10 Best Hiking & Trails in Denver (Costs & Tips, 2026)

Massive red sandstone monoliths tower on either side of the trail here, the same rock formations that back the amphitheater below where bands have played since the 1940s — a 1.4-mile loop that costs nothing and takes you right past the stage without needing a concert ticket. No entrance fee, and it's genuinely one of the most photographed hikes in the state.

At 14,065 feet, this is widely considered the most approachable of Colorado's 58 fourteeners — no technical climbing, just a steep 7-mile round trip through the Sawtooth ridge's shadow — which also makes it one of the most crowded trailheads in the state on a summer weekend. Free, but arrive before sunrise; afternoon thunderstorms above treeline aren't optional to avoid, they're mandatory.

Boulder's tilted sandstone slabs are visible from miles away long before you reach them, and this trail climbs directly into their shadow rather than just admiring them from a distance below. No cost to hike, though the small parking lot at the historic 1898 Chautauqua park fills early on weekends — a shuttle runs from downtown Boulder once it does.

A genuine natural sandstone arch frames the view at the top of a climb steep enough that it's noticeably harder than its 3.4-mile distance suggests — the reward is a wide-open perch looking straight back down over Boulder. Free to hike, starting from the same Chautauqua trailhead as the Flatirons trail nearby.

A $20 vehicle reservation plus a $2 booking fee gets you access to genuine alpine tundra above 12,000 feet, where mountain goats and bighorn sheep are common enough sightings that spotting one barely counts as luck. The short trail from Summit Lake to the 14,130-foot summit sits alongside the highest paved road in North America — renamed Mount Blue Sky from Mount Evans in 2023, with the byway itself reopening in 2026 after a multi-year closure for road reconstruction.

The whole Denver skyline lines up against the Rockies from this summit, and unlike most of the hikes on this list, it's genuinely reachable in under 20 minutes from downtown without ever getting on I-70. No fee, moderate 6-mile loop, and it stays open year-round including light winter snow.

A genuine reservoir with beach-style swimming access sits at the center of this park's trail network, which makes it one of the few hikes on this list that doubles as a full day out for a family rather than just a walk. No entrance fee for hikers, and the flat, wide trails around the water stay manageable even for young kids.

Wildflower meadows carpet the lower switchbacks through late July most years, building to a genuine alpine lake at the trail's end that sits below a dramatic cirque wall. Free, right off I-70 near the Eisenhower Tunnel, which makes it one of the more accessible alpine-lake hikes on this list despite the payoff feeling remote.

Stone ruins of an early-1900s mansion sit crumbling partway up this trail, built by a Denver businessman who intended it as a summer White House before a lightning strike burned it down in 1918. No fee, and the ruins alone make the moderate 3.5-mile round trip worth it even without the Denver skyline view waiting at the actual summit.

Three granite rock formations give this small mountain-town park its name, and the trail network through ponderosa pine forest stays quiet enough that it rarely feels like the tourist draw Red Rocks or the Flatirons have become. No cost, and Evergreen's own lake and downtown make a natural stop before or after.