Porters Pass and Colliers Causeway Circuit

Overview

This is a classic Blackheath loop that strings together Centennial Glen, Walls Ledge, Porters Pass, and Colliers Causeway for a compact hit of Blue Mountains drama. Expect towering sandstone cliffs, under‑cliff traverses, ferny gullies, and working waterfalls when it’s been raining. It’s a loop of about 3.9 miles total with roughly 1,000 feet of climbing, and it feels like a greatest‑hits sampler in 3–4 unrushed hours.

Route and Experience

Start from the Centennial Glen carpark at the end of Centennial Glen Road. A short service trail funnels you onto singletrack that quickly tucks under the cliff line at Walls Ledge, where you’ll likely see rock climbers above. The path undulates along narrow ledges and benches before linking to the historic descent/ascent of Porters Pass—home to hand‑carved stone steps dating to 1888—then wraps around beneath massive orange‑hued walls on Colliers Causeway.

Surfaces are natural and varied: dirt, rock, tree roots, sandstone steps, and occasionally muddy patches after rain. It’s well‑defined but can be uneven and slippery, especially beneath the cliffs and near the falls. Steeper work is concentrated around Porters Pass; there’s no technical scrambling, just real stairs and honest gradients.

Scenery and Nature

You’ll get a constant mix of sandstone escarpments, shaded rainforest gullies, and open viewpoints with sweeping looks across the valleys. Waterfalls in the Centennial Glen system enliven the loop, especially after wet weather. Birdlife is active here; keep an eye (and ear) out for the distinctive calls and scratchings of Lyrebirds.

Difficulty and Who It’s For

Call it a solid moderate (about 6/10). If you’re comfortable with uneven footing, narrow ledges, and a decent stair workout, you’ll be in your element. Newer hikers will manage with patience and good shoes; trail runners and seasoned walkers will find it an “easy win” with excellent variety.

Best Time to Hike

Year‑round works. Spring brings wildflowers and lively waterfalls; summer’s shaded gullies take the edge off heat if you start early and carry water. Autumn is crisp with clear views. Winter can be cool and misty—atmospheric, but expect slick rock underfoot. For big views, pick a clear day; after rain, come for the waterfalls and accept slower, slipperier going.

Logistics and Tips

• Parking is free at Centennial Glen carpark; arrive early on weekends when climbers flock to Walls Ledge.
• Footwear matters: sturdy shoes with grip beat casual trainers here.
• Bring water, snacks, a light layer, and a small first‑aid kit; the route feels close to town but it’s still real bushwalking.
• These tracks sit within a local network managed by the city council and connect seamlessly with nearby routes; signage is decent, but a map or GPS helps in fog.
• No permits or fees needed for a day walk.

Bottom Line

If you want Blue Mountains cliffs, waterfalls, history, and views in a half‑day loop right from Blackheath, this circuit absolutely delivers—compact, varied, and consistently interesting without being a sufferfest.