Flat grade share
- Tahoe 200 Endurance Run Ultramarathon
- 21.7% Favoured
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A data-led head-to-head using sourced race facts and available derived figures under one published methodology.
Data current as ofTahoe 200 Endurance Run Ultramarathon has the stronger available profile on flat grade share and conditions.
| Metric | Tahoe 200 Endurance Run Ultramarathon | Tamalpa Headlands 50K Ultramarathon |
|---|---|---|
| Flat grade share | 21.7% ✓ | 16.8% |
| GAP factor (% slower than flat) | 6617165.0% | 11.6% ✓ |
| Uphill share | 39.2% | 37.3% |
| Steep-up share | 24.8% | 28.2% |
| Downhill share | 39.1% | 45.9% |
| Total ascent (m) | 13,097 m | 1,966 m |
| Climbing density (m/km) | 40.6 m/km | 39.3 m/km |
| Longest climb length (m) | 1,300 m | 3,280 m |
| Longest climb gain (m) | 2,539 m | 311 m |
| Longest climb average grade | 195.3% | 9.5% |
| Total descent (m) | 13,099 m | 1,967 m |
| Net elevation (m) | -1 m | -1 m |
| Max absolute grade | 2413.5% | 43.2% |
| Start elevation (m) | 2,283 m | 14 m |
| Finish elevation (m) | 2,281 m | 14 m |
| Scenic score | 100/100 | 100/100 |
| Conditions | 80/100 ✓ | 76/100 |
Only metrics available for at least one side are shown. A ✓ marks the better value for each metric (higher-is-better aware). Scores are out of 100 when available. Ascent, climbing density, max absolute grade and median finish describe course or field context and are not marked as better or worse.
| Fact | Tahoe 200 Endurance Run Ultramarathon | Tamalpa Headlands 50K Ultramarathon |
|---|---|---|
| Race date | 2027-06-21 | 2026-08-15 |
| Location | South Lake Tahoe, California | Muir Beach, California |
| Actual distance | 322.5 km | 50 km |
| RaceIndex mapped route held | Held | Held |
| RaceIndex elevation profile held | Held | Held |
| Course type | Loop | Loop |
| Surface | Predominantly mountain single Track trail (Tahoe Rim Trail) with rocky sections, dirt trail and possible lingering snow at higher elevations. | Mixed terrain: single Track trail, fire roads, and brief sections along Highway 1 |
| Elevation character | Mountainous | Mountainous |
| Terrain | Trail | Beach, Trail |
| Scenery | Mountain, Forest, Lakeside, Waterfront, Parkland, Countryside | Coastal, Countryside, Mountain, Forest, Waterfront, Parkland |
| Atmosphere | Wilderness, Destination, Nighttime | Wilderness, Scenic Tour, Competitive |
| Technicality | Technical | Technical |
| Total ascent | 13,097 m | 1,966 m |
| Climbing density | 40.6 m/km | 39.3 m/km |
| Total descent | 13,099 m | 1,967 m |
| Net elevation | -1 m | -1 m |
| Max absolute grade | 2413.5% | 43.2% |
| Flat grade share | 21.7% | 16.8% |
| GAP factor | 6617165.0% | 11.6% |
| Cutoff | 105:00:00 | 10:00:00 |
| Field cap | 250 | 250 |
| Entry model | Ballot | Open |
Facts are shown only when they exist in the sourced race record; Not held means no sourced value is held for that race.
Tamalpa Headlands 50K Ultramarathon has the lower GAP factor, making it the flatter course on our route model and more favourable on gradient alone.