I am not one to opt for the treadmill when it is cold, but biting wind that makes it feel like -24 degrees can keep me inside. So, I did a good workout of elevation change increasing by 1 every five minutes after the 15 minute warmup.
7:30 pace on my treadmill* - 15 minutes flat at 0 elevation, 5 at 1, 5 at 2, 5 at 3, 5 at 4, and 5 at 5. Then I worked my way back down. 5 at 4, 5 at 3, 5 at 2, 5 at 1, and 15 at 0. Totalled 75 minutes.
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