Compernolle finished thirteenth at the 2002 European Championships and tenth at the 2006 European Championships.
He also competed with less success at the 2001 World Championships, the 2004 Olympic Games as well as three editions of the World Cross Country Championships. He died on 16 June 2008 after an army truck, on which Compernolle was a passenger, crashed in Aartrijke, Belgium. 1500 metres - 3:40.50 minimum (2005)
Mile run - 4:06.21 minimum (2002)
3000 metres - 7:50.32 minimum (2002)
5000 metres - 13:14.75 minimum (2004)
10,000 metres - 29:15.96 minimum (2006).