Jon Tvedt
... that Jon Tvedt took up competitive mountain running in his late thirties, his career in orienteering having peaked several years earlier?
... that <b id="mwC5U"><a href="./Jon_Tvedt" id="mwC5Y" rel="mw:WikiLink" title="Jon Tvedt">Jon Tvedt</a></b> took up competitive <a href="./Fell_running" id="mwC5c" rel="mw:WikiLink" title="Fell running">mountain running</a> in his late thirties, his career in <a href="./Orienteering" id="mwC5g" rel="mw:WikiLink" title="Orienteering">orienteering</a> having peaked several years earlier?