Walking (trail) 5:00  0.33 mi (15:09 / mi) +50m 10:18 / mi
Walked up part of the main trail at Seahurst Park.
Cycling (mtb single-track / road) 3:07:00  28.9 mi (6:28 / mi) +500m 6:08 / mi
Rode at Des Moines Creek Park, North Sea-Tac Park, and the roads in between. My legs felt pretty tired after about 1:40, but they didn't get significantly worse after that. The ride had many variations in intensity, because I was exploring new, sometimes technical trails while going.