Complex sentence: From 1958 until 1962 the ballroom served as a roller skating rink; first as Skater's Ballroom and then Santa Monica Roller Rink, where the speed skating club won many state and regional championships.
Split into simpler sentences: From 1958 until 1962 it served as a roller skating rink, first as Skater's Ballroom and then Santa Monica Roller Rink. The speed skating club won many state and regional championships.