According to Official Guinness Records,
Mauro Guenci (Italy) covered 38.632 km (24.004 miles) on inline skates in one hour on a road circuit at Senigallia, Ancona, Italy, on 11 June 2005. Mauro did 36 laps to reach this result on a 1088.60 m long track. Mauro Guenci, a fireman in his normal life, is record holder for the most distance in 24 hours as well. This record was organised in conjunction with the traditional Roller Day by the Team Roller Senigallia, of which Mauro is a member.
For a complete list of 2005 records, please visit 2005 Guinness Records in Italy.