Bizz Johnson Trail Marathon
Race Day Weather
Cool start, warming trend
Runners will face a temperature rise from 48°F at the start to a peak of 68°F by the finish. With light winds from the SW at 7 mph, conditions remain favorable. Runners should consider starting conservatively and adjust their pacing as temperatures increase, ensuring adequate hydration throughout.
Pace Calculator
Enter a finish time to see what race day does to it.
Get forecast alerts for Bizz Johnson Trail Marathon
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
Race Info
The Bizz Johnson Trail Marathon and 50K distances begin at Mason Station with an out and back on McCoy Road (You will be bused to the start). After returning to Mason Station, you'll jump onto the Bizz Johnson Trail and travel through scenic Lassen National Forest. The first few miles of the course climb 280 feet through the forest to Westwood Junction, then it’s downhill to the finish at Susanville, with a 1300-foot descent over the final 20 miles. The trail follows the route of the old Fernley and Lassen Branch Line of the Southern Pacific Railroad, built in 1914.