidity at 87%, conditions will feel damp, and the wind will be moderate at 17 mph from the SE, impacting runners with a mix of headwinds and crosswinds. Runners should dress appropriately for the rain and adjust their pace conservatively to maintain energy on the rolling course.

cloudy8
rain8
cloudy8
rain9
rain10
cloudy10
cloudy8
cloudy8
cloudy8
cloudy8
cloudy9
partly-cloudy-day8

Pace Calculator

26.2mi
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Race Plan

Get your personalized Cannonball Marathon race plan

A mile-by-mile breakdown of where your time goes, weather-adjusted splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide, all built around your goal and race-day conditions.

Race Pace
Weather Splits
Nutrition
Gear & Packing
T-Minus
Carb Tracker
Spectator Guide
Race Band

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

Race weekend

Friday, October 16
6:45 PM5K (3.1 mi)
Saturday, October 17
7:45 AMMarathon (26.2 mi)
7:45 AMHalf Marathon (13.1 mi)
8:15 AM10K (6.2 mi)

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 66°F and a low of 47°F with a 100% chance of rain.

Historical Weather

Based on 10 years of data
Avg Temp
56°F
L:51° H:63°
RunScore
8
Conditions
Rain Freq
20%
2 of 10 yrs
Wind5mph
Dew50°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
cloudy
51°/54°Light
8
2025
partly-cloudy-night
49°/67°-
8
2024
partly-cloudy-night
47°/67°-
8
2023
rain
57°/59°Moderate
6
2022
partly-cloudy-night
37°/60°-
10
2021
partly-cloudy-night
48°/62°-
8
2019
partly-cloudy-night
57°/70°-
6
2018
cloudy
54°/63°-
8
2017
cloudy
60°/62°-
6
2016
cloudy
55°/61°-
8