Jacksonville Bank Marathon
Monday, February 8, 2027
Elevation Gain
15m
Elevation Range
10m
Avg Temperature
55°F / 13°C
Course Profile
flat
Course Map & Elevation
This route is generated and may not follow the exact official course.
Course Overview
One of the flattest marathon courses in the United States with an elevation range of just 2-12m, winding through Jacksonville's scenic riverside neighborhoods of San Marco, Riverside, and Avondale along the St. Johns River waterfront. The loop course with out-and-back segments is dead flat, making it an outstanding choice for BQ attempts, but December humidity and late-race sun exposure are the variables that separate good races from great ones.
Key Segments
Downtown to San Marco and Riverside
Terrain: Flat riverside streets, 3-12m elevation, tree-canopied neighborhood roads
Challenge: The flat, shaded early miles with cool morning temperatures create a false sense of ease that invites going out too fast
Tactic: Run 5-10 sec/km slower than goal pace. The shade and cool air will not last — bank restraint for the exposed second half.
Avondale Loop and First River Stretch
Terrain: Flat, 3-10m elevation, oak-lined residential streets transitioning to open riverfront road
Challenge: Wind off the St. Johns River can funnel along the river corridor, and December crosswinds are unpredictable
Tactic: Settle into goal pace. Practice relaxed form into any headwind. Take gel by km 18-20 before the second half.
Second Loop: Riverside Avenue and River Panorama
Terrain: Flat, 3-12m elevation, long riverfront stretches with gradually increasing sun exposure
Challenge: The sun rises and humidity builds through the second half — combined with the flat terrain offering no muscular relief
Tactic: Hydrate aggressively at every station. Shift to effort-based running if temperature rises above 18°C. Use the km 27 Five Points crowd support.
Downtown Return and Waterfront Finish
Terrain: Flat, 2-8m elevation, urban streets returning along the river to the stadium finish
Challenge: Limited shade near the waterfront finish area and cumulative heat exposure can cause dramatic late-race fade
Tactic: If you managed heat and hydration, press from km 37. The crowd builds along the downtown corridor. Finish strong along the St. Johns River.
Race-Specific Training
- •Train in humid conditions whenever possible — even December in Jacksonville brings 60-75% humidity that significantly increases sweat rate compared to dry-air equivalents
- •Practice sustained flat-road marathon-pace runs of 25-32km to build the neuromuscular endurance for relentless flat running without terrain variety
- •Develop a proactive sodium and electrolyte strategy through hot/humid long run experimentation — do not rely on thirst alone in Florida humidity
Conditions & Environment
Altitude
Entirely at sea level (2-12m). No altitude concerns.
Weather
December race. Typical start temperatures 10-15°C (50-59°F), rising to 18-20°C (64-68°F) by finish. Moderate to high humidity even in winter.
Sun & Wind
Morning shade in tree-canopied neighborhoods gives way to open river exposure in the second half. December river winds are variable — headwind possible along the St. Johns corridor. Finish area has limited shade.
What to Wear
Singlet and shorts for most conditions. Light-colored fabrics preferred. Hat or visor essential for sun management in the second half.
Pacing Strategy
| Segment | Pace | Note |
|---|---|---|
| km 0-10 | 5-10 sec/km slower than goal pace | Shaded cool miles. Bank restraint for the warmer, exposed second half. |
| km 10-21.1 | Goal pace | Settle into rhythm. Manage any river wind by effort, not pace. |
| km 21.1-33 | Goal pace (adjust for heat if above 18°C) | Hydrate at every station. If temps climb, shift to effort-based and accept slower splits. |
| km 33-42.195 | Goal pace or faster | Patient runners accelerate here. Use downtown crowd energy for a strong waterfront finish. |
Race Day Tip
The combination of humidity and flat terrain makes Jacksonville a course where underfueling and under-hydrating are the biggest threats to a good race. Start taking fluids at the first aid station — not the third — and carry a gel for backup in case an aid station is crowded.
Race details subject to change. Verify with the official race website.
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