Given this spectacular heat, the Strava Segment for this week is in the shade of Portland’s Forest Park. And it’s a downhill segment. It’s also easy to determine the start and finish – it’s right there in the title! Alder is (and I’m making and educated guess here) about 0.7 miles from the Thurman Gate, which is actually about 50 meters in from the 0-mile marker of Leif Erickson Trail. You start there and run…