Run/Bike with 40 minute TT

am run 4 miles in 29, HR Z2

pm Bike 61 miles, 3:15

ave power for entire ride 254 W, HR 121 (Z3) before interval 226 (Z2)

at 35 miles, did 40 minute Z4 TT on flats. Very windy for about 20 minutes.

TT 40 minutes: ave power, 303 W (Z4)
HR ave 147 (Z5) max 157 (max)
Speed 23.1 mph
Torque 386 lbs
Distance 15.2 miles

This was a tough interval. Headwind for about half. This is where I reached my max HR on the bike thus far this season. Holding +300 watts in a 15 mph headwind. Z4 is tough for this duration. Last week, did 3 X 12 minutes at this zone, so, 40 minutes at the end of a Z2 ride was tough. Very, Very tired at the end of this one.