The Bizz Johnson Trail Marathon 2025 is a two-day trail running event held on October 11–12 in Susanville, California, featuring multiple race distances: 10K, Half Marathon, Express Half Marathon, Express Half Marathon Relay, Marathon (26.2 miles), and 50K. The course follows the historic Fernley and Lassen Branch Line of the Southern Pacific Railroad, offering runners a scenic journey through Lassen National Forest with a gentle 2% downhill grade, descending approximately 1,300 feet over the final 20 miles. Participants will experience picturesque views, including the Susan River Canyon, wooden railroad bridges, and two former railroad tunnels. The event promotes sustainability as a reduced-cup/cupless race and provides free shuttle services to starting points where necessary. With its USATF-certified course, the marathon serves as a Boston Marathon qualifier, attracting runners seeking both challenge and natural beauty.  
Races
50km
Marathon
Half Marathon
Half Marathon
Half Marathon
10km
Race Date:
11 October, 2025
The 50K Ultra Marathon on Saturday, October 11, 2025, starts at Mason Station and includes an out-and-back on McCoy Road before joining the Bizz Johnson Trail. Runners experience a scenic descent through Lassen National Forest, crossing wooden bridges and historic railroad tunnels, culminating at Hobo Camp.  
Weather based on historical averages.
FAQs
What is the Bizz Johnson Trail 50K?
How long is the Bizz Johnson Trail 50K?
Where does the Bizz Johnson Trail 50K take place?
What is the elevation gain of the Bizz Johnson Trail 50K?
How can I prepare for the Bizz Johnson Trail 50K?
How do I choose the right training plan for the Bizz Johnson Trail 50K?
The 50K Ultra Marathon on Saturday, October 11, 2025, starts at Mason Station and includes an out-and-back on McCoy Road before joining the Bizz Johnson Trail. Runners experience a scenic descent through Lassen National Forest, crossing wooden bridges and historic railroad tunnels, culminating at Hobo Camp.  
The Bizz Johnson Trail 50K is 50km long.
The Bizz Johnson Trail 50K takes place in Susanville, CA, USA.
The Bizz Johnson Trail 50K elevation gain is 53889 meters, which Runna classifies as a Moderate race.
The best way to train for the next race is to use a personalized 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 personalized 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 Bizz Johnson Trail 50K?
The 50K Ultra Marathon on Saturday, October 11, 2025, starts at Mason Station and includes an out-and-back on McCoy Road before joining the Bizz Johnson Trail. Runners experience a scenic descent through Lassen National Forest, crossing wooden bridges and historic railroad tunnels, culminating at Hobo Camp.  
How long is the Bizz Johnson Trail 50K?
The Bizz Johnson Trail 50K is 50km long.
Where does the Bizz Johnson Trail 50K take place?
The Bizz Johnson Trail 50K takes place in Susanville, CA, USA.
What is the elevation gain of the Bizz Johnson Trail 50K?
The Bizz Johnson Trail 50K elevation gain is 53889 meters, which Runna classifies as a Moderate race.
How can I prepare for the Bizz Johnson Trail 50K?
The best way to train for the next race is to use a personalized 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 Bizz Johnson Trail 50K?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized 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
Qualifier:
Boston Marathon Qualifier
Tags:
Nature
Boston Marathon Qualifier
Altitude
This event listing is for informational purposes only. Runna is not affiliated with, endorsed by, or sponsored by Bizz Johnson Trail Marathon 2025 or Bizz Running Company. 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 Bizz Johnson Trail Marathon 2025 website.
