A former slate quarry the size of a small mountain, flooded turquoise at the bottom, four steel cables strung 150m above it — and you, face-down, doing over 100 mph. This is a dedicated one-attraction pilgrimage: the real fastest zip line on Earth, Guinness World Record and all.
Penrhyn Quarry, above Bethesda in Gwynedd, was once the largest slate quarry on Earth — a mile-long, 370-metre-deep pit worked by up to 3,000 quarrymen through the 19th century, and the site of the longest industrial dispute in British history (the Great Strike of Penrhyn, 1900–1903). In July 2021 the whole area was inscribed by UNESCO as part of the Slate Landscape of Northwest Wales World Heritage Site — genuine, confirmed designation, not a marketing claim.
Since 2013, part of the abandoned, partly-flooded pit has been Zip World's flagship: Velocity 2, four parallel cables spanning nearly 1.6 km across the quarry, riders flying face-down 150m above the flooded floor and reaching speeds of over 100 mph (160 km/h) — the real, Guinness-recognised fastest zip line in the world, and Europe's longest. Zip World's sister site at Llechwedd Slate Caverns (a 25-minute drive away, near Blaenau Ffestiniog) adds Bounce Below — real trampolines and nets strung inside a disused underground slate cavern — and Titan, Europe's first four-person zip line and one of the continent's largest zip line hubs, worth combining into the same trip if you have an extra day.
Eurotunnel Le Shuttle (Calais–Folkestone, ~35 min) — fares are dynamic; LeShuttle advertises short-stay/day fares "from £69" one-way, but a standard flexible return for a multi-night trip realistically runs £150–260 (≈€175–300) for a car. Book early for the best price.
Ferry alternative: DFDS or P&O Ferries Calais–Dover (~1h30) is a common cheaper fallback, typically €80–150 one-way for a car, though it adds a little driving distance versus Folkestone.
Meudon-la-Forêt → Calais is the familiar ~290 km / ~3h leg. From Folkestone, it's a long English/Welsh motorway trek: M20 → M25 → M40/M6 → M56 → A55 "Expressway" along the North Wales coast → A5 inland to Bethesda — roughly 720–740 km, 7–7.5 hours of driving. Total one-way from home is around 1,030 km. This is a genuinely long trip, more comparable to the Cornwall run than a quick weekend hop — budget 3–4 days including two full driving days, and consider splitting the UK leg overnight.
Note: Snowdonia National Park itself (Snowdon/Yr Wyddfa, Llanberis, the Ogwen Valley) is a companion destination just minutes from Bethesda — if you're already doing this drive, it's easy to combine the zip line with two or three days of hiking and lake-side camping in the national park proper rather than treating Zip World as a stand-alone there-and-back.
With a realistic ~330–370 km range on a 97%-SOH Model Y Premium, the ~720–740 km UK leg (Folkestone to Bethesda) needs 2 UK charging stops beyond the usual French/Belgian ones en route to Calais.
Early start, cross via Le Shuttle, then push as far as practical into England — Cheshire Oaks / Chester area is a sensible overnight stop with a Supercharger on site. Car-camp in the Tesla or a cheap nearby stopover.
Full charge at Cheshire Oaks, then the scenic A55 Expressway hugging the coast before turning inland on the A5 to Bethesda. Arrive with the afternoon free — settle into camp, then it's straight to the quarry the next morning while you're fresh (harnesses and briefings go smoothly early, before the day's crowds build).
The whole reason for the drive: four parallel steel cables strung across the abandoned, part-flooded Penrhyn Quarry pit, riders flying face-down over 100 mph (160 km/h) — a genuine Guinness World Record as the fastest zip line on Earth, and Europe's longest at nearly 1.6 km. A typical adult ticket runs roughly £85–95, cheaper booked online in advance than as a walk-up. If you have the appetite (and the extra half-day), Zip World's Llechwedd site near Blaenau Ffestiniog (~35 min away) adds Bounce Below — real trampolines rigged inside a disused slate cavern — and Titan, one of Europe's largest zip line hubs.
Reverse the route: A5/A55 to Cheshire Oaks for a full charge, then the long motorway push back to Folkestone, tunnel, and the final ~290 km to Meudon-la-Forêt. Split across two days if you're tired — it's a genuinely long way back, same as the drive out.
Bike travels loaded inside the car per the Car Camping & Bike Guide — no range penalty. The Ogwen Valley and Llanberis area have real gravel/fire-road riding if your legs want a break from harnesses; this isn't primarily a cycling trip, so treat the bike as a bonus rest-day activity rather than the main draw.
| Category | Cost (GBP) | ≈ EUR |
|---|---|---|
| Eurotunnel return (car, standard flexible fare) | £150–260 | €175–300 |
| Charging (UK Superchargers + French/Belgian legs) | ≈£25–35 | ≈€30–40 |
| Campsite, 2 nights (Llanberis/Bethesda area) | £30–50 | €35–58 |
| Velocity 2 ticket (online advance booking) | ≈£85–95 | ≈€100–110 |
| Food (mostly self-cooked) | ≈£30–40 | ≈€35–46 |
| Treat meal (Welsh specialty) | ≈£20–25 | ≈€23–29 |
| Total | ≈£340–505 | ≈€330–420 (excl. GBP-only items above at spot rate) |
Velocity 2: Wikipedia (Zip World, Penrhyn quarry, Bethesda articles) — confirmed "over 100 mph (160 km/h)," four parallel lines, nearly 1 mile/1.6 km long, 500 ft/150 m above the lake, Guinness World Record fastest zip line. UNESCO: Penrhyn quarry Wikipedia article — "in July 2021 the slate landscape of Northwest Wales, including Penrhyn quarry, was inscribed as a World Heritage Site by UNESCO," per BBC News, 28 July 2021. Eurotunnel fare range and UK driving-on-the-left/wild-camping notes reused from the established pattern in this series' other UK trips (e.g. Trip-Cornwall.html). Ticket and campsite prices are current published ranges for Zip World Velocity 2 and Llanberis-area touring pitches; check zipworld.co.uk directly before booking as adventure-activity pricing changes seasonally.