The Big Alta, established in 2005, has become a highlight for trail running enthusiasts in Marin County. The event offers multiple race distances to accommodate runners of all levels: 50K and 28K. The courses wind through the picturesque Lucas Valley and surrounding areas, offering participants views of Big Rock Ridge and Miller Creek. The event is known for its well-organized logistics, supportive volunteers, and a festive atmosphere that includes post-race refreshments and activities. Proceeds from the event often benefit local environmental and community organizations, contributing to the preservation of the natural trails used in the races.
Races
50km
50km
28km
28km
Race Date:
22 March, 2025
On March 22, 2025, the Big Alta Ultra 50km will push runners to their limits with 2,069 meters of elevation gain, traversing the rugged ridgelines of Marin County. Organized by Daybreak Racing and Freetrail, this course offers breathtaking views of the San Francisco Bay Area, blending tough ascents with exhilarating descents on both fire roads and single-track trails.
Race Date:
22 March, 2025
The Big Alta 50km, featuring 2042 meters of elevation gain, begins at Marinwood Community Park and takes runners on a challenging journey through Oregon’s Cascade Mountains. This ultra-distance race offers rugged terrain, forested paths, and stunning alpine views, providing a true test for seasoned trail runners.
Race Date:
22 March, 2025
The Big Alta 28km, starting from Marinwood Community Park, takes runners on a 28km journey with 1189 meters of elevation gain through the scenic Cascade Mountains. This race offers a shorter yet equally thrilling challenge, with steep climbs and stunning views throughout the course.
Race Date:
23 March, 2025
On March 23, 2025, the Big Alta 28km invites runners to conquer 1,198 meters of elevation gain through Marin County's challenging trails. This race, organized by Daybreak Racing and Freetrail, offers a shorter yet equally thrilling experience, combining steep climbs with awe-inspiring views of the Bay Area.
Weather based on historical averages.
FAQs
What is the Big Alta Ultra 50km?
How long is the Big Alta Ultra 50km?
Where does the Big Alta Ultra 50km take place?
What is the elevation gain of the Big Alta Ultra 50km?
How can I prepare for the Big Alta Ultra 50km?
How do I choose the right training plan for the Big Alta Ultra 50km?
On March 22, 2025, the Big Alta Ultra 50km will push runners to their limits with 2,069 meters of elevation gain, traversing the rugged ridgelines of Marin County. Organized by Daybreak Racing and Freetrail, this course offers breathtaking views of the San Francisco Bay Area, blending tough ascents with exhilarating descents on both fire roads and single-track trails.
The Big Alta Ultra 50km is 50km long.
The Big Alta Ultra 50km takes place in Lucas Valley-Marinwood, California, USA.
The Big Alta Ultra 50km elevation gain is 2069 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 Big Alta Ultra 50km?
On March 22, 2025, the Big Alta Ultra 50km will push runners to their limits with 2,069 meters of elevation gain, traversing the rugged ridgelines of Marin County. Organized by Daybreak Racing and Freetrail, this course offers breathtaking views of the San Francisco Bay Area, blending tough ascents with exhilarating descents on both fire roads and single-track trails.
How long is the Big Alta Ultra 50km?
The Big Alta Ultra 50km is 50km long.
Where does the Big Alta Ultra 50km take place?
The Big Alta Ultra 50km takes place in Lucas Valley-Marinwood, California, USA.
What is the elevation gain of the Big Alta Ultra 50km?
The Big Alta Ultra 50km elevation gain is 2069 metres, which Runna classifies as a Hilly race.
How can I prepare for the Big Alta Ultra 50km?
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 Big Alta Ultra 50km?
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 Big Alta 50km?
How long is the Big Alta 50km?
Where does the Big Alta 50km take place?
What is the elevation gain of the Big Alta 50km?
How can I prepare for the Big Alta 50km?
How do I choose the right training plan for the Big Alta 50km?
The Big Alta 50km, featuring 2042 meters of elevation gain, begins at Marinwood Community Park and takes runners on a challenging journey through Oregon’s Cascade Mountains. This ultra-distance race offers rugged terrain, forested paths, and stunning alpine views, providing a true test for seasoned trail runners.
The Big Alta 50km is 50km long.
The Big Alta 50km takes place in Lucas Valley-Marinwood, California, USA.
The Big Alta 50km elevation gain is 2042 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 Big Alta 50km?
The Big Alta 50km, featuring 2042 meters of elevation gain, begins at Marinwood Community Park and takes runners on a challenging journey through Oregon’s Cascade Mountains. This ultra-distance race offers rugged terrain, forested paths, and stunning alpine views, providing a true test for seasoned trail runners.
How long is the Big Alta 50km?
The Big Alta 50km is 50km long.
Where does the Big Alta 50km take place?
The Big Alta 50km takes place in Lucas Valley-Marinwood, California, USA.
What is the elevation gain of the Big Alta 50km?
The Big Alta 50km elevation gain is 2042 metres, which Runna classifies as a Hilly race.
How can I prepare for the Big Alta 50km?
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 Big Alta 50km?
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 Big Alta 28km?
How long is the Big Alta 28km?
Where does the Big Alta 28km take place?
What is the elevation gain of the Big Alta 28km?
How can I prepare for the Big Alta 28km?
How do I choose the right training plan for the Big Alta 28km?
The Big Alta 28km, starting from Marinwood Community Park, takes runners on a 28km journey with 1189 meters of elevation gain through the scenic Cascade Mountains. This race offers a shorter yet equally thrilling challenge, with steep climbs and stunning views throughout the course.
The Big Alta 28km is 28km long.
The Big Alta 28km takes place in Lucas Valley-Marinwood, California, USA.
The Big Alta 28km elevation gain is 1189 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 Big Alta 28km?
The Big Alta 28km, starting from Marinwood Community Park, takes runners on a 28km journey with 1189 meters of elevation gain through the scenic Cascade Mountains. This race offers a shorter yet equally thrilling challenge, with steep climbs and stunning views throughout the course.
How long is the Big Alta 28km?
The Big Alta 28km is 28km long.
Where does the Big Alta 28km take place?
The Big Alta 28km takes place in Lucas Valley-Marinwood, California, USA.
What is the elevation gain of the Big Alta 28km?
The Big Alta 28km elevation gain is 1189 metres, which Runna classifies as a Hilly race.
How can I prepare for the Big Alta 28km?
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 Big Alta 28km?
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 Big Alta 28km?
How long is the Big Alta 28km?
Where does the Big Alta 28km take place?
What is the elevation gain of the Big Alta 28km?
How can I prepare for the Big Alta 28km?
How do I choose the right training plan for the Big Alta 28km?
On March 23, 2025, the Big Alta 28km invites runners to conquer 1,198 meters of elevation gain through Marin County's challenging trails. This race, organized by Daybreak Racing and Freetrail, offers a shorter yet equally thrilling experience, combining steep climbs with awe-inspiring views of the Bay Area.
The Big Alta 28km is 28km long.
The Big Alta 28km takes place in Lucas Valley-Marinwood, California, USA.
The Big Alta 28km elevation gain is 1198 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 Big Alta 28km?
On March 23, 2025, the Big Alta 28km invites runners to conquer 1,198 meters of elevation gain through Marin County's challenging trails. This race, organized by Daybreak Racing and Freetrail, offers a shorter yet equally thrilling experience, combining steep climbs with awe-inspiring views of the Bay Area.
How long is the Big Alta 28km?
The Big Alta 28km is 28km long.
Where does the Big Alta 28km take place?
The Big Alta 28km takes place in Lucas Valley-Marinwood, California, USA.
What is the elevation gain of the Big Alta 28km?
The Big Alta 28km elevation gain is 1198 metres, which Runna classifies as a Hilly race.
How can I prepare for the Big Alta 28km?
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 Big Alta 28km?
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!
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Sport:
Running
Tags:
Nature
This event listing is for informational purposes only. Runna is not affiliated with, endorsed by, or sponsored by The Big Alta or Daybreak Racing LLC. 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 The Big Alta website.
