You can bet that Libby Costello, Sophia Denison-Johnston, Brooke Downes and Adrienne Smith were exhausted, achy and very, very tired when they landed their row boat in Honolulu, says the Association of Mature American Citizens [AMAC]. They had been rowing nonstop after leaving San Francisco 34 days, 14 hours and 11 minutes earlier in hopes of breaking the record for the 2,400 nautical mile jour...