Whakakī i te rerenga e whai ake nei: Ko te tīmatanga o Vernon i te whakataetae hakinakina o te ao i te 2004 IAAF World Cross Country Championships i reira i whakataetae ai ia i te whakataetae 8,000-mita a nga taane rangatahi; ka mutu i te 64th i roto i te waa o 27minutes and 12seconds. Ko te whakataetae a-ao a Vernon i muri mai ko te 2005 IAAF World Cross Country Championships i reira ka whakataetae ano ia i te whakataetae a nga taane rangatahi, i tenei wa ka mutu i te 48th. I te 2005 European Athletics Junior Championships i whakataetae ia i roto i te 5000meters; ka mutu i te 4th i roto i te waa o 14minutes and 27seconds. I te Tihema 2005 i wini ia i tana mētara tuatahi o te ao i te European Junior Cross Country Championships ka mutu i te tuarua i muri i a Barnabás Bene o Hungary. Kātahi ka whakataetae ia i te
2007 European Cross Country Championships a ka mutu te 3 i te whakataetae o nga taane i raro i te 23. I te 2007 European Athletics U23 Championships i whakataetae a Vernon i te 5000meters ka mutu te tuawhitu i te waa 13minutes and 59.24seconds. I whakataetae a Vernon i te 2008 World University Cross Country Championships, ka mutu te tuaono. I te tau 2008 ko te 2008 IAAF World Cross Country Championships i mutu ai a Vernon i te 115th i te whakataetae 12kilometers o nga taane pakeke. Ko tana whakataetae nui e whai ake nei ko te 2008 European Cross Country Championships i reira i whakataetae ai ia i te whakataetae a nga taane i raro i te 23. Ko ia te tuarua i muri i te Itariana Andrea Lalli. I whakataetae a Vernon i tana tuawha o nga Whakataetae o te Ao Cross Country i te putanga 2009. I whakataetae ia i te whakataetae a nga kaumatua a ka mutu i te 78th. I te 2009 European Cross Country Championships i Dublin i whakataetae a Vernon i te whakataetae pakeke a nga taane; ka mutu te 12th.