Boulder trailhead parking guide

Parking, not the trail, is the hardest part of a Boulder hike on a summer weekend. Here's the short version: the City of Boulder's Open Space and Mountain Parks (OSMP) charges for parking at a set of specific trailheads, with a $5 daily or $25 annual permit that only applies to vehicles not registered in Boulder County. Chautauqua runs a separate paid-parking program on summer weekends, paired with a free shuttle from downtown. The Hessie Trailhead near Nederland has its own free weekend shuttle. Plenty of other trailheads are free. This guide walks through each piece so you know what you'll pay and where to leave the car.

The OSMP parking permit, explained

OSMP charges for parking at certain trailheads to help manage crowding and fund the trail system. There are two permits:

• Daily permit, $5. Valid at every OSMP fee trailhead for the date you buy it. You can pick it up at the parking area or, more easily, through the ParkMobile app using the lot's zone number.
• Annual permit, $25. Good for a full year at all OSMP fee locations: the Flagstaff Mountain lots, Gregory Canyon, Doudy Draw, Flatirons Vista, Greenbelt Plateau, Marshall Mesa, South Boulder Creek West, and South Mesa. Buy it online.

Two things trip visitors up. First, the fee applies only to vehicles that are not registered in Boulder County: if you have Boulder County plates, you park free at these lots. Second, there's nothing to hang on your mirror. Your license plate is registered in the permitting system, so the permit is digital. Online purchases add a $1.50 non-city service charge, and permits are non-refundable.

How ParkMobile zones work

Each OSMP fee lot has its own ParkMobile zone number. Open the ParkMobile app, enter the zone posted at the trailhead, add your plate, and pay. The daily permit you buy is then valid at any OSMP fee trailhead that day, not just the one where you bought it. The zone numbers are listed in the table below.

Which Boulder trailheads charge for parking

These are the OSMP fee trailheads and their ParkMobile zone numbers. A $5 daily or $25 annual permit covers all of them, for out-of-county vehicles.

A few popular trailheads are not on this OSMP list and work differently. Chautauqua has its own summer paid-parking program (covered below), not the OSMP permit. NCAR (the National Center for Atmospheric Research, a federal facility) is not among the OSMP fee lots; its small lot is free but fills fast. And well-known spots like Mount Sanitas and the Boulder Creek Path rely on free street parking. If your trailhead isn't listed here, check that trailhead's own page before you go rather than assuming it's free or paid.

Chautauqua parking and the free Park-to-Park shuttle

Chautauqua is the trailhead for the Flatirons, the Royal Arch, and the Mesa Trail, and it's the hardest place in Boulder to park on a summer weekend. It runs its own program, separate from the OSMP permit. During the Park-to-Park shuttle season, paid parking is $2.50 per hour from 8 a.m. to 5 p.m. along the Chautauqua green parking areas, on Baseline Road near the park, at the Ranger Cottage lot, and on nearby neighborhood streets. Pay with the ParkMobile app or at a pay station. On weekdays and through fall, winter, and spring, parking at Chautauqua is free.

The smarter move on a busy weekend is the free Park-to-Park shuttle. It runs every 30 minutes from 8 a.m. to 8 p.m. on weekends and summer holidays, and the 2026 season runs from Saturday, May 23 through Monday, Sept. 7 (including Memorial Day, Juneteenth, Independence Day, and Labor Day). Park for free in a downtown city garage, which is free on weekends, and catch the shuttle at one of the stops around downtown Boulder, University Hill, or along Broadway. Shuttles have bike racks, and dogs, strollers, and gear are all welcome. Note the 11th and Spruce garage is closed for construction during the 2026 season, so use another downtown garage.

The free shuttles

Boulder County and the City of Boulder run free hiker shuttles to the two trailheads where parking is worst. They cost nothing to ride and save you the early-morning parking scramble.

Park-to-Park shuttle to Chautauqua

Covered above: free, every 30 minutes, 8 a.m. to 8 p.m., weekends and summer holidays, Saturday, May 23 through Monday, Sept. 7, 2026. Park downtown for free and ride in.

Hessie Trailhead shuttle from Nederland

The Hessie Trailhead, west of Nederland, is the gateway to Lost Lake and the Indian Peaks Wilderness, and its roadside parking is tiny. The free Hessie shuttle runs Fridays, Saturdays, Sundays, and holidays from May 22 through Oct. 11, 2026, leaving Nederland High School about every 15 minutes for a roughly 10-minute ride to the trailhead. Rough hours are Fridays 6 a.m. to 6 p.m., Saturdays 6 a.m. to 8 p.m. (dropping to 6 p.m. after Sept. 12), and Sundays 6 a.m. to 6 p.m. Leashed dogs are welcome, bikes are not, and no reservation is needed. You can even leave the car in Boulder and take the RTD NB bus up to Nederland to connect. See the Hessie Trailhead guide for trail details.

Eldorado Canyon State Park is a separate case: it uses timed-entry reservations on summer weekends and holidays, and it has its own state-parks fee and Eldo shuttle. See the Eldorado Canyon guide for how those reservations work.

Which trailheads fill first

On a warm summer weekend, the popular lots are gone by mid-morning. The two worst are the ones with shuttles for exactly that reason:

• Hessie Trailhead. The limited roadside parking along Fourth of July Road is usually full by 6 a.m. on weekends. Ride the shuttle from Nederland instead.
• Chautauqua. Parking is extremely limited on summer weekends and fills soon after 8 a.m. Take the Park-to-Park shuttle.
• Gregory Canyon and the Flagstaff lots. Small lots on a narrow mountain road that fill early and charge the OSMP fee.
• NCAR. A compact federal lot that fills on nice days, with overflow onto nearby streets.

The south Boulder trailheads (South Mesa, Marshall Mesa, Doudy Draw, Flatirons Vista) have larger lots and hold up better, though they still fill on the nicest weekends. Weekday mornings are quiet almost everywhere.

Parking tips for Boulder trailheads

• Come by 8 a.m. or ride a shuttle. The single most reliable way to get a spot at a popular trailhead is to arrive early. If you can't, the free shuttles remove the problem entirely.
• Put ParkMobile on your phone before you leave. Both the OSMP permit and Chautauqua paid parking run through it. Sorting it out in the parking lot with weak signal is no fun.
• Check your plate's county. Boulder County vehicles skip the OSMP fee. Out-of-county visitors, including many CU students and folks from Denver, need the permit.
• Go on a weekday if you can. The fees and the crowds are built around summer weekends and holidays. A Tuesday morning is a different, calmer Boulder.
• Have a backup trailhead in mind. If the lot you wanted is full, a nearby south Boulder trailhead or a shuttle stop is often minutes away. Don't circle a full lot.
• When in doubt, check the trailhead's own page. Rules and fees change by location and season. Each destination guide on this site lists current parking for that spot.

Where this parking applies

• Chautauqua Park: the Flatirons trailhead with summer paid parking and the Park-to-Park shuttle.
• Eldorado Canyon: timed-entry reservations and a state-parks fee, not the OSMP permit.
• Hessie Trailhead: tiny roadside parking, best reached by the free Nederland shuttle.
• All hikes in Boulder: the full hiking hub, with parking notes on each trail.
• Plan your visit: the basics before you head out.

Recommended nearby

A few local spots to fold into a trailhead morning.

Boulder trailhead parking FAQ

Sources

Fees, zones, and schedules on this page are drawn from these authoritative sources:

• City of Boulder OSMP: Parking Permits and Fees (permit prices and ParkMobile zones)
• City of Boulder: Park-to-Park Shuttle (Chautauqua paid parking and 2026 shuttle schedule)
• City of Boulder: Free Park-to-Park Shuttle Begins 2026 Season
• Boulder County: Hessie Trailhead and free shuttle
• City of Boulder OSMP: Rules and Regulations (parking fees and curfews)