Ask around south Wales for a walk that over-delivers, and the Four Waterfalls Walk comes up almost immediately. Four proper waterfalls in one circular route, a gorge that feels far wilder than it has any right to, and a finale where you walk behind a curtain of falling water.

The walk itself is brilliant. The faff around it — where to park, how early to arrive, what the paths are actually like — is where most days out here go wrong. So here’s the version that skips the chaos.

Park at Cwm Porth, and aim for before ten

The walk sits in Waterfall Country, the wooded southern edge of Bannau Brycheiniog (the Brecon Beacons), near the village of Ystradfellte. The car park you want is Cwm Porth. It’s the closest to the route, it has toilets and a small kiosk for snacks and drinks, and parking cost £6 for the day when we last checked — cards accepted, though prices do creep, so treat that as a guide rather than a promise.

Here’s the catch: it’s small, it’s reached by a narrow single-track lane, and on a fine weekend it can be full by mid-morning. Arrive before ten and you’ll wonder what the fuss is about. Arrive at midday in August and you may be waved on to the overflow parking at Gwaun Hepste nearby — which adds a little distance to the loop and has been known to take cash only, so it’s worth having some on you just in case.

Before you set off, take two minutes to peer into the mouth of Porth yr Ogof below the car park — one of the largest cave entrances in Wales, and a suitably dramatic way to start.

The route, honestly

From Cwm Porth the circular route comes in at around four and a half miles, and the honest time to allow is three to four hours. On paper that sounds slow for the distance. In practice you’ll understand: the linking paths along the top are easy, wide forest tracks, but each waterfall sits down in the gorge, and the out-and-back drops to reach them are steep, rooty and rocky.

The four falls arrive in a satisfying crescendo: Sgwd Clun-Gwyn first, then Sgwd Isaf Clun-Gwyn, then Sgwd y Pannwr down at the quietest corner of the walk — and finally the headliner.

Sgwd yr Eira: the one you walk behind

The name means “waterfall of snow”, and it earns it. A long, knee-testing flight of steps winds down into the gorge, and at the bottom a rock ledge runs directly behind the falling water — one of the very few places in Britain where the path officially goes behind a waterfall.

You will get sprayed. That’s rather the point. Zip your phone away for the crossing, mind your footing on the wet rock, and enjoy one of the most cheerfully dramatic moments any Welsh walk has to offer. Then remember the steps you came down are now the steps you go back up.

Mud is not optional

This is a gorge walk in one of the wettest corners of Wales — dress for it. Proper footwear with grip is the difference between a great day and an undignified one; trainers with smooth soles end badly here. After heavy rain the falls are at their thunderous best but the paths are at their slipperiest; after a dry spell the water is gentler and the going far easier. Pick your trade-off, and pack a waterproof either way if you’re planning to stand behind Sgwd yr Eira.

A couple of sensible notes: the paths run above steep drops in places, so keep children close and dogs on leads, and however tempting the plunge pools look, the water is cold, the currents are real, and swimming at the falls is discouraged.

Make a day of it

The joy of this corner of the Beacons is that the walk is only half the plan. You’re twenty-odd minutes from some genuinely good post-walk food — we’ve ranked the best places to eat near the Brecon Beacons by exactly this kind of after-hill loyalty. If waterfalls have given you a taste for the country’s bigger days out, our guide to the best hikes in Wales is the natural next read — and if you prefer your drama quieter and stranger, Cwmorthin Quarry scratches a similar itch with a fraction of the crowds.

The practical bit

Worth the faff? Completely — this is the best waterfall day in Wales. Just get there before ten.