Kix Brooks and Ronnie Dunn will ride Sea-Doos from Nashville to Memphis via the Cumberland and Mississippi rivers on Sept. 21 to raise money for St. Jude Children's Research Hospital. Once in Memphis, the CMA's long-running duo of the year will visit the hospital and play a benefit concert at Denim & Diamonds. Brooks made the trip, dubbed the "Churn and Burn," solo last year. Dunn bet his partner $10,000 that he wouldn't make it. Brooks did make it, and Dunn donated the bet money to St. Jude.