Cannonball Marathon

Greensboro, NC, USA · October 17, 2026
partly-cloudy-day52°·63° high·Light·Dry
8
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Race Day Weather

partly-cloudy-day
52°at start
69° high
Light
Dry
Your goal
0:00:00

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 2 days
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Pace Calculator

26.2mi
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Race Plan

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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 72°F and a low of 52°F with a 6% chance of rain.

Historical Weather

Based on 9 years of data
Avg Temp
57°F
L:52° H:63°
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-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