New Hampshire, US
Submitted by Emily Cousens:
The classic training loop up and down Mt. Sunapee. Park at the base lodge and take the Summit Trail to the summit, admire the view and follow the access road back down (also called Williamson trail -- backcountry ski trail in winter), you will reach a landing near the campground, continue following the access road down, then take a left and crush the entrance road back to the parking lot.
There are a few types of people who prefer running this in reverse, which is also fine and we don't judge.
5+mi, 1500+ft gain.
The ascent has a Strava Segment.
I've, Iain Ridgway, have done 58:52, on this route recently. I was only 33 up so plenty of time to come off that if I pushed it.