Jupiter Ridge Sand Spur
Jupiter, United States • 27 Dec 2025
Event overview
The Jupiter Ridge Sand Spur takes place in Jupiter, Florida on Saturday, December 27, 2025. Distances offered include daytime and night options and combinations:
- Half Marathon
- 50K (daytime)
- Lunacy 30k Night Run
- Lunacy 50k (half marathon plus night 30k)
- Lunacy 50 Miler (day 50k plus night 30k)
Entry is limited to 80 runners for this edition. Registration closes on December 23, 2025.
Course and environment
The course uses loops on the Jupiter Ridge Natural Area, a coastal scrub habitat on ancient sand dunes. The night 30k consists of four 4.5-mile loops totaling about 18 miles and about 1,000 feet of climbing. Reported elevation gain figures include about 800 feet for the half marathon, about 2,000 feet for the 50K, and about 3,000 feet for the 50 Miler. Mount Ridge, a dune on the site, is reported as 49 feet above sea level. Jupiter Ridge Natural Area is managed by Palm Beach County and contains rare Florida Scrub habitat; the site is described as one of the remaining stands of this ecosystem.
Logistics and support
The event provides two on-course aid stations: start/finish and a station near the 2.25-mile mark. Drop bags are allowed at the start/finish area (one small bag per runner), accessible after each loop. The race is chip timed by A1/Trailhead Ultras. The organizer offers a refund and race-credit policy with a full refund (minus processing fee) available through October 1, 2025, and other options thereafter. Visit the organization's website for the most recent information.