
Redlands, United States of America · Saturday 8 November 2025
The Big Bear Marathon is a high-altitude, downhill race set in the scenic San Bernardino Mountains of Southern California. Known for its breathtaking views and fast course, the race starts at over 6,500 feet above sea level before making a steady descent toward the foothills. Runners are treated to a picturesque journey through pine forests, winding mountain roads, and open vistas, making for a race that is both visually stunning and primed for personal bests.\n\nWith its significant net downhil
Adjusted Time
3:48:08
Time difference: -11.9 minutes compared to a flat, road, temperate course.
Big Bear Marathon is a full marathon held in Redlands, United States of America, scheduled for Saturday 8 November 2025. The course is run on road surface with 0m of total elevation gain, reaching a maximum altitude of 0m above sea level. For registration and full race details, visit the official Big Bear Marathon website.
This is a very flat course with only 0m of total elevation gain across the full distance. The course ranges from 0m to 0m above sea level — a 0m elevation range that makes it one of the flatter races available. Runners targeting a personal best will appreciate the minimal climbing.
Based on historical weather data for November, the expected race day conditions are as follows. Near-ideal running temperatures are expected, ranging from 3°C to 16°C. This temperature range is widely considered optimal for marathon performance, allowing efficient heat dissipation without cold-related issues. There is a low chance of rain (1%), so dry conditions are likely.
Big Bear Marathon is run on road surfaces, which provide the fastest and most predictable conditions for marathon running. Road courses allow for consistent pacing and are typically the best choice for runners targeting a personal best time.
Our difficulty rating for Big Bear 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 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 Big Bear Marathon against other marathons to find the right race for your goals.
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