Is the Jacksonville Marathon a Good BQ Course?

Published November 10, 2026 · Estimates, updated each registration cycle

Short answer: yes. The Jacksonville Marathon is one of the better under the radar Boston qualifiers in the country. The course is flat, USATF certified and largely shaded, with no bridges or overpasses, and the December date usually brings cool Florida mornings. The 2026 edition runs on Saturday, December 12, starting at The Bolles School on San Jose Boulevard. A finish there falls inside the Boston 2028 qualifying window, which opened on September 19, 2026, so it is used when you apply in September 2027.

The course

Jacksonville is about as kind as a road marathon gets on paper. There are no real hills, no bridge climbs, which is unusual for a city built on the St. Johns River, and a lot of tree cover through residential neighborhoods. That shade matters in Florida: even on a cool morning the sun can warm the last hour quickly, and a shaded road keeps your heart rate honest late in the race. Because the profile is flat, the net elevation change is tiny and nowhere near the 1,500 foot line where the B.A.A. adds a downhill adjustment, so your time counts exactly as you run it.

Weather: the real variable

Mid December in northeast Florida is usually mild, with start temperatures often in the 40s or 50s. That is good marathon weather, but it is not guaranteed. A warm, humid front can push the morning into the 60s, and every few degrees above about 55 costs most runners time in the second half. Plan a pacing range rather than a single number, and decide before race week how much slower you will start if the forecast turns warm.

Field size and pacing

This is a local, runner run event rather than a big city spectacle. That means an easy race morning, short lines and quick access to the start, but also smaller packs in the second half. If you rely on a group to hold pace, expect to run stretches alone after halfway. Runners who pace well by feel and by watch tend to like Jacksonville; runners who need crowds and bands for energy may prefer a bigger race such as CIM. Our CIM review covers that trade off.

How it compares with other December qualifiers

Jacksonville shares its weekend with Kiawah Island, which is similarly flat but more exposed to coastal wind, and sits a week after CIM. If you want flat roads and shade, Jacksonville is the stronger pick of the two southern options. If you want the deepest field of fast qualifiers, CIM is still the default. The full comparison is in our guide to the best December marathons for a BQ, and the Kiawah details are in is Kiawah Island a good BQ course.

The number to aim at

The 2027 Boston race cut at 5:17 under the standard, and the 2028 cutoff is not known yet. So the target below is a planning number, not a forecast. A 42 year old woman has a standard of 3:35:00. With a planning buffer of 6:00, she would aim for about 3:29:00 in Jacksonville. Targets for every age group are in what time you need for Boston 2028.

Verdict

If your training has gone well and you want a calm, flat, shaded race in December, Jacksonville is an excellent place to chase a Boston qualifier. Just treat the weather as the one thing you cannot control and pace for the morning you actually get. Before you pick a goal, put your age, gender and target time into the cutoff predictor to see how that buffer would have done against every real Boston cutoff since 2014.