Simplify the following text for a Grade 10 native English-speaking person.
Original: The Great Florida Birding Trail , a 2000-mile ( 3200 km ) long trail , is composed of 489 locations throughout the state which are optimal observation sites .
Simplified: The Great Florida Birding Trail , a 2000-mile ( 3200 km ) long trail , is composed of 489 locations throughout the state which are excellent observation sites .