Jupiter Ridge Sand Spur

The Jupiter Ridge Sand Spur is a unique ultramarathon held in Jupiter, Florida, featuring challenging courses on ancient sand dunes within the protected Jupiter Ridge Natural Area. The 2025 event offers multiple distances including a 50K, half marathon, and the special "Lunacy" series combining day and night runs: a 30k night run, a 50k (half marathon plus night run), and a 50-mile race (50k plus night run). Runners tackle loops over rugged terrain with up to 3,000 feet of elevation gain on rare Florida scrub habitat.

The race is capped at 80 participants to protect the environment, with full support, chip timing, and distinctive awards celebrating the tough, scenic course. Visit the organization's website for the most recent information.