John Witkiewicz's efforts:	From	Age	Date	Finish Time
Quad Rock (2019) (Quad Rock 25)	Colorado, US	36	Saturday, May 11, 2019	05:56:51.00
Quad Rock (2018) (Quad Rock 50)	Colorado, US	35	Saturday, May 12, 2018	12:30:54.00
Blue Sky Trail Marathon (2017)	CO	35	Saturday, October 21, 2017	04:46:58.00
Quad Rock 2017	Colorado, US	34	Saturday, May 13, 2017	06:19:11.00
Never Summer 100k 2015	CO	33	Saturday, July 25, 2015	20:48:04.00