Jupiter Ridge Sand Spur

Jupiter Ridge Sand Spur : December 27, 2025, Jupiter, FL

The event takes place at Jupiter Ridge Natural Area near 1800 South US Highway 1 in Jupiter, Florida. Entry is limited to 80 runners. The event uses professional chip timing and offers participant swag, finisher medals, and custom awards including hourglass awards for top finishers. Registration closes December 23, 2025.

Distances

• Lunacy 30k Night Run - 30k night race on four 4.5 mile loops
• Lunacy 50k - combination of the daytime half marathon and the 30k night run
• Lunacy 50 Miler - daytime 50k plus the 30k night run
• OG 50k - daytime 50 kilometer race
• OG Half Marathon - daytime half marathon

Course, environment, and logistics

The course runs on the sand dunes and rolling scrub of Jupiter Ridge Natural Area, an approximately 270 acre site of Florida Coastal Scrub habitat and some of the oldest sand dunes in the state. The Lunacy 30k includes about 1,000 feet of climbing for its loops. The 50k totals about 2,000 feet of gain, and the 50 miler combines those distances to about 3,000 feet of gain. The half marathon has about 800 feet of gain.

Aid and support include two aid stations - one at the start/finish and one near 2.25 miles into the loop - so runners are never more than 2.25 miles from aid. A single labeled drop bag is allowed at start/finish and is accessible after each loop. The race coordinates with Palm Beach County Natural Areas management to limit impact on the site. Visit the organization's website for the most recent information.