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Routes in The Coliseum

Gladiator T 5.11b 6c 23 VIII- 23 E3 5c
Handcrack-a-rete T 5.7 5a 15 V+ 13 MVS 4b
Hollow Man T,S 5.8 5b 16 VI- 15 HVS 4c
Ionic Column T,S 5.10b/c 6b 20 VII 20 E2 5b
Lion's Face, The T 5.7 5a 15 V+ 13 MVS 4b
Lost in Time T,S 5.10b 6a+ 19 VII- 19 E2 5b
Planetary Pull T 5.7 5a 15 V+ 13 MVS 4b
Unleash The Lions T 5.7 5a 15 V+ 13 MVS 4b
Vrainavore T 5.10a 6a 18 VI+ 18 E1 5a
Wrinkle in Time T 5.9- 5c 17 VI 16 HVS 4c
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Description [Suggest Change]

The Coliseum lies in the midst of a collection of crags referred to as The Talus Fields in Bernard Gillett's new guide. Climbs on The Coliseum itself are north-facing and lay in the shade throughout most of the day making this an excellent summer crag. Established climbs on this feature range from about 5.7 to 5.11 and contain a mixture of traditional protection and bolts. Most routes top out at about 200' and have bolted belay stations.

Although this wall contains some quality climbs, the traffic appears to be limited. This may be due to the longer approach or because of quality walls located nearer to Lyons. Despite being only a 15 to 20 min hike from the road, this wall has a more wild feel - on any one climb, you may find loose rock, lichen and bushy vegetation. But, as Gillett points out, this is just the entry fee for all new routes (most of these routes were established around 2001 and 2002).

Getting There [Suggest Change]

To get there, park at the pullout located approximately 7.9 miles from Lyons on the south side of the road. This pullout resides on a curve in the road and is 0.2 miles [up] the road from the Upper Rest Area (also located on the south side of the road). The Coliseum will not be visible from the pullout. According to Gillett, you should travel about 50 yards up the road and cross near some grey boulders, just above which will be located a cairn marking the start of a "well marked trail" that actually runs between another formation (The Arch of Titus) and The Coliseum. The well marked trail consists of downed branches forming a little path and some cairns (not entirely as obvious as the description would suggest as there are downed branches everywhere). About 200' up the trail, the trail will split - take the left branch toward the now obvious talus field across a ravine. I also found that, being a bumbler, one could also just kind of hack their way up the ravine itself after crossing the river toward the talus field. Either way, once at the base of the talus field the wall should be apparent and one can either traverse the talus itself or cross under the field to approach the wall. With the former option, keep your partners prone to trundling below you as the talus is loose and it is not unlikely that one could knock off fair size block if one is not careful.

Mountain Lion Alert

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Good-sized mountain lions have been seen in the area.

10 Total Climbs

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Classic Climbing Routes at The Coliseum

Mountain Project's determination of the classic, most popular, highest rated climbing routes in this area.
5.7 5a 15 V+ 13 MVS 4b
Trad 2 pitches
5.7 5a 15 V+ 13 MVS 4b
Unleash The Lions
Trad 2 pitches
5.8 5b 16 VI- 15 HVS 4c
Hollow Man
Trad, Sport 2 pitches
5.10a 6a 18 VI+ 18 E1 5a
5.10b 6a+ 19 VII- 19 E2 5b
Lost in Time
Trad, Sport 2 pitches
Route Name Location Star Rating Difficulty Date
5.7 5a 15 V+ 13 MVS 4b Trad 2 pitches
Unleash The Lions
5.7 5a 15 V+ 13 MVS 4b Trad 2 pitches
Hollow Man
5.8 5b 16 VI- 15 HVS 4c Trad, Sport 2 pitches
5.10a 6a 18 VI+ 18 E1 5a Trad
Lost in Time
5.10b 6a+ 19 VII- 19 E2 5b Trad, Sport 2 pitches
More Classic Climbs in The Coliseum »

Weather Averages

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Prime Climbing Season


Loveland/Vail, CO
climber76   Loveland/Vail, CO
The Coliseum would be a good area for working on hand crack skills. Hollow Man, Handcrack-a-rete, Planetary Pull, and Galdiator (to the tree) all have excellent sections of 5.7/5.8 jamming for 50-70 foot stretches. Jul 2, 2012
Kevin P
Kevin P   Loveland
If you hit mile marker 25, heading up the canyon, you went a little too far. Jul 22, 2012
Note that there is now a nicely cairned trail that skirts the right hand side of the talus field as you're going up to Coliseum. This seems much more solid than tackling the talus field head on. Aug 6, 2012
Tony B
Around Boulder, CO
Tony B   Around Boulder, CO
Considering that so many people go here, I am surprised at the lack of attention/traffic at The Pantheon, the obvious 200' tall chunk of NW facing rock just uphill. Went there Sunday and had it to ourselves, linking pitches to do all the routes as single pitch trad and mixed lines. The place will clean up (lichen on a few lines) a little more with some traffic, but it is already good/worth doing. I'll put it on line over the next day or two. Aug 5, 2013
Loveland, CO
Mathias   Loveland, CO
In an effort to help people find the approach: the pullout is a big loop on a fairly large turn, just a little ways past mile marker 25. A little farther along the road, there is now a Tyrolean traverse across the river (thanks to whomever installed that). Once across the river, go left up the ramp, and you'll find the trail pretty quickly. Apr 23, 2016
Savannah R
Fort Collins, CO
Savannah R   Fort Collins, CO
We were up here yesterday, and a good size mountain lion wandered up the trail mid-afternoon. He/ she appeared well fed and didn't seem to think much of us, but be aware of your surroundings when in the area. Jun 5, 2018

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