Cuttin' it short again

I had planned on doing 10 miles today but cut it short because my quads were shot.  Did 6 miles of Cowle's Mountain trails averaging 23:15 per mile. Still feeling the hike of 2 days ago - it doesn't take a lot to make my legs tired for days. I won't do any hills until Thursday and then try for another long hike next Sunday. At this point, I'll only do 3 days per week of exercise until the Grand Canyon hike on March 31.