Colorado
Boulder sits against the Flatirons: a historic Chautauqua lawn and trailhead, a 5.5-mile creek path through downtown, and open-space trailheads that open at 5 a.m.
Photo: The Flatirons at sunrise, seen from Chautauqua in Boulder, Tyler Cipriani, CC BY-SA 4.0
Boulder sits on the Front Range, with the Flatirons rising west of town. Official Open Space and Mountain Parks pages place the Chautauqua trailhead at the base of those rocks: it is open 5 a.m. to 11 p.m. daily, with no trailhead entry fee, though parking is limited and a parking fee applies in the summer months. Official pages say many trails are accessible from Chautauqua, including Royal Arch, and that black bears and mountain lions inhabit the area. Bicycles are not allowed on the trails in the Chautauqua area.
Through downtown, official parks pages describe the Boulder Creek Path as a popular 5.5-mile multi-use path, from Boulder Canyon on the west to Stazio Ballfields on the east, just past 55th Street, passing the Main Library, Civic Area Park and the Boulder Dushanbe Teahouse. Eben G. Fine Park, at 101 Arapahoe Avenue, sits on the creek and the path, with a historic stone picnic shelter and a bridge to The Peoples' Crossing Trailhead and Red Rocks Trail. About 45 minutes north, Estes Park and Rocky Mountain National Park make a natural second day.
Trails, lookouts, waterfalls, beaches and time on the water come first.
A city park at the base of the Flatirons, official parks pages say, with a manicured lawn and access to Open Space and Mountain Parks trails. Groups of fewer than 50 people do not need a lawn permit, as long as they follow general park rules. Confirm current access before you go.
A popular 5.5-mile multi-use path, official parks pages say, from Boulder Canyon on the west to Stazio Ballfields on the east, just past 55th Street. It runs through downtown and past the Main Library, Civic Area Park and the Boulder Dushanbe Teahouse. The path is maintained jointly by Parks and Recreation and the Utilities Department's Greenways Program.
A city park at 101 Arapahoe Avenue, official pages say, with portions of Boulder Creek and the Boulder Creek Path, a playground, open turf, a historic stone picnic shelter, picnic tables near the creek and water access. Restrooms are open year-round, with limited hours in fall and winter. Grilling is not allowed, because of the park's closeness to the mountains. Groups must be 50 people or fewer. Glass containers, alcohol and private grills are prohibited. A multi-use pedestrian bridge connects the park to The Peoples' Crossing Trailhead and Red Rocks Trail.
Season Restrooms are open year-round, with limited hours in fall and winter (check before you go).
A trailhead at 4201 North Broadway, official pages say, open 5 a.m. to 11 p.m. daily, with access to Wonderland Lake and South Foothills Trails and the Foothills Nature Center. The lot has 19 standard spaces and two accessible spaces. One picnic table is available; grills and stoves are prohibited. Official pages say fishing is allowed from the dam and peninsula only, and that state fishing regulations apply. Mountain lions frequent the hogback ridges in this area. Sport chairs can access the dam for fishing from the Poplar Street access.
Season Official hours are 5 a.m. to 11 p.m. daily (check before you go).
A popular Open Space and Mountain Parks trailhead at the base of the Flatirons, official pages say, open 5 a.m. to 11 p.m. daily. Parking can be a challenge; a lot near the Ranger Cottage has 48 standard spaces, and a parking fee applies in the summer months. Official pages say many trails are accessible from Chautauqua. Bicycles are not allowed on the trails in the Chautauqua area. Black bears and mountain lions inhabit this area.
Season Official hours are 5 a.m. to 11 p.m. daily. A parking fee applies in the summer months (check before you go).
The sandstone slabs that rise west of Boulder, reached from official trailheads including Chautauqua. Official Chautauqua pages say the area can become very crowded when the weather is nice, and that black bears and mountain lions inhabit the area. Confirm current trail conditions and any closures before you go.
Season Confirm current trail conditions and any closures before you go.
A trail official Chautauqua trailhead pages name among the many trails accessible from Chautauqua. Official trailhead hours are 5 a.m. to 11 p.m. daily. Bicycles are not allowed on the trails in the Chautauqua area. Confirm current trail conditions and any closures before you go.
Season Official Chautauqua trailhead hours are 5 a.m. to 11 p.m. daily. Confirm current trail conditions (check before you go).
A trailhead at 3663 State Highway 93, official pages say, open 5 a.m. to 11 p.m. daily, with access to the Flatirons Vista and Doudy Draw area trails. There is a parking fee; the lot has 29 standard spaces, and parking is not allowed along Highway 93. Official pages say the area is closed when conditions are too muddy. A prescribed fire may occur here between 9 and 20 November 2026; check the official closures page before you go.
Season Official hours are 5 a.m. to 11 p.m. daily. The area may close when muddy. A prescribed fire may occur between 9 and 20 November 2026 (check before you go).
A trail official Eben G. Fine pages say you can reach from the park by a pedestrian bridge to The Peoples' Crossing Trailhead. Official OSMP closures pages listed work and intermittent closures on segments of Red Rocks Trail; confirm current access on the official closures page before you go.
Boulder's official open-space system, reached from trailheads that official pages typically list as open 5 a.m. to 11 p.m. Check the official closures page before you go, including muddy-trail closures, and sign up for text updates by texting OSMP to 888-777.
Season Check the official closures page, including muddy-trail closures, before you go.
Museums, landmarks and the places people come here for.
A small nature centre at 900 Baseline Road, official pages say, with free maps, brochures, hiking suggestions, and current information about weather, trail conditions and wildlife closures. Official pages listed hours as 9 a.m. to 4 p.m.; confirm current hours before you go. Picnic tables sit beside the cottage.
Season Official pages listed hours as 9 a.m. to 4 p.m. (check before you go).
The downtown pedestrian mall, official city pages say, designated as the Downtown Boulder Mall on 6 August 1977, when cars were prohibited on these blocks. Official pages also describe a planned refresh of the mall; confirm current access before you go.
Cruises, tours and experiences people book here. Each one goes to the operator's official page, and you can still add it to your trip.
A small nature centre at 900 Baseline Road, with free maps, brochures and current trail information. Official pages listed hours as 9 a.m. to 4 p.m.; confirm current hours before you go.
Season Official pages listed hours as 9 a.m. to 4 p.m. (check before you go).
Part of our Estes Park and Boulder guides.
Photo: The Flatirons at sunrise, seen from Chautauqua in Boulder, Tyler Cipriani, CC BY-SA 4.0
Photo: The meadow and fence at Chautauqua Park, with the Flatirons beyond, Laurascudder assumed (based on copyright cl, CC BY-SA 3.0
Photo: The sandstone Flatirons rising above the forest west of Boulder, joiseyshowaa, CC BY-SA 2.0
Photo: Boulder Creek and a footbridge along the Boulder Creek Path in winter, Postfachannabella, CC BY-SA 4.0
