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SPACEROCK: the final trail running frontier.
These are the voyages of trail runners around the world.
Your mission: to explore strange new trails, to seek out new life and new experiences, to boldly run where no one has run before.



Experience running the exotic trails and sights of the world-famous Vasquez Rocks Natural Park in Southern California. Known as the backdrop from popular TV shows and movies including Star Trek, The Flintstones, Battlestar Galactica, Planet of the Apes, and many classic western films. Now get a spectacular experience running the trails at the SPACEROCK Trail Race!


Vasquez Rocks feature unique rock formations, canyons, and terrain that feels like you are running on an alien planet. The trails provide a variety of technical terrain from packed dirt, sandy creek beds, rocks, and boulders as you traverse the course.


The 5K & 10K loop takes runners around the trails inside Vasquez Rocks with some moderate climbing and single-track trails. Ideal for first-timers, hikers, and those looking to elevate their trail running experience.

The 15K course provides a more intermediate to advanced runner challenge with a huge mountain climb, more single-track trails trails on PCT, and the black hole tunnel.

The Half Marathon+ course is considered one of the toughest in California with over 3200 feet of elevation gain & descent, and the total distance coming in just under 14 miles. A course that many trail runners consider an Ultra Half.


Experience the darkness of running through the black hole tunnel for over 500 feet, taking Half Marathon and 15K runners to a new world to discover with spectacular sights while running the Pacific Crest Trail.


Choose a race distance that meets your goals or fitness level. Each course creates a full loop. View the course page for additional details.



According to past runners, we have some of the best aid stations in the industry. Not just the stations, but hands down the best SPACE CREW volunteers who take time to give back and make your race experience out-of-this-world.

We have 5 stations strategically positioned to provide the best support, depending on which distance you are running you'll hit 2 to 6 stations during your race.  Our stations keep runners fueled with water, electrolytes from our hydration sponsor Gnarly Nutrition, gels, chews, salt capsules, sweets, snacks, and more to keep you going strong from start to finish.

Not running the race? See how much fun it is to support the runners as a SPACE CREW volunteer!


When crossing the finish line you can always expect to receive a spectacular finisher medal. A medal that was custom designed to be fun, creative, and special just for the SPACEROCK Trail Race.  Every year our medals change, you won't get a boring generic medal here.

Top that with our iconic retro space bag, and finisher shirt, plus if you are a returning Legacy Club runner you'll receive a unique bonus item to commemorate your legacy status. Jump over our Swag page to view each year's medals and goodies. 

Race Details

Race Date

The race will be on Saturday, October 21st, 2023 with last-minute check-in starting at 5:30 AM and the first race at 7:30 AM after sunrise.

Early Check-In

Early check-in on Friday from 1:00 PM to 4:00 PM, location at race staging area by the start/finish line inside Vasquez Rocks Natural Area Park. Drive into the park and take a left at the stop sign and follow to the end.

Start Line

The start and finish line is located inside Vasquez Rocks National Park at 10700 Escondido Canyon Rd, Agua Dulce, CA 91350, park outside fo the park and walk or bus in to the race start line.


Participant Perks

  • Run Half Marathon+, 15K, 10K, or 5K
  • Collectible finisher medal
  • Prize for first place
  • Official race shirt
  • Official finisher certificate
  • Space "goodie" bag
  • FREE race photos
  • Space Crew support
  • Course aid-stations
  • Finish line water & food
  • Legacy gift for return runners
  • Special surprise*
  • Event insurance
  • An out-of-this-world experience

Race Day Schedule


Last minute check-in

7:30 AM

Half Marathon start

7:40 AM

15K start

7:50 AM

10K start

8:00 AM

5K start

What Runners Are Saying...

Caroline Castillo Shahin

Caroline Castillo Shahin

Avg. Rating | Distance Half Marathon | BIB 3026 | Year 2021

It is the toughest half marathon trail event. Aid stations at right point. Since I am back of pack, was good to have food. Terry, race director puts on a good event.

Ezra Weisz

Ezra Weisz

Avg. Rating | Distance Half Marathon | BIB 3107 | Year 2021

I absolutely LOVE Spacerock. Watching the sun rise at Vasquez Rock to start an amazing and difficult half Marathon course is addicting. I'll keep coming back. The vibe is out of this world.

Bill Bruce

Bill Bruce

Avg. Rating | Distance 5K | BIB 5173 | Year 2017

I run a lot of Obstacle Course and trail races. I Highly recommend the SPACEROCK Trail Race. I drove up from San Diego and the drive was worth it. Intimate, friendly atmosphere for the race. Stick around and “explore” after the race, you will be glad you did.

Run Long and Thrive

Trail Race Video Preview

2023 Race Entry


$145 Race Entry
  • Run Half Marathon course
  • Collectible finisher medal
  • Collectible finisher shirt
  • Collectible space bag
  • 6 course aid-stations support
  • Special award for 1st in Half
  • Out-of-this-world experience


$120 Race Entry
  • Run 15K course
  • Collectible finisher medal
  • Collectible finisher shirt
  • Collectible space bag
  • 4 course aid-stations support
  • Special award for 1st in 15K
  • Out-of-this-world experience


$95 Race Entry
  • Run 10K course
  • Collectible finisher medal
  • Collectible finisher shirt
  • Collectible space bag
  • 4 course aid-stations support
  • Special award for 1st in 10K
  • Out-of-this-world experience


$75 Race Entry
  • Run 5K course
  • Collectible finisher medal
  • Collectible finisher shirt
  • Collectible space bag
  • 2 course aid-stations support
  • Special award for 1st in 5K
  • Out-of-this-world experience

Race Day: Saturday, October 21, 2023

Register today to secure your spot, then start training for an out-of-this-world trail race!



We are currently accepting sponsors for the 2023 race, grow your business as a sponsor at the 7th annual SPACEROCK Trail Race!

Thank you to our 2022 sponsors for their amazing support to help make a spectacular race experience!

Run Long and Thrive