Montana de Oro Trail Run 50k 36k Half Marathon & 12k

Saturday, March 29, 2025 Los Osos, CA

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Welcome to the breathtaking “MdO Trail Run” – an adventure that will lead you through the stunning landscapes of Montaña de Oro State Park. Nestled just outside San Luis Obispo and Morro Bay in Los Osos, California, this coastal gem known as the “Mountain of Gold” awaits your footsteps.

The diversity of this coastal paradise will captivate your senses. From rugged, rocky cliffs to expansive coastal plains, sandy beaches, and meandering streams, this course offers a sensory feast at every turn.

Your journey begins and ends at the mesmerizing Spooner’s Cove Beach, a location of unmatched natural beauty. As you prepare to embark on this memorable adventure, you’ll have the choice of several race distances: 12K, Half Marathon, 36K, or the ultimate 50K challenge. Opt for the 50K and you’ll conquer “Three Peaks” – Hazard Peak, Valencia Peak, and Oat’s Peak.

This isn’t just a run; it’s an opportunity to trace the footsteps of the Chumash people on ancient trails. As you explore one, two, or all three peaks nestled amidst the flourishing flora, you’ll be treated to breathtaking vistas. Look out over the vast Pacific Ocean, the nearby pristine beaches, and the charming waters of Morro Bay.

Each step you take in the “MdO Trail Run” is a journey through time and nature. It’s a chance to connect with the rich history of this land and to savor the scenic beauty that unfolds before your eyes.

Whether you’re an experienced trail runner or someone seeking a new and exhilarating challenge, this event has something for everyone. It’s not just a run; it’s an exploration of California’s coastal wonders and a celebration of the great outdoors.

So, lace up your running shoes and get ready to embark on a trail run like no other. Montaña de Oro State Park, with its diverse terrain and epic views, welcomes you to the “MdO Trail Run” – a running experience that combines nature, history, and adventure into one unforgettable journey.

Race Weather & Climate

Los Osos, California, is a coastal community located in San Luis Obispo County, situated approximately 10 miles south of San Luis Obispo, the county’s largest city. Known for its scenic beauty and proximity to the Pacific Ocean, Los Osos offers residents and visitors a relaxed coastal lifestyle within reach of San Luis Obispo’s amenities. Its location on the Central Coast and its close proximity to San Luis Obispo make it a highly desirable destination for those seeking a tranquil coastal retreat with access to a nearby city.

On March 29th in Los Osos, CA, you can anticipate an average high temperature of around 60-65°F and an average low temperature of approximately 45-50°F. This date falls in early spring, with mild and warming weather. Rainfall during this time is generally minimal, with averages around 0.1-0.3 inches.

Montana de Oro Trail Run Half Marathon Race Results

Montana de Oro Trail Run Half Marathon Course Map

See the race route map for the Montana de Oro Trail Run Half Marathon course map here.

Starting Time

The half marathon start time is 9:00 AM.

The time limit for the half marathon is 7 hours.


To reserve your spot in the 2025 Montana de Oro Trail Run, you can use the registration link here.

Race Fees

  • There is a $139.00 fee for the Half Marathon (Hazard Peak).
  • There is a $164.00 fee for the 50K (Three Peaks).
  • There is a $149.00 fee for the 36K (Two Peaks).
  • There is a $114.00 fee for the 12K (Valencia Peak).

Montana de Oro Trail Run Race Website

Montana de Oro Trail Run Website

See more races in: March, California