Junior years Competing at the
Junior World Orienteering Championships, Ikonen helped Finland win medals in the relay in 1998, 1999, and 2000, as well as winning an individual silver medal in the long distance in 2000. He won a silver medal in the sprint at the same championships. He won a gold medal in the relay with the Finnish team at the 2002
European Orienteering Championships in
Sümeg, Hungary. He became Nordic champion in 2003, by winning the middle distance at the Open Nordic Orienteering Championships (NOC) held in Flen, Sweden. He placed tenth overall in the 2006 World Cup. and won a silver medal in the relay at the 2007 Open Nordic Orienteering Championships held in
Bornholm. He placed ninth overall in the 2008 Orienteering World Cup, coming third in two races. He placed eleventh in the
sprint distance at the 2009 World Games. In 2010 he placed third in the Jukola relay with Vaajakosken Terä. In the 2011 World Cup he obtained one race victory and one second place in the individual races, and placed sixth overall in the cup. In the 2012 Jukola relay he placed seventh with his club Vaajakosken Terä. ==Style of orienteering==