Ex-Royal Marine Jonathan Thomson, in his 80th year, has completed his fifth and final epic cycling challenge for PTSD Resolution, the charity for forces veterans’ mental health. The ‘Pyrenees 24′ challenge was a gruelling 435 miles (700kms) with an astonishing elevation gain of 35,832 feet. This equates to cycling from London to Edinburgh and 1.23 times the height of Mount Everest from sea level.