Arianna Mermigas has 8 recorded races from West Yellowstone.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2026-07-04 | 21st Annual FireKracker 5K 2026 | 5K | 25:10 | 186 |
| 2026-06-12 | Vacation Races | Yellowstone Half & 5K Half Marathon | Half Marathon | 2:13:38 | 180 |
| 2026-06-12 | Vacation Races | Yellowstone Half & 5K | 5K | 26:59 | 55 |
| 2026-06-05 | Vacation Races | Grand Teton Half & 5K Half Marathon | Half Marathon | 2:08:11 | 358 |
| 2026-06-05 | Vacation Races | Grand Teton Half & 5K | 5K | 26:26 | 82 |
| 2025-06-14 | 2025 Scenic River Classic 5k Run/Walk | 5K | 24:23 | 5 |
| 2024-06-15 | 2024 Scenic River Classic 10k | 10K | 50:00 | 2 |
| 2023-07-04 | 18th Annual FireKracker 5K 2023 | 5K | 24:25 | 98 |