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RE: Smokescreens
A reminder on the 1:12 half marathon, don't let Rob try to tell you it was all downhill. The significant uphill for the first 6mi negates the benefit of the net downhill.

- He started at 8570ft elevation
- First 6 miles in 36:25 (6:04 pace), climbing 850ft
- Next 7.1 miles in 36:50 (5:11 pace), dropping 1600ft
- The 13.1 split was 1:13:15 (5:36 pace), with a avg elev of 8700ft and net elev change of -750ft.

Using the runworks calculator.
Predicted finish time for a flat course = 1:13:14.5
Predicted finish time for a flat sea level course = 1:08:26

Note: After 13.1 he continued a bit further to 13.75mi and took a 15min break. The 1:12 strava best effort is the split from 0.65 to 13.75 in 1:12:50, but it has a larger net elev drop of -920ft

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