According to Official Guinness Records,
The record for the most consecutive cartwheels in a kayak is 264, set by Koya Morita (Japan) at Tama River, Ome-shi, Japan on 17 August 2003.
One cartwheel is one complete 360 degree rotation.
For a complete list of 2003 records, please visit 2003 Guinness Records in Japan.