2 min wu then 2 hills in and out of saddle; 169/141
Hiking (P tread) 20:00 2.4 km (8:20 / km) +80m7:09 / km ahr:122
3 min wu then 2 hills up to 9% and 5mph with flat road recovery between; 265/221
Note
I've noted this previously comparing running to cycling; here's another observation to support the fact that I am a more efficient runner/walker than cyclist. For same average HR =127 (and surrogate for VO2), under identical indoor conditions (ie room temp and fan at same setting) and back to back efforts, I get 50% greater average power output walking than cycling (221W vs 141W).