Bighorn 100 Grade Profile
Terrain steepness breakdown for the Bighorn 100 in Wyoming's Bighorn Mountains. Use this analysis for race planning and targeted training preparation.
98.9
Total Miles
21,032
Feet Gain
48
Ascent Miles
50.7
Descent Miles
Grade Distribution
| Direction | Grade | Miles | Race % | Feet |
|---|---|---|---|---|
| ↓ Down | 25%+ | 1.7 mi | 1.7% | 2,771 |
| ↓ Down | 15-25% | 3.9 mi | 3.9% | 3,852 |
| ↓ Down | 10-15% | 6.4 mi | 6.5% | 4,130 |
| ↓ Down | 5-10% | 11.8 mi | 11.9% | 4,533 |
| ↓ Down | 0-5% | 26.9 mi | 27.2% | 3,233 |
| ↑ Up | 0-5% | 24.2 mi | 24.5% | 2,975 |
| ↑ Up | 5-10% | 12 mi | 12.1% | 4,536 |
| ↑ Up | 10-15% | 6.1 mi | 6.2% | 3,883 |
| ↑ Up | 15-25% | 4 mi | 4.0% | 3,999 |
| ↑ Up | 25%+ | 1.7 mi | 1.7% | 2,733 |
Grade Bands
0-5%
Flat/Gentle
5-10%
Runnable
10-15%
Transition
15-25%
Power Hike
25%+
Steep
Frequently Asked Questions
What is the Bighorn 100?
The Bighorn 100 is a 100-mile ultramarathon held annually in June in Wyoming's Bighorn Mountains. The course travels through the Bighorn National Forest with elevations ranging from 4,600 to 9,400 feet.
How much of Bighorn 100 is steep terrain?
The course has 5.7 miles of steep climbing (15%+) and 5.6 miles of steep descent. Over half the course is gentle terrain under 5% grade.
What is the time limit for Bighorn 100?
The Bighorn 100 has a 36-hour cutoff. With 21,032 feet of climbing, you need to average roughly 580 ft/hr of vertical gain during climbing sections to finish comfortably.
How does Bighorn 100 compare to other mountain 100s?
Bighorn 100 has similar elevation gain to races like Crazy Mountain 100 (~21,000 ft), but features more runnable terrain with over 50% of climbing in the 0-5% grade band. The high-altitude sections and June heat are the primary challenges.