Set for July 12, 2025, the San Lorenzo River Trail Run is a premier trail racing event in Santa Cruz, California, hosted at Harvey West Park. Participants can choose from a variety of distances: 10K, Half Marathon, 30K, Marathon, and 50K, along with a free ¼-mile Kid’s Run for children aged 6 and under. The course winds through towering 1,500-year-old coastal redwoods, lush stream canyons, open meadows, and high chaparral-covered ridges, with the longer distances featuring multiple crossings of the San Lorenzo River. All distances are precisely measured using a Rolatape® surveyor’s wheel, ensuring accuracy. Finishers receive custom medals, and top performers in each age group are awarded additional prizes. The event emphasizes sustainability by being cupless, encouraging runners to bring their own hydration containers.
Races
50 km
Marathon
30 km
Half Marathon
10 km
Race Date:
12 July, 2025
The San Lorenzo River Trail 50K takes place on Saturday, July 12, 2025, in Santa Cruz, California. Hosted by Coastal Trail Runs, this demanding ultramarathon features 1,577 meters of elevation gain and leads runners through the majestic redwoods, river canyons, and technical trails of Henry Cowell Redwoods State Park.
Weather based on historical averages.
FAQs
What is the San Lorenzo River Trail 50K?
How long is the San Lorenzo River Trail 50K?
Where does the San Lorenzo River Trail 50K take place?
What is the elevation gain of the San Lorenzo River Trail 50K?
How can I prepare for the San Lorenzo River Trail 50K?
How do I choose the right training plan for the San Lorenzo River Trail 50K?
The San Lorenzo River Trail 50K takes place on Saturday, July 12, 2025, in Santa Cruz, California. Hosted by Coastal Trail Runs, this demanding ultramarathon features 1,577 meters of elevation gain and leads runners through the majestic redwoods, river canyons, and technical trails of Henry Cowell Redwoods State Park.
The San Lorenzo River Trail 50K is 50km long.
The San Lorenzo River Trail 50K takes place in Santa Cruz, CA, USA.
The San Lorenzo River Trail 50K elevation gain is 1577 metres, which Runna classifies as a Hilly race.
The best way to train for the next race is to use a personalised training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalised training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the San Lorenzo River Trail 50K?
The San Lorenzo River Trail 50K takes place on Saturday, July 12, 2025, in Santa Cruz, California. Hosted by Coastal Trail Runs, this demanding ultramarathon features 1,577 meters of elevation gain and leads runners through the majestic redwoods, river canyons, and technical trails of Henry Cowell Redwoods State Park.
How long is the San Lorenzo River Trail 50K?
The San Lorenzo River Trail 50K is 50km long.
Where does the San Lorenzo River Trail 50K take place?
The San Lorenzo River Trail 50K takes place in Santa Cruz, CA, USA.
What is the elevation gain of the San Lorenzo River Trail 50K?
The San Lorenzo River Trail 50K elevation gain is 1577 metres, which Runna classifies as a Hilly race.
How can I prepare for the San Lorenzo River Trail 50K?
The best way to train for the next race is to use a personalised training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
How do I choose the right training plan for the San Lorenzo River Trail 50K?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalised training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
More
Sport:
Running
Tags:
Kid friendly
Park
This event listing is for informational purposes only. Runna is not affiliated with, endorsed by, or sponsored by San Lorenzo River Trail Run or Coastal Trail Runs. All event details are based on publicly available information and are provided solely to help users discover running events. Runna does not use any official logos, images, or proprietary content from this event or its organiser. Any trademarks or names mentioned are used descriptively to identify the event in a factual manner. For the most accurate and up to date information (including to register or purchase an entry to the event), please visit the San Lorenzo River Trail Run website.
