Hartness Half Marathon

Greenville, SC, USA · December 12, 2026
partly-cloudy-day42°·50° high·Light·Dry
10
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Race Day Weather

partly-cloudy-day
42°at start
56° high
Light
Dry
Your goal
0:00:00

Cool start, ideal racing temps

Runners will face a gradual temperature rise from 39°F to 55°F during the race. With a light headwind at 6 mph and humidity at 57%, conditions are favorable. Runners should maintain their pace without concerns for heat, but remain vigilant of gusts up to 16 mph.

Race day forecast available in 30 days
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Race Info

The Hartness Half Marathon and 5K run through Hartness, a mixed-use development off Pelham Road near Interstate 85 in Greenville, South Carolina. The half marathon covers two laps of a roughly 6.5-mile loop mixing pavement, dirt trails, gravel roads and grass fields, with a companion 5K and half marathon relay held the same day. Race proceeds benefit Make-A-Wish South Carolina.

Race weekend

Saturday, December 12
9:00 AMHalf Marathon (13.1 mi)
9:00 AM5K (3.1 mi)
9:00 AMHalf Marathon Relay (13.1 mi)
Area Map

Course Map

FAQ

When is the 2026 Hartness Half Marathon?

The 2026 Hartness Half Marathon will be held on Saturday December 12, 2026.

What is the time limit for the Hartness Half Marathon?

The time limit for the Hartness Half Marathon is 4 hours.

What will the weather be like for the 2026 Hartness Half Marathon?

The forecast calls for a high of 57°F and a low of 39°F with a 11% chance of rain.

Historical Weather

Based on 8 years of data
Avg Temp
50°F
L:46° H:53°
RunScore
9
Conditions
Rain Freq
0%
0 of 8 yrs
Wind7mph
Dew34°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2025
clear-day
38°/48°-
10
2024
clear-day
36°/41°-
10
2023
clear-day
39°/51°-
10
2021
clear-day
51°/59°-
9
2020
partly-cloudy-day
55°/61°-
9
2019
clear-day
38°/43°-
10
2018
clear-day
43°/47°-
10
2017
cloudy
70°/77°-
4