Jacksonville Marathon

Jacksonville, FL, USA · December 12, 2026·
partly-cloudy-day55°·64° high·Breezy·Dry
7
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Jacksonville Marathon race day weather

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

Mild start, steady finish

Runners will face temperatures rising from 55°F at the start to 64°F by the finish, with humidity at 73%. A light north wind will provide a headwind during tough segments, particularly from miles 2 and 18 to 22. It’s advisable to maintain a conservative pace early on, especially during the headwinds, and stay hydrated throughout the race.

Race day forecast available in 14 days
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Pace Calculator

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Race Plan

Get your personalized Jacksonville 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

About the Jacksonville Marathon

The Ameris Bank Jacksonville Marathon & Half Marathon course is USA Track and Field certified, flat, fast and very scenic with 85% shade. There are no steep hills, bridges or overpasses. The course starts at Bolles School on San Jose Blvd. heads north, then south to Mandarin, does a loop and heads back along the St. Johns River to Bolles. Water & Electrolyte stations are located about every two miles. Clocks and mile markers at every mile. The 5K runs the first 5K of the marathon course and finishes on San Jose in front of The Bolles School. Source

Race weekend

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

Jacksonville Marathon FAQ

When is the 2026 Jacksonville Marathon?

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

Is the Jacksonville Marathon a Boston Marathon Qualifier?

Yes, the Jacksonville Marathon is an official Boston Marathon qualifier.

What is the time limit for the Jacksonville Marathon?

The time limit for the Jacksonville Marathon is 6 hours.

What will the weather be like for the 2026 Jacksonville 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 marathon race plan.

What is the weather usually like for the Jacksonville Marathon?

Over the 14 years racecast.io has race-day weather for (2010 to 2025), it averaged 57°F at the start and 63°F by a typical finish. Rain fell during race hours in 2 of those years (2012 and 2013).

What was the hottest Jacksonville Marathon?

Of the 14 years on record, 2016 was the warmest, reaching 76°F during race hours. The coldest start was 2010, at 44°F.

What was the windiest Jacksonville Marathon?

Of the 14 years on record, 2024 was the windiest, with wind averaging 14 mph during race hours. The calmest was 2025, at 2 mph.

Jacksonville Marathon weather history

Based on 14 years of data
Avg Temp
59°F
L:56° H:63°
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°/65°-
9
2024
partly-cloudy-night
59°/71°-
5
2023
partly-cloudy-night
65°/74°-
4
2022
cloudy
59°/61°-
6
2021
partly-cloudy-night
66°/69°-
4
2020
clear-night
45°/49°-
9
2018
partly-cloudy-night
53°/60°-
8
2017
cloudy
53°/55°-
10
2016
cloudy
67°/76°-
3
2014
partly-cloudy-night
61°/68°-
5
2013
cloudy
70°/71°Moderate
3
2012
rain
57°/68°Light
6
2011
clear-night
48°/53°-
9
2010
cloudy
43°/45°-
9