Intervals 1:18:00 [3] 8.2 mi (9:31 / mi)
15 minutes warmup and 12 minute cooldown.
One mile intervals- on pretty flat. 1st, 3rd, and 5th interval are a tiny bit uphill along Cherry Creek.
650, 652, 652, 641, 638
Kept it pretty close to 850 for 1 minute between miles. No walking at all.