The pilot reported that while on final approach he observed that his airspeed was too high, and after landing long he added power in an attempt to go around. However, the airplane did not reach flying speed before going off the end of the runway. The airplane subsequently impacted terrain and sustained substantial damage to both wings, the fuselage, and the engine compartment. The pilot stated that the wind at the time of the accident was calm. The pilot reported no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation.