| Ladislav Lettovsky's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| Never Summer (2021) (100k) | Colorado, US | 59 | Saturday, July 31, 2021 | 23:42:25.00 |
| The Bear 100 2009 | Colorado, US | 48 | Friday, September 25, 2009 | 35:01:00.00 |
| Ladislav Lettovsky's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| Never Summer (2021) (100k) | Colorado, US | 59 | Saturday, July 31, 2021 | 23:42:25.00 |
| The Bear 100 2009 | Colorado, US | 48 | Friday, September 25, 2009 | 35:01:00.00 |