Today's walk was the four-mile trip along Los Gatos Creek. Kept my heart-rate in the low 120's going out; on the way back, mostly downhill with my right arm hurting (I'm sinister, so it's underused) and slowing down to prevent shin splints, it was mostly in the 115-120 range.
Stats: time: 1:13 (3.3mph); average: 122; max: 151.