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Routes
Hiking trails & Routes
United States
Colorado
Boulder County
Boulder

Royal Arch Trail

Moderate

3.4

(22)

76

hikers

Royal Arch Trail

02:27

6.70km

410m

Hiking

If you're looking for a rewarding hike with diverse scenery, the Royal Arch Trail offers a moderate challenge over 4.2 miles (6.7 km). You'll climb 1359 feet (414 metres) in elevation, typically taking around 2 hours and 26 minutes to complete. The route winds through shaded forest patches and Bluebell Canyon, presenting a mix of soft dirt, roots, and large boulder steps. As you ascend, you'll encounter smooth sandstone slabs leading to the iconic Royal Arch, a natural formation that frames stunning views of Boulder and the Flatirons.

The Royal Arch Trail begins at Chautauqua Park, a popular starting point for many Boulder hikes. Be prepared for a demanding ascent, especially with the steep climbs over rock stairs. Weekends can be particularly crowded, so consider an early start or visiting on a weekday if you prefer a quieter experience. Always practice wildlife safety, as bears and mountain lions are known to inhabit this area.

This trail is widely considered a difficult hike due to its significant elevation gain and varied terrain, making it a serious workout. It stands out in the Boulder Open Space and Mountain Parks for its unique geological feature, the Royal Arch, which provides a natural window to the landscape. The panoramic views from the arch extend far beyond the city, reaching towards the majestic Rocky Mountains.

Last updated: April 23, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Boulder Open Space and Mountain Parks

Waypoints

A

Start point

Parking

Get Directions

1

219 m

Chautauqua Park

Highlight • Rest Area

Providing backdoor access to the Boulder Open Space and Mountain Parks trails, Chautauqua Park offers and area to access and view nature just at the foot of the city of Boulder. There is also a children's park and turf field.

Tip by

2

438 m

Chautauqua Trailhead

Highlight • Trail

Great parking lot right next to the trailhead. Paid parking starts at 8AM ($2.50 an hour.

Tip by

3

744 m

View of Flatirons

Highlight • Viewpoint

This spot on the trail offers a great viewpoint of the Flatirons. The Flatiron climbing trails can be easily accessed by Chautauqua Park, but these scrambling routes take more planning to tackle than a standard hike.

Tip by

4

1.45 km

View from the Bluebell Spur Trail

Highlight • Viewpoint

Right before the end of Chautauqua Trail you get a beautiful view through the trees.

Tip by

5

3.00 km

Royal Arch Trail

Highlight (Segment) • Mountain Pass

The hike towards the Royal Arch in Chautauqua necessarily passes through Sentinel pass, which with its shape and its location, could be renamed "Sentinel Ridge".

Tip by

6

3.49 km

Royal Arch

Highlight • Natural Monument

This natural stone arch will rewards you with great views of Boulder and the Flatirons.

Tip by

B

6.70 km

End point

Parking

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Way Types & Surfaces

Way Types

5.86 km

518 m

279 m

< 100 m

Surfaces

3.97 km

1.91 km

407 m

234 m

184 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (2,090 m)

Lowest point (1,740 m)

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Weather

Powered by Foreca

Thursday 7 May

14°C

2°C

17 %

Additional weather tips

Max wind speed: 12.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

How difficult is the Royal Arch Trail?

The Royal Arch Trail is generally considered a difficult hike. While relatively short, it involves a substantial elevation gain of around 1,400 feet over 3.2 to 3.5 miles round trip, making it a challenging workout. Expect steep climbs, especially over rock stairs after a creek crossing, and varied terrain.

Where does the Royal Arch Trail start, and what are the parking options?

The trail typically starts from Chautauqua Park, a well-known starting point for many Boulder trails. You can access the trail from the Chautauqua Trailhead. Parking can be challenging, especially on weekends, so arriving early is recommended. Consider using public transport or shuttle services if available during peak times.

What kind of terrain can I expect on this hike?

The Royal Arch Trail features varied and demanding terrain. You'll encounter loose rocks, tight switchbacks, and large boulder steps. The path shifts between soft dirt, roots, and smooth sandstone slabs, requiring steady footing. Sections wind through shaded forest, while others present steep climbs over rock stairs, particularly through Bluebell Canyon.

What are the main highlights and viewpoints along the route?

The absolute highlight is the Royal Arch itself, a spectacular natural sandstone arch that frames the city of Boulder and the iconic Flatirons. Along the way, you'll get incredible views of the Flatirons, especially from the Bluebell Spur Trail, and panoramic views extending to the Rocky Mountains from the arch. The beauty of Bluebell Canyon is also a significant scenic element.

What is the best time of year to hike the Royal Arch Trail?

The Royal Arch Trail can be hiked year-round, but each season offers a different experience. Summer is popular for its warm weather and the chance to see wildflowers. Fall brings beautiful foliage. Winter hiking is possible but requires appropriate gear for potentially icy or snowy conditions. Spring can be muddy. Weekdays are generally less crowded than weekends.

Are dogs allowed on the Royal Arch Trail?

Yes, dogs are generally allowed on trails within Boulder Open Space and Mountain Parks, including the Royal Arch Trail. However, they must be on a leash at all times. Always check the latest regulations from Boulder Open Space and Mountain Parks for any specific restrictions or seasonal closures.

Do I need a permit or is there an entrance fee for the Royal Arch Trail?

No, there is typically no entrance fee or permit required to hike the Royal Arch Trail itself, as it is part of the Boulder Open Space and Mountain Parks system. However, parking at Chautauqua Park may require payment during peak seasons or times. Always check the official Boulder Open Space and Mountain Parks website for the most current information on parking fees and regulations.

What are the general regulations for Boulder Open Space and Mountain Parks?

When hiking in Boulder Open Space and Mountain Parks, including the Royal Arch Trail, it's important to follow Leave No Trace principles. Stay on marked trails, pack out all trash, and respect wildlife. Dogs must be leashed, and bicycles are generally not permitted on hiking-only trails. For detailed and up-to-date regulations, including wildlife safety and seasonal closures, please consult the official Boulder Open Space and Mountain Parks website.

Does the Royal Arch Trail connect with other trails?

Yes, the route to the Royal Arch Trail intersects with and utilizes sections of several other well-known paths within the Boulder Open Space and Mountain Parks system. These include the Bluebell Spur Trail, Bluebell Hiking Trail, Chautauqua Trail, and Flatirons Loop Trail, among others. This allows for various route combinations and extensions if you wish to explore further.

Is the Royal Arch Trail suitable for beginners or families with young children?

Due to its significant elevation gain and challenging, varied terrain, the Royal Arch Trail is generally not recommended for beginners or families with very young children. It's often rated as 'hard' or 'advanced' and requires a good level of physical fitness. There are many other beautiful and less strenuous trails in Chautauqua Park that might be more suitable for those seeking an easier hike.

What wildlife might I encounter on the trail?

The area around the Royal Arch Trail is home to various wildlife. While sightings are not guaranteed, hikers should be aware that bears and mountain lions inhabit the region. You might also spot deer, various bird species, and smaller mammals. Always maintain a safe distance, never feed wildlife, and know what to do in case of an encounter.

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Trail Reviews

Susanne B.
October 11, 2022, Boulder, Chautauqua Park – Royal Arch Trail

The tour requires some climbing skills, but the views and fun make it worth the effort!

Translated by Google
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