Jacksonville Marathon
Race Day Weather
Cool conditions, adjust for wind
Runners will face temperatures rising from 55°F at the start to 64°F by the finish, with humidity at 73%. A headwind will challenge runners during miles 2, 18, and 20-22, while tailwinds will assist from miles 4-6 and 9-14. Given the cool temperatures and moderate humidity, pacing adjustments may be necessary in windy segments to conserve energy.
Pace Calculator
Enter a finish time to see what race day does to it.
Get forecast alerts for Jacksonville Marathon
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
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 Info
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.