Mt. Umunhum Ultras

Saturday, June 8, 2024 San Jose, CA

Prepare to embark on an exclusive trail racing experience like no other – the Mt. Umunhum Ultras! This event is not just a race; it’s an adventure, a journey through the wonders of nature and the trials of endurance.

As the sun rises and paints the Santa Clara Valley with its golden hues, trail running enthusiasts gather for this extraordinary event. Whether you’re an experienced ultrarunner or someone seeking a taste of the epic adventure, Mt. Umunhum has something special to offer. With a variety of distances and start times, there’s a trail run for everyone, and each promises unforgettable moments in the great outdoors.

The crown jewel of this event is the 52-mile race, a true ultra that will test even the most seasoned runners. With over 15,000 feet of elevation gain, you’ll traverse a landscape of diverse beauty. The course winds through mystical oak forests, endless meadows, and steep climbs. It takes you on a journey through the Santa Clara Valley, Sierra Azul Open Space Preserve, and the rugged terrain of the Santa Cruz Mountains. This ultra is not for the faint of heart; it’s for those who dare to dream big, push their limits, and discover their true potential.

For those who crave adventure but prefer a more manageable challenge, the 50K race offers an exciting opportunity to experience the magic of the trail without the extreme distance. This race, too, presents its own set of climbs, descents, and the beauty of nature all around.

The Mt. Umunhum Ultras are more than just races; they are a chance to connect with the essence of trail running and discover the wild beauty of the Santa Clara Valley. The course will lead you through rugged trails, shaded by ancient oak forests, and then through expansive meadows where the sun will warm your journey.

As the day unfolds and the elevation gain adds to the challenge, the sense of accomplishment becomes immeasurable. The friendships forged on the trail, the stunning vistas, and the feeling of truly being alive are the real rewards of this trail racing experience.

So, whether you’re aiming to conquer the 52-mile ultra or a more manageable distance, Mt. Umunhum Ultras promise an unforgettable day in the great outdoors. Be prepared for adventure, the thrill of the trail, and a true sense of accomplishment. We look forward to welcoming you and sharing the beauty of the Santa Clara Valley, one trail step at a time.

Race Weather & Climate

San Jose, California, leads the way in technology and innovation.

June 8th in San Jose, CA welcomes the early days of summer with average high temperatures of 78-82°F and average low temperatures of 54-58°F. The weather is warm and pleasant, signaling the onset of the summer season. Rainfall during this time is typically minimal, creating a dry and enjoyable early summer ambiance in the city.

Mt. Umunhum Ultras Race Results

Mt. Umunhum Ultras Course Map

See the race route map for the Mt. Umunhum Ultras course map here.

Starting Time

The half marathon start time is 8:00 AM.

The time limit for the half marathon is 4.5 hours.


To reserve your spot in the 2024 Mt. Umunhum Ultras, you can use the registration link here.

Race Fees

  • There is a $85 ($90 after Jan 31) fee for the half marathon.
  • There is a $130 ($135 after Jan 31) fee for the trail marathon.
  • There is a $170 ($175 after Jan 31) fee for the 52 Miler.
  • There is a $140 ($145 after Jan 31) fee for the 50K.
  • There is a $120 ($125 after Jan 31) fee for the 30K.
  • There is a $75 ($80 after Jan 31) fee for the 9 mile.
  • There is a $65 ($70 after Jan 31) fee for the 10K.
  • There is a $55 ($60 after Jan 31) fee for the 5K.

Mt. Umunhum Ultras Race Website

Mt. Umunhum Ultras Website

See more races in: June, California