Mt. Umunhum Ultras

June 7, 2025
San Jose
Trail
Distances
Marathon, Half-Marathon
Starting Time

8:00 AM

Fees

$170+

Perfect For

Ready to sign up?

1-100
Challenging
Mountain Views
High: 84°
/ Low: 58°

The Mt. Umunhum Ultras in San Jose, CA combine nature and the trials of endurance.
This 52-mile race, with over 15,000 feet of elevation gain, will test even the most seasoned runners.
The course winds through forests, meadows, and along steep climbs through the Santa Clara Valley, Sierra Azul Open Space Preserve, and Santa Cruz Mountains.
A more manageable challenge is available through the 50K race, though it also includes climbs and descents.

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.
Overview
The Mt. Umunhum Ultras in San Jose, CA combine nature and the trials of endurance. This 52-mile race, with over 15,000 feet of elevation gain, will test even the most seasoned runners. The course winds through forests, meadows, and along steep climbs through the Santa Clara Valley, Sierra Azul Open Space Preserve, and Santa Cruz Mountains. A more manageable challenge is available through the 50K race, though it also includes climbs and descents.
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.

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Mt. Umunhum Ultras Course Map

Distances
Marathon, Half Marathon
Starting Time

8:00 AM

Fees

$170+

Perfect For

Ready to sign up?

Train with Runna

Use code HALF for 2 weeks FREE

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