According to Official Guinness Records,
The fastest 10 m (32.81 ft) by a guinea pig was achieved by Flash, who ran the distance in 8.81 seconds, in London, UK, on 27 July 2009.
Record was attempted by ten guinea pigs throughout the day, individually, with Flash clocking the fastest time.
For a complete list of 2009 records, please visit 2009 Guinness Records in United Kingdom.