Neaves Road TT test - new ftp 320

Trying to assess what pacing will be appropriate for the Squamish 38.5K TT on Aug 11. So I did a 40K test on Neaves Road. Managed to do average power of 321...

Neaves Road 43K TT:

Duration: 1:00:52
Work: 1173 kJ
TSS: 103.3 (intensity factor 1.009)
Norm Power: 323
VI: 1.01
Distance: 43.017 km
Elevation Gain: 83 m
Elevation Loss: 90 m
Grade: -0.0 % (-7 m)
Min Max Avg
Power: 0 887 321 watts
Heart rate: 116 176 171 bpm
Cadence: 29 102 86 rpm
Speed: 9.4 49.7 42.4 kph
Pace 1:12 6:23 1:25 min/km
Altitude: 122 130 126 m
Crank Torque: 0 108.4 36.2 N-m
Temperature: 19 25 21.2 Celsius

This was a non-race effort and I had reasonable reserves left at both 52 minutes (target Squamish TT time) and at 1 hour. So I'm planning on 325 for the first (faster, easier) half, 330 for the second (harder) half, and higher if possible for the last (hardest) 5k.

Note that I extended the Neaves Road course a bit, doing 6K in each leg instead of 5K. This reduces the turnarounds by one (six instead of seven over this distance) and adds a bit of additional landscape to watch... Unfortunately I can't go farther north as the pavement changes to a chip-seal type surface that is unpleasant to ride. It does mean going over two small bridge type "hills" of about 2-3 meters instead of just one.