K3 Zipline

K3 launches from a small platform called the Nest, high on the Klein Swartberg above the wheat and canola country outside Caledon, and runs in one unbroken span to a landing tower beside the N2 some five kilometres from town. Its operator, SA Forest Adventures, puts the cable at 3.2 km and calls it, flatly, the world's longest zipline; South African media from Eyewitness News to News24 have reported it the same way since it opened in September 2024. Guinness World Records has not ratified that — its longest-zip-wire entry still names the Jebel Jais Flight in Ras Al Khaimah at 2,831.88 m, certified in 2018 and unchanged when checked in August 2026. The domestic ranking, though, is not in question: at 3.2 km, K3 is comfortably longer than Sun City's two-kilometre Zip 2000 in North West, which had been South Africa's benchmark since 2004.

Getting to the start is half the outing. From base camp, groups climb roughly 7 km of mountain track over about an hour, either in small 4x4s or aboard "Big Red", a twenty-seater trailer hauled by a tractor. The route crosses fynbos that the operator says holds the only known population of the Critically Endangered rough moss frog — a claim that squares with the scientific record, which knows Arthroleptella rugosa from the Klein Swartberg and nowhere else on earth. A short, steep walk from the summit reaches the Nest, and from there it is one rider at a time. About two hundred metres out from the platform the ground drops away; the operator puts the deepest air gap at roughly 500 m. Speed depends on body weight — the operator quotes 120 to 150 km/h — and the flight ends at a landing platform with a twelve-metre staircase down to the coffee shop.

The line exists because of a passing remark. Clinton Lerm, who runs SA Forest Adventures, was told by a tourist that his Mossel Bay zipline was the longest over open ocean, and set about building the longest one full stop — K3 is the seventh zipline his company has built. News24 reported that Lerm found the site by chance, catching the late sun on a Klein Swartberg ridge while driving home the slow way, and meeting the landowner, farmer Jan Fick, minutes later. A second phase — a five-kilometre line on the same property — has been talked about since 2021 but had not been built as of August 2026.

Capacity is small by design and priced accordingly, at R1,800 per person at the time of writing, with advance booking strongly advised. Riders must weigh between 40 kg and 120 kg; pregnancy, heart conditions and any suspicion of intoxication are all bars to flying. As at Mossel Bay, wind governs everything — strong wind or rain can bring weight restrictions or close the line, with a year-long voucher rather than a refund. The Overberg's own calendar argues for spring: the canola comes into full yellow across these fields from late July into September, which is when the view from five hundred metres up is at its most improbable.