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Moped Trip - 18660 km by moped
mopedtrip.com
In the summer of 1978 I (Walter Muma) undertook a 3-month 11,500-mile (18,660 km) journey by moped from Toronto (Ontario, Canada) to Yukon (Canada), Alaska (USA), and up the Dempster Highway to Inuvik, NWT (Canada), and back to Toronto.
This was the longest journey ever made on a true unmodified moped, until 2007.