
Westwood-Susanville, United States of America · Saturday 11 October 2025
The Bizz Johnson Trail Half Marathon is held on the Bizz Johnson Trail, a beautiful rail-to-trail route in Susanville, California. The trail runs through the northern Sierra Nevada, offering participants spectacular views of rugged mountains, wild rivers, and forests. The course is primarily on dirt paths, providing a slightly challenging but enjoyable experience for trail runners. The terrain varies from rolling hills to flat sections with smooth surfaces, making it a diverse and fun race.\n\nA
Adjusted Time
2:23:15
Time difference: +38.3 minutes compared to a flat, road, temperate course.
Bizz Johnson Trail Half Marathon is a half marathon held in Westwood-Susanville, United States of America, scheduled for Saturday 11 October 2025. The course is run on trail surface with 123m of total elevation gain, reaching a maximum altitude of 1425m above sea level. For registration and full race details, visit the official Bizz Johnson Trail Half Marathon website.
With 123m of elevation gain, this is a moderately undulating course. The route ranges from 1281m to 1425m above sea level (144m total range). While not completely flat, the elevation changes are manageable for most runners and shouldn't significantly impact pacing strategy.
Based on historical weather data for October, the expected race day conditions are as follows. Near-ideal running temperatures are expected, ranging from 4°C to 13°C. This temperature range is widely considered optimal for marathon performance, allowing efficient heat dissipation without cold-related issues. There is a moderate chance of rain (29%). Runners may want to prepare for wet conditions but shouldn't expect persistent rainfall.
Bizz Johnson Trail Half Marathon is a trail race, meaning the course includes unpaved surfaces such as dirt, gravel, or forest paths. Trail surfaces are inherently slower than road courses due to uneven footing, technical sections, and often steeper gradients. Trail-specific shoes with good grip are recommended, and runners should expect a finish time 10-20% slower than their equivalent road marathon time.
Our difficulty rating for Bizz Johnson Trail Half Marathon is calculated using a model that combines elevation gain, temperature impact, and surface type. Use the difficulty calculator above to enter your target finish time and see exactly how many minutes this course would add or subtract compared to a perfectly flat, cool, road-based half marathon. Faster runners and slower runners are affected differently by the same course conditions, so the difficulty is personalised to your pace.
Looking for an easier marathon or a tougher challenge? You can also compare Bizz Johnson Trail Half Marathon against other half marathons to find the right race for your goals.
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