Arthur's Rock Trail – Lory State Park

Illustration of the region, not this trail.

• Distance3.6 mi
• Elevation gain1182 ft
• Leash ruleLeash required
• Water on trailSeasonal creek in the lower gulch; carry water
• SeasonYear-round; trails close in muddy conditions (check COTREX)
• ParkingTrailhead lot at road's end fills on weekend mornings; overflow at Timber and other lots means a longer walk
• Fee$10–$12 daily vehicle pass (Colorado plates) or $4 walk-in; Keep Colorado Wild pass accepted
• RestroomsVault toilets at the major trailheads; no drinking water
• Managed byColorado Parks & Wildlife

Arthur's Rock is the Lory State Park classic: 1.7 miles and about 1,200 feet up a shaded gulch, then across an open shoulder to a granite knob with a view over Horsetooth Reservoir and Fort Collins. It is hikers-only, which keeps it calmer than the Horsetooth Mountain trails next door, and CPW allows leashed dogs the whole way. The final 30 feet are a rock scramble; most dogs manage it but short-legged ones will want a boost or a stop at the base. Summer afternoons are hot on the upper half. The park closes trails when muddy, so look at COTREX after spring storms.

After the hike

More trails near Fort Collins

• Horsetooth Rock Loop

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• Horsetooth Falls Loop

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• Devil's Backbone Wild Loop

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All dog-friendly hikes near Fort Collins → · Fort Collins dog guide