"Blerg challenges climbers with its unique start atop a shark fin and delicate slab moves that test smearing skills. With solid bolting and a modest single pitch, it’s a worthy sport route for anyone exploring Elevenmile Canyon’s quieter walls."
Blerg at Arch Rock offers a compact yet compelling sport climb that invites both newcomers and experienced climbers to engage with Elevenmile Canyon’s rugged character. Situated just off the main flow, this 75-foot route begins boldly on a distinctive shark fin formation — an unusual but accessible feature that immediately draws your focus. The fin itself rises sharply, daring climbers to trust delicate smears and edges that require quiet footwork and confidence. Starting ten feet left of the nearby Greetings from Butchers Hill route, Blerg carves a line that blends subtle movement with strategic rest spots.
The approach is straightforward, and the rock's texture shifts between gritty smearing on uncertain edges near the slab crux, to more secure holds on the upper pitches. This crux demands balanced weight distribution and calm precision since the edges can feel fragile and might flake under too much force. Beyond this section, the climb rewards you with a roomy ledge to catch your breath before weaving up and left past the last bolts, then a final traverse right to a two-bolt anchor.
Protection is well appointed with seven bolts leading safely to the anchors, so sport climbing gear will suit you best here with no need for additional traditional gear. The rock quality, while generally solid, asks climbers to avoid the more fragile flakes to the left, keeping movements focused and deliberate.
Elevenmile Canyon’s Arch Rock provides a setting that is both scenic and practical — an accessible destination for afternoon climbs or an introduction to the sport routes in the South Platte area. The route’s positioning lends itself to a good mix of sun and shade depending on the season, making it adaptable for early spring or fall climbing. While this is a single pitch climb, the character-packed movements and the tactile interaction with the rock make Blerg a worthy stop for those passing through Colorado’s climbing corridors.
Hydration and proper footwear with solid rubber will help maximize friction on the slab’s tricky smears. Given its moderate grade of 5.8, Blerg offers an approachable challenge framed by natural features that push technique without overwhelming power. Keep an eye on weather conditions, especially in shoulder seasons, when rapid temperature changes can affect grip and rock stability.
All in all, Blerg stands out as a route to test footwork finesse and slab confidence in one of Elevenmile Canyon’s lesser-visited corners, making it a practical and rewarding climb for those eager to explore sport routes beyond the usual hotspots.
Be cautious of fragile flakes along the left side of the climb that can break unexpectedly. The slab section’s small edges also demand careful foot placement to avoid slips. Ensure helmet use to protect against occasional loose rock on the approach and route.
Start directly on the shark fin for the smoothest line.
Avoid the fragile flakes on the left side of the route to prevent holds breaking.
Wear sticky-soled climbing shoes to handle delicate smears on the slab.
Check weather forecasts as the canyon can change rapidly, affecting rock friction.
The climb is protected by seven bolts leading to a two-bolt anchor, making a standard sport climbing rack sufficient—no trad gear needed.
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