Rim Rock 50 Mile Trail Challenge

The inaugural Pena Passage, Lagoon Valley's Trail Race, presented by Altra, promises runners and hikers of every stride and skill level a scenic and adventurous trail race. Set against the stunning backdrop of Lagoon Valley Park’s rolling hills, shimmering lagoon, winding single-track trails, and fire roads, this event offers three distinct distances to challenge and delight participants.

The 5K course weaves through gentle terrain, ideal for first-time trail runners with some adventurous single track included, families, and those looking for a fun yet invigorating run or hike.

In contrast, the 10K route introduces slightly more rugged sections and elevation, testing endurance while rewarding runners with sweeping views of open grasslands and shaded oak groves.

For seasoned trail enthusiasts seeking a true test of resilience, the 30K distance presents every challenge of the 10k route but times three! Runners will traverse a mix of technical trails, climbs, and descents that showcase the park’s natural beauty and varied ecosystems.

Each course is thoughtfully marked and supported, with aid stations positioned to keep athletes hydrated and motivated. The following is a list of some of the foods and beverages each aid station may provide: Electrolyte drink, Energy gels, chews, pretzels, Oreo cookies, water, M&M’s, bananas, and watermelon! Whether competing for personal bests or simply soaking in the camaraderie of the trail running community, participants will find the Pena Passage, Lagoon Valley's Trail Race an unforgettable experience that celebrates both the spirit of competition and the tranquility of nature.

The Kids Fun Run at the Pena Passage a Lagoon Valley trail race is all about smiles, movement, and big finish-line energy. Young runners dash up the scenic trail with cheers from parents and volunteers echoing through the route. It’s a short, playful race that celebrates effort over speed and confidence over competition. Every kid leaves feeling like a champion—and usually asking when they can do it again.

Our race shirts are long sleeve tech tees to shield you from the elements all year long. With sun defense, moisture-wicking technology and comfortable fit, it fits the needs of every athlete. To be guaranteed a shirt and shirt size, you must register by May 15, 2026.

We are partnering with NAMI Solano County - a local mental health service charity.

Interested in being a sponsor or vendor? Email Ivette at [email protected]

Start times

30K 7AM

5K, 10K 8 AM

Kids Run 9:30 AM

This will be a fun 5K looping course beginning and ending at Newhall Park near the playground. There will also be a FREE kid's (7 and under) 400m fun run after the 5K run! Age group awards (medals) will be given to top three runners in each age group. T-Shirts guaranteed for pre-registered runners up to a 6/6/26 cutoff date, first come first served for race day registration if we have extras. The registration you pay will go to the Clayton Valley/Concord Sunrise Rotary Club, as well as the PFCs for both Mount Diablo Elementary and Diablo View Middle School. Please check out our Clayton Valley/Concord Sunrise Rotary Club at https://claytonvalleyrotary.org/

Packet Pickup:

Packet pickup will be on Saturday 6/20 at Sports Basement in Walnut Creek from 2pm to 5pm. Race registrants will be able to purchase goods at Sports Basement for a discount of 20% during this time! Please try to pick up your packet during this time to make the process more smooth the day of the race. If you can't make it on the 20th, you can get there early on the 21st to pick up. Thank you!

Sponsors:

Jeff Wilson, Broker Associate - Keller Williams Realty - Assisting real estate buyers and sellers since 2005! www.collmerwilson.com

Torsten Jacobsen

About our Rotary Club:

The Rotary Club of Clayton Valley/Concord Sunrise was chartered in May 1987 and locally serves the City of Clayton and the Clayton Valley area of Concord. The club is involved in many projects around the world but also has projects that are important in the local community as well.

The list below will give you an idea of some of the local projects that we are involved in. We also have some regional and several international projects as well. If you are interested in getting involved in a fun loving group that enjoys helping others Rotary might be for you. Our Club President, Secretary and the entire club invite you to come visit us...

Adopt-A-Family Program - Our club supports several needy families with gifts and food items for the Christmas holidays.

Camp Royal (youth leadership) - Camp Royal is located in the Trinity Alps near Hayfork, CA. It is a week long, summer camp, leadership training experience for juniors (to be seniors) high school students. It invites several motivational speakers and community leaders to speak and teach during the week. Speakers are flown in and out of the Hayfork airport by volunteer Rotarian pilots.

Camp Venture (business/entrepreneurship) - Camp Venture is a 4 day, summer camp, entrepreneur experience for juniors (to be seniors) high school students. It is designed to help teach the students how to run their own businesses after graduation. It is held at a Bay Area educational facility.

Clayton Library Foundation - Each week the regular speakers at our club sign and donate a book that is donated to the Clayton Library in lieu of a speaker’s gift. The club provides the books at the direction of the Clayton librarian then completes the process by giving the book to the library.

Junior Optimist Baseball League - We donate money to the league and they provide surplus or out dated equipment and uniforms that we in turn donate to our Twin Club project in San Felipe, Baja, Mexico.

Local Park Programs and Street Improvements - We are working with the City of Clayton to repair and update the Clayton Community Park and the work there should be done soon! Markham Park, Concord, is a 4 year old environmental project where we help restore the plants and the grounds in the gardens of Markham Park, Concord’s arboretum by the donation of labor and money.

Via Concord’s “Adopt-A-Block ” program, we do litter pick up on Clayton Road between Ayres and Ygnacio on a quarterly basis.

We have “adopted” the Cabin Trail in Mt Diablo State Park and provide routine maintenance on a regular basis.

Rotary International Polio Eradication Program - Since its beginning in 1987, our club has been donating to The Rotary Foundation for the world-wide eradication of Polio. Each member has pledged to donate as least $100 a year and so far has donated over $145,000. We are nearing our goal!

International Vision Volunteers - Support of a Rotarian run Eye Hospital in Zambia, Africa treating thousands of eye patients annually.

Adopt-A-Village Project - Since 2011, the Rotary Club of Clayton Valley/Concord Sunrise and three Ugandan clubs have adopted a village--the 2,500 residents of the Nsawo Village. Through a series of Rotary global grants and district grants to establish and sustain health and education programs, as well as the construction of a pediatric clinic.

San Felipe, Baja Mexico - We've partnered with our twin club to establish and support a cancer screening clinic and hospice. Thousands of local men and women have used the screening facility over the years. In addition, we have provided scholarship support for high school students to help further their education