Urban hikes have a reputation for being short, one-day jaunts around a park. Not so with the historic High Line Canal trail, which ventures through eleven municipalities, starting in Waterton Canyon in Douglas County and continuing for 71 miles to Green Valley Ranch in northeast Denver. Coursing alongside cottonwood banks, the trail takes hikers through parks, golf courses, cemeteries and more. And although more than 500,000 people use the trail each year and roughly 350,000 people live within a mile of it, there are plenty of spots where city hikers can find a bit of much-needed solitude.
highlinecanal.org