Complex sentence: The Prospect Park TC, Brooklyn always had a strong showing back then, in part to support Harry Murphy, who ran it 44 times; he ran the course on his 69th birthday (1983?) in 3:52 and a few seconds.
Split into simpler sentences: The Prospect Park TC, Brooklyn always had a strong showing back then. In part to support Harry Murphy, who ran it 44 times, he ran the course on his 69th birthday (1983?) in 3:52 and a few seconds.