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Best Trails

Royal Arch Trail

Boulder, CO

Royal Arch Trail is a 3.2 mile out and back trail located near Boulder, Colorado that features beautiful wild flowers and is rated as difficult. The trail is primarily used for hiking, mountain biking, trail running & walking and is accessible from May until November. Dogs and horses are also able to use this trail.

  • Best Hiking

  • Best Mountain Biking

  • Best Trail Running

Recent Reviews

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Hall Ranch
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12 Completed 2 Reviews

Good rocky trail for hiking, well kept with good views along the way. Even met a sizeable buck, Prarie dogs and rabbits. decided to take Bitterbrush up to the Nelson loop and then Nighthawk back. Nighthawk was a mistake. This trail is overgrown and we got caught in rain and the entire way back was a mudpit. Be very cautious of the entire hall Ranch area if there is a chance of rain or had recent rain, it will be a miserable muddy experience. In dry conditions, a great trail.

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Middle St. Vrain Trail
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147 Completed 10 Reviews

Beautiful trail! Well maintained and easy, with a little bit of everything for the senses...water, trees, wildflowers, meadows and mountain views. Hiked 4 miles in, to bridge crossing the creek, and returned the way we came. Highly recommend for a summer hike; looks like it would be a great winter snowshoe.

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Homestead Meadows
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78 Completed 11 Reviews

5/31/2014 - Lion Gulch Trailhead which leads to Homestead Meadows is closed due to the floods in 2013. There was trail work done this weekend but the middle section of the trail is still mostly destroyed.

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Hall Ranch
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13 Completed 2 Reviews

Nice for trail running, mtn bikers courteous n share the trail. One lazy rattlesnake last summer, jumped over him ans ran on....

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Button Rock Preserve: Sleepy Lion Trail
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4 Completed 2 Reviews

Word to the wise: Somewhere near the highest elevation of the loop, it is very easy to get onto another trail called the Button Rock Trail. It eventually (5+ miles) gets to another trailhead called Hall Ranch, at least 10 driving miles and a few ridges away from the parking lot at Longmont Dam. I got 2 miles down this path before turning back. Never did see where the Sleepy Lion & Button Rock divergence was marked. A gate simply said "you are leaving Button Rock Preserve" with no other options.

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Button Rock Preserve
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1 Completed 1 Reviews

Did this trail last week - we took the trailhead as marked on this map. Perhaps the reviewer below was thinking of one of the other trailheads.

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Hall Ranch
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3 Completed 2 Reviews

Great trail for horse back riding.

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Hall Ranch
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9 Completed 7 Reviews

This is one of my favorite front-range rides. Nice technical climb at the front end after which there is a gentle climb to the top for a loop with beautiful views.

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Lion Gulch
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7 Completed 2 Reviews

This hike was my first one since moving back to Colorado from Arizona. Went with my buddy and it was an awesome hike. We went early in the morning around 10 and it was not crowded at all. We hiked all the way to the top and explored one of the homesteads. The trail is small and enjoyable with a nice stream to follow with a lot of trees. It rained and hailed on us at the top but we hid behind a rock and ate lunch, it was a beautiful scene. Will hike this trail again sometime.

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Lion Gulch
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5 Completed 4 Reviews

One of my favorite hikes, have done it wary and late summer. Trail can get very soggy in early summer (May). Love the variety of the trail and the history with the homesteads!

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