4 Mile Tempo, Fartlek

Time: 66:00
Distance: 10.5 mi.

Target: 2 x 4 mile tempo in 5:15-5:20 (21:00 to 21:20) with 3 minutes rest (like this workout from last fall)
Workout: 1 x 4 mile tempo in 21:47 (5:21.9, 5:24.8, 5:24.7, 5:36.3); 10 x 45 seconds hard, 60 seconds easy

The humidity owned me. When I was warming up I tried to convince myself that it wasn't that bad and that I would feel fine once I settled in. That did not happen. The first mile was rough, the second mile was rough, the third mile felt terrible and the fourth mile I packed it in. It was definitely the day, not me, as last week I put in a similar effort over 10 miles on a relatively cool morning. I didn't want to totally stop, and after a few minutes of standing recovery I didn't feel awful, so I did the fartlek back around Town Lake and to Zilker where I parked the car.

Barton Springs afterwards hit the spot.