Fall is when New Jersey earns its reputation as one of the best places in the country to run 13.1 miles. The leaves turn, the humidity finally lets go, and race weekend suddenly feels like something you look forward to instead of survive. There are 9 upcoming half marathons in New Jersey in this window, and the four below cover a lot of ground — a college town classic, a boardwalk blowout, a small-town main street, and a vineyard run that ends exactly how you'd hope.
If you've been circling a fall race and haven't committed yet, this is your nudge. Fall halfs fill up, and the good ones fill up first.
2026 HiTOPS Princeton Half Marathon — Princeton, Sunday, November 8, 2026
Princeton has quietly become one of the most respected half marathons in the state, and it shows in the numbers: a quality score of 94 out of 100, the highest of any race on this list. You get a fall morning in a town built for it — tree-lined streets, campus architecture, and crowds that actually come out to cheer. November 8 lands right in the sweet spot where the air is crisp but the roads are still fast. If you're chasing a personal best or just want your fall race to feel like an occasion, start here.
AmeriHealth Atlantic City Marathon, Half Marathon, 10K & G. Larry James 5K — Atlantic City, Saturday, October 17, 2026
A half marathon with an ocean on one side and the boardwalk under your feet is a different kind of race day. Atlantic City scores 85 out of 100, and the setting does a lot of that work — you're running through a resort town in October, when the crowds thin out and the weather turns runner-friendly. The weekend also includes a marathon, a 10K, and the G. Larry James 5K, so it's an easy one to turn into a family or friend trip. Flat, fast, and a little bit loud in the best way.
Main Street Half Marathon & 4 Miler - Hunterdon — Clinton, Sunday, October 18, 2026
One day after Atlantic City, New Jersey gives you the opposite experience. Clinton is small-town New Jersey at its most photogenic, and the Main Street Half leans into that — a 78 out of 100, with a 4 miler on the same morning if you're bringing someone who isn't ready for 13.1 yet. This is the race for runners who'd rather have a quiet, scenic morning than a big-city production. Back-to-back with Atlantic City, it's also a sneaky option for a fall double if your legs are feeling brave.
Run the Vineyards - Cork High & Bottle Deep - Half Marathon — Williamstown, Sunday, November 15, 2026
Some races you run for a time. This one you run for the finish line. Run the Vineyards brings its half marathon to Williamstown on November 15, scoring 77 out of 100, and the whole point is the setting — vineyard views, a relaxed field, and a post-race atmosphere that understands why you got up early. It's a week after Princeton, so if you want one more fall race before winter closes in, this is a genuinely fun way to spend a Sunday.
How to Pick Your New Jersey Fall Half
A few honest questions to sort these four out:
- Do you want a fast, big-day race? Princeton on November 8 is the strongest pick on the board.
- Do you want scenery and atmosphere over speed? Atlantic City's boardwalk or Williamstown's vineyard will both deliver.
- Do you want small-town charm? Clinton on October 18 is your race.
- Do you want to double up? Atlantic City and Clinton fall on back-to-back days — October 17 and 18.
Whether this is your first half or one of many, New Jersey in October and November is a great place to be a runner. The weather cooperates, the courses are varied, and there's a race here for basically every kind of runner you happen to be this season.
See All the Upcoming Half Marathons in New Jersey
These are four of the 9 upcoming half marathons in New Jersey in this window — and fall isn't the only season worth planning for. Browse the full calendar, filter by what matters to you, and find the race that fits your fall, your winter, and whatever comes after.
See all half marathons in New Jersey →
Start with your first 13.1. Stay for the journey after that.