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 also competed in Belgium's domestic cross country series, the Lotto Cross Cup, and won the series in the 1999–2000 season.
- 1500 metres - 3:40.50 min (2005)
- Mile run - 4:06.21 min (2002)
- 3000 metres - 7:50.32 min (2002)
- 5000 metres - 13:14.75 min (2004)
- 10,000 metres - 29:15.96 min (2006)
- Palmares (in French). Lotto Cross Cup. Retrieved on 2010-02-06.
- Sad death of Belgian runner Tom Compernollie (sic) - European Athletics Association, 18 June 2008