| David Burns's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| Old West Trail Runs 2026 (50K) | California, US | 56 | Saturday, March 14, 2026 | |
| Black Mountain Trail Races (50k) | California, US | 55 | Saturday, June 21, 2025 | 07:58:27.00 |
| ABC 50 (Anza Borrego Cuyamaca 50) (50 Miler) | California, US | 55 | Saturday, December 7, 2024 | 12:52:17.00 |
| The Peak 2023 (Half Marathon) | California, US | 53 | Saturday, July 15, 2023 | 03:00:33.00 |