In accordance with USA Track and Field (USATF) official rules and regulations, the Kiawah Island Golf Resort Marathon's official time is based on the gun time. Consequently, all race results and awards are based from the gun start and not the runners chip time.
2012 USATF Competition Rules
245.3, "The official time shall be the time elapsed between the start of the watches or timing devices resulting from an appropriate start signal and when the athlete reaches the finish line. The actual time elapsed between when an athlete reaching the starting line and finish line can be made know to the athlete, but will not be considered as the official time."
Also, USATF Rule 165.16 covers the use of transponder timing systems (i.e., the chip) and Rule 165.16(h) states that "times for other competitors will be adjusted, based on the official winning time." In other words, "chip" timing cannot be used for official time(s) nor records unless the "chip" time is properly adjusted (i.e., gun time) except for LDR Masters age group records if the record setter wins his/her age group and the timing mats are properly placed before the start line and after the finish line (Rule 265.3).