Michael Guilford's efforts:	From	Age	Date	Finish Time
Quad Rock 2025 (Quad Rock 50)	Colorado, US	48	Saturday, May 10, 2025	DNF
Never Summer (2022) (100k)	Colorado, US	46	Saturday, July 30, 2022	21:17:10.00
Quad Rock 2022 (Quad Rock 50)	Colorado, US	45	Saturday, May 7, 2022	12:59:16.00
2021 Silverton Ultra Dirty (60K)	Colorado, US	45	Saturday, August 7, 2021	10:02:13.00
Quad Rock 2021 (Quad Rock 50)	Colorado, US	44	Saturday, May 8, 2021	12:43:43.00