Races Marathon · Jacksonville, USA
Jacksonville Marathon
Jacksonville Marathon is a flat marathon in Jacksonville, USA, held each December. Flat, shaded Florida neighbourhoods in cool season — quietly quick. Mid-December is 7-18C. Flat courses like Jacksonville's reward metronomic pacing — the danger is going out faster than goal pace because it feels cheap early.
Last updated 2026-07-03 · confirm dates & entries on the official race site
When
December
every year
Course
flat
Marathon
Conditions
Mid-December is 7-18C.
Racing this course well
Flat, shaded Florida neighbourhoods in cool season — quietly quick.
Flat courses like Jacksonville's reward metronomic pacing — the danger is going out faster than goal pace because it feels cheap early.
Pick your goal for Jacksonville
Pace charts, weekly structure and timelines for the most common marathon goals:
Asked often
- When is the Jacksonville Marathon?
- It is held each December in Jacksonville, USA. Check the official Jacksonville Marathon site for the exact date and entry windows.
- Is the Jacksonville Marathon course flat?
- Flat, shaded Florida neighbourhoods in cool season — quietly quick.
- How should I train for the Jacksonville Marathon?
- Match your preparation to Jacksonville Marathon's profile and the December weather, then protect consistency — RunV's adaptive plan recalibrates after every run so one bad week never derails the block.
Not sure what to target? Predict your marathon time from a recent race →
More marathon races
Build for Jacksonville — around your actual life
RunV engineers your block backwards from race day in December — and rebuilds it every time training doesn't go to script.
