Results/Photos

Date: Sept. 27, 2026 Participant: Samantha Sellke #11645 Race: 2026 Boulderthon Marathon Distance: 26.2 miles

Steady Opening Miles Carry a Patient Marathon Effort Samantha Sellke completed the 2026 Boulderthon Marathon in 4:08:15, averaging 9:28 per mile. Her race built from a strong opening: miles 1 through 6 ticked by between 8:05 and 8:21 per mile, the fastest sustained stretch of her day. From there, cumulative pace eased gradually through the middle miles before slowing more noticeably in the final 10K, with the 21st and 22nd miles marking her toughest stretch of the race before she rallied over the closing mile. Boulder sits above 5,000 feet, a backdrop for any marathon effort here. Sellke's own toughest miles, 21 and 22, fell right around where the course passes the lululemon Power-Up Zone near mile 22.5, before the field turns toward the finish on the historic Pearl Street Mall.