Gymnastics Facility Tustin. We offer a state-of-the-art, air-conditioned training facility, and a dedicated, experienced staff. Our Tustin building is 18,000 square feet and has two large adjacent parking lots along the front. The gym's full use is for recreational academy teaching. 18,000 sq ft is complete with the appropriate equipment needed for each age group of gymnasts.There are 2 vault runways with vault tables, an in-ground 40-foot tumble track, a 42-foot fiberglass rod tumbling floor, a 7 ft x 14 ft in-ground trampoline, strap bars, one sets of elite bars, crushed foam pit landings for all events, overhead spotting belts and so on.