In 1999, Petter Renäng won the important international junior race Trofeo Karlsberg in Saarland . From the following year he rode for the cycling team Crescent . In 2001 he won the road race for the Scandinavian open championship. In 2003 he moved to Bianchi Scandinavia . A year later he became the Swedish road champion and won the Östgötaloppet , one of the oldest road races in Sweden. He then switched to the German Continental Team Comnet-Senges and became the Swedish time trial champion that year. In 2006 he drove for the current Belgian UCI ProTeam Unibet.com and then ended his career.
Petter Renäng is the older brother Viktor , who was also a cyclist.