NYC Parks Winter Series - Polar Bear Half Marathon & 5K

The Polar Bear Prospect Park Half & 5K is the fourth stop in NSRF's NYC Parks Winter Series, a midwinter test on the roads of Brooklyn's Prospect Park. With typical race-day temperatures hovering between 24 and 37°F, this is a race for runners who don't mind a little frost on their gloves. The course stays entirely on paved park roads, and with negligible elevation gain, it's as flat and fast as they come—a genuine PR opportunity for those willing to toe the line in January.

The field is small, around 53 finishers in recent editions, giving the race an intimate, low-key feel. The winning time hovers near 77 minutes, so the front is honest but not overwhelming. With only about 6% of runners returning in later years, it's a hidden gem for those seeking a no-frills winter half in the city. The setting—Prospect Park's 526 acres of meadows and woodlands—offers a surprisingly scenic backdrop for a winter road race, with the park's gentle curves and tree-lined paths providing a welcome distraction from the chill.

Expect a straightforward, well-organized event with the focus squarely on the run. The finish brings a modest but satisfying reward: a finisher's medal and the satisfaction of conquering a winter half in the heart of Brooklyn.