Jacksonville Half Marathon

Jacksonville, FL, USA · December 12, 2026·
partly-cloudy-day55°·58° high·Breezy·Dry
8
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Race Day Weather

partly-cloudy-day
55°at start
66° high
Breezy
Dry
Your goal
0:00:00

Comfortable temps, warming through the race

Mild 55°F temps at gun time mean comfortable early miles without overheating risk. Temperatures rising to 66°F through the course will gradually increase perceived effort in the second half. Light winds shouldn't be a major factor for pacing. Moderate humidity at 76% is worth noting for effort level, especially in later miles.

Race day forecast available in 42 days
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Pace Calculator

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Race Plan

Get your personalized Jacksonville Half 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 Jacksonville Half Marathon starts at The Bolles School on San Jose Boulevard and runs through Jacksonville's Mandarin neighborhood, with the return leg along the St. Johns River. The USATF-certified course is flat, with plenty of shade and no steep hills, bridges or overpasses. Runners finish on the track inside the Bolles School stadium.

Race weekend

Saturday, December 12
7:00 AMMarathon (26.2 mi)
7:00 AMHalf Marathon (13.1 mi)
7:00 AM5K (3.1 mi)

FAQ

When is the 2026 Jacksonville Half Marathon?

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

What is the time limit for the Jacksonville Half Marathon?

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

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

The forecast calls for a high of 69°F and a low of 55°F with a 6% chance of rain. Check our detailed hourly forecast above for the best half marathon race plan.

Historical Weather

Based on 14 years of data
Avg Temp
58°F
L:56° H:59°
RunScore
7
Conditions
Rain Freq
14%
2 of 14 yrs
Wind8mph
Dew52°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2025
partly-cloudy-night
46°/54°-
10
2024
partly-cloudy-night
59°/62°-
6
2023
partly-cloudy-night
65°/68°-
4
2022
cloudy
59°/60°-
7
2021
partly-cloudy-night
66°/69°-
4
2020
clear-night
45°/46°-
9
2018
partly-cloudy-night
53°/56°-
9
2017
cloudy
53°/55°-
10
2016
cloudy
67°/70°-
4
2014
partly-cloudy-night
61°/64°-
6
2013
cloudy
70°/71°Moderate
4
2012
rain
57°/59°Light
7
2011
clear-night
48°/49°-
9
2010
cloudy
43°/44°-
9