A stone mason who thought he’d never walk again after being left paralysed from the waist down in a work accident has completed his own adapted triathlon event.<br /><br />Martyn Piercy, 47, who broke his back and neck in 2015, spent three months training for his cycle, walk and swim challenge with his cousin Stephen Piercy, 42.<br /><br />He began at 8am with a 100m walk in callipers across his back garden while Stephen set off on a six-mile run, which they both completed in roughly an hour.<br /><br />The pair then took to the road for a 15-mile cycle ride before heading over to their local pool, where Martyn completed a 500m swim while Stephen swam 750m.<br /><br />