Complex sentence: Hiking on this side of the park is readily accessible to visitors, there are trail heads present at the east end of Speedway and Broadway, these trail heads are commonly used by horses and get heavy usage on the weekends.
Split into simpler sentences: Hiking on this side of the park is readily accessible to visitors. There are trail heads present at the east end of Speedway and Broadway, but these trail heads are commonly used by horses and get heavy usage on the weekends.