A stone's throw from Denver, the first segment of the Colorado Trail takes you up a semi-accessible dirt road from Littleton into Waterton Canyon and on to the epic, 200-some-feet-high Strontia Springs Dam. The scenery here turns spectacular fast. Although the wide trail — which doubles as a road for Denver Water — is often packed with mountain bikers and hikers, dogs aren't allowed. But the throngs trekking into the canyon for the relatively easy walk (800 feet of elevation gain over 12.4 miles out and back) share the corridor with deer, Bighorn sheep, mountain lions, black bears and golden eagles.
denverwater.org/recreation