It was a downward spiral for "The Amazing Race's" Chelsea Day and Robbin Tomich on Thursday night, ending with the childhood best friends throwing in the towel for a chance to take a swim in Slovenia before meeting host Phil Keoghan at the Pit Stop. The 41-year olds from Washington began Leg 9 in last place after Chelsea struggled with the Roadblock. From there, navigation hell made for an impossible comeback. "You don't ever want to give up on the race, but getting lost on our way to Pivka Jama was the nail in the coffin for us," Chelsea tells Gold Derby. Watch our exclusive video interview above. "By the time we got to the caves we didn't run. We just enjoyed how absolutely stunning that place was."