Jupiter Ridge Sand Spur

The 2026 Christmas Edition!

The 2026 Sand Spur will be a Christmas-themed extravaganza complete with holiday treats and goodies at the aid stations, Christmas themed awards, and oodles of sparking white sand you can pretend is snow as you grit your way through one of the prettiest and challenging trail races in Florida! Wear your most festive running gear as we celebrate 10 years of fun in the sandbox!

3 distances to choose from!

We’re going to make picking your distance easy this year as we offer our original 50k, the popular half marathon, or the 30k night race! The 50k is 7 loops on our 4.5 mile course and starts at 7 a.m. with a 9 hour cutoff. You’ll get around 1,400 feet of elevation gain using every permissible trail in Jupiter Ridge including the iconic Trident dunes and the sand pine Tunnel of Love. You’ll also get a clear view of the Intracoastal Waterway with each loop! The half marathon uses the same course with only 3 loops, and the start time is 9 a.m. with a 5 hour cutoff and approximately 600 feet of elevation gain/loss. The 30k night race is 4 loops and starts at 6 p.m. with a relaxed 6 hour cutoff. You’ll have until the clock strikes midnight to finish your race!

Run the ancient dunes!

The story of this ultramarathon began during the last ice ages. On the Florida peninsula, sandy hilltop island and coastal dune ridges were the only lands peeking above sea level over 2 million years ago. Then the seas fell, leaving the flat, broad finger of land we now know as Florida. These ancient sand dunes are known as one of the rarest living communities: Florida Scrub. Jupiter Ridge Natural Area is one of the last stands of Florida Scrub habitat in Palm Beach County. Only 2% of original Scrub in the county and less than one-third of the original Scrub in the state remain today. A gently rolling landscape of prickly, dense thickets spotted with bare patches of sparkling white sand, these 270 acres are protected by Palm Beach County as part of a countywide system of natural areas. Over 200 species of plants and animals call this home. Lightheartedly called “ the Death Valley of Palm Beach County”, in fact, this natural area is full of life with an amazing variety of plant and animal species - some found to exist nowhere else in the state. The Scrub habitat of Jupiter Ridge Natural Area is among the harshest environments, and the slowest to regenerate if damaged. It’s also some of the oldest living stands of Florida landscape; you’ll be running on ancient sand dunes millions of years old. It’s for this reason we have a runner cap of 80 runners this year. We are continually working with Palm Beach County Environmental Resources Management to bring this race to fruition while preserving the integrity, and protection, of the natural area. Jupiter Ridge Sand Spur was the first and only outside entity to be permitted a running event in a Palm Beach County natural area with our 2017 inaugural race. We are tremendously proud of that, and will continue to work closely with them to ensure responsible execution and growth of this race. These natural areas are managed by the Palm Beach County Environmental Resources Management team, and we are tremendously fortunate to be working with them to make this race a reality.

What so special about this race?

Now in our 10th year, we’ve enjoyed sold out races from the beginning thanks in part to our small entrants cap and high demand for Winter ultras in Florida. We have been able to welcome folks from all over the US, Canada, and overseas to introduce them to one of Florida’s hidden treasures; the Florida Coastal Scrub. Why is the entrants cap small? Why just 80 participants this year? From its inception, we’ve worked diligently with Palm Beach County Environmental Resources Management to bring competitive trail running to the Natural Area setting. Our inaugural year was a “test” year of 20 lucky participants for our 50K. The process was closely monitored by the county before, during, and after the race to determine the effects of trail running impacts on environmentally sensitive grounds. We are proud to say we’ve been able to boost our numbers through the care of our runners who share our vision of appreciation and promotion of these amazing lands. Jupiter Ridge Natural Area is a coastal scrub environment, one of the rarest and slowest to rebound if damaged. It is home to 31 plant species and 14 animal species considered to be threatened, rare, or of special concern. Though it looks like a bit like a piece of Death Valley dropped into Palm Beach, it is in fact teaming with life. This 270 acre site, wedged between the Atlantic Ocean and the Intracoastal Waterway, is also home to some of the oldest living sand dunes in Florida. These dunes, also the highest natural points in Palm Beach County, have remained largely unchanged for over 2 million years. What makes this race so special is the both the rarity and beauty of it. Then add the challenge of the sand and the dunes, and it’s absolutely magical. Despite its challenge, it makes a great first ultra with a relatively small loop of just shy of approximately 4.5 miles! Make no mistake; this is not an easy race. It’s a race to train specifically for and to respect the course. The sand can be deep and brutal at times, but the course has been designed carefully and thoughtfully to offer sections of respite. Just when you think you can’t possibly run in sand for one second longer, you’ll be treated to a firm area for a bit of rest. We’d love to welcome you to sunny Jupiter Florida for our 10th installment of our flagship race! It fills up quickly, so don’t dilly-dally if you think you want to run it!

New, EZ Refund Policy!

Register with confidence! You are entitled to a FULL refund, minus the Ultrasignup fee, for any reason, until October 1st, 2026. Or a partial refund during October through November (to be determined based on when you cancel within the month of November) because we will then be spending your money on swag and supplies. Or a full race credit (rollover, deferral, etc) with no expiration date and totally transferable if you cancel on or after December 1st, 2026. You can also choose to submit your forfeited race fee as a donation to the Palm Beach County Natural Areas Program! We’ll work with you! *If the event is canceled or postponed due to natural disaster, pandemic, site closure, dogs and cats falling from the sky, etc, we will roll everyone over into the new date should that happen.

South Florida Elevation?

Florida is notoriously flat, and south Florida is about as flat as it gets. Runners have to resort to bridge repeats, landfills, and stairs to get any decent elevation training. Jupiter Ridge Natural Area is home to some of the tallest natural sand dunes in Palm Beach County, and one “peak” in particular is the highest natural point in the county! Affectionately called Mount Ridge, a massive dune stands a jaw-dropping 49 feet above sea level! You’ll summit Mt. Ridge twice per loop from four different directions, and that combined with the other smaller dunes and rollers, you’ll get about 1,400 feet of gain for the 50K, and 600 feet for the half marathon! We are proud to be the only ultramarathon in south Florida to boast such “lofty” numbers!

Awards galore!

This is one of the swaggiest trail ultra around! Every finisher gets a badass finishers medal, and top overall winners receive our coveted custom-made hourglasses to pay homage to your battle against sand and time! You can expect the amazing Brie from Wicked Skins to, once again, raise the bar with the creativity and craftsmanship of our awards for both every finisher, and exclusive awards for top finishers and DFL’ers!

Other deets!

Drop downs: drop downs will not be allowed on race day, or during the race. If you wish to drop down, or drop up, you’ll need to join that distance’s waitlist, so essentially you either finish or DNF the distance you decide on, as distance changes are incredibly unlikely as the race draws near. Refunds: your registration fee goes toward putting on a remarkable race with tons of cool stuff. We begin this process early on. We also strive to make a considerable donation to Palm Beach County Environmental Resources Management’s Natural Areas program which helps maintain these amazing places. Your registration fee is 100% refundable (minus the Ultrasignup fee) by October 1st. After that, we will allow you to roll your registration over to next year’s event, or transfer it to one of our other races such as The Trident or Hungryland! Or, you can let us know you’d like it to be a donation to PBCERM and we’ll donate it to the Natural Areas program! If the race is canceled due to site closure, natural disaster, pandemic, wildfires, monkeys falling from the sky, etc - mass refunds will not be made available. Instead, a new date and/or race location will be announced and all participants will be moved to the new event. By registering for this race, you agree to these terms. 100% of surplus and proceeds will go to PBCERM’s Natural Areas program. Drop bags and aid stations: the start/finish area will have a drop bag zone. You’ll be permitted one small duffle or tote, or a small cooler, if you wish. It must be clearly labeled with your name and bib number. You’ll have access to your stuff each time you finish a loop. We’ll also have two aid stations on the course: one at the start/finish, and one around the 2.25 mile mark of the loop. It’s entirely possible to complete this ultra with simply a handheld bottle. You’ll never be more than 2.25 miles from aid. This race will be professionally and accurately chip timed by the one and only Justin Radley at Trailhead Ultras!