Tom Davies [GeoWizard] (via YouTube)

Truly in the style and spirit of Challenge Robin / Challenge Robin II, this sweary idiot decides to try to cross Wales in as close as possible to a completely straight line, cutting through dense woods, farms, rivers, hedgerows and back gardens. Cut up by barbed wire, stung by nettles, swimming through freezing rivers, and chased by farmers, it makes for gruelling, hilarious watching. Link is to the four-hour playlist; put it on in the background.