Alexey Zaitsev has 4 recorded races from Boulder, CO.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2026-07-24 | 2026 Life Time Leadville Stage Race 2 Day Totals | Ultra Marathon | 6:01:28 | 61 |
| 2026-07-24 | 2026 Life Time Leadville Stage Race Day 3 - 40 Miles | Ultra Marathon | 3:14:37 | 57 |
| 2025-09-28 | Boulderthon 10K | 10K | 53:05 | 276 |
| 2025-08-10 | 2025 Life Time Leadville 10K presented by La Sportiva | 10K | 1:02:04 | 274 |