Discovering Florida - Book 4 continues a long-distance journey through the Sunshine State, exploring its history, geography, and forgotten landscapes by bicycle. This volume covers routes #76 to #100, traversing central and northern Florida through rural heartlands, abandoned rail corridors, indigenous territories, river systems, and coastal frontiers.Across nearly 1,800 miles of cumulative travel in the series, this fourth volume focuses on regions often overlooked: phosphate-mining districts, cattle country, ghost towns born of railroads and timber, Seminole reservations, inland lakes, and the quiet margins between major cities. The routes pass through Hillsborough, Highlands, Glades, Volusia, Citrus, Hernando, Duval, Nassau, and St. Johns counties, among others.The narrative moves between places such as the Withlacoochee State Trail, the Lake Wales Ridge, the Brighton Seminole Reservation, the St. Johns River, Jacksonville, Amelia Island, and Fort Clinch. Along the way, the book traces layers of Florida's past: Native American cultures, Spanish and British colonial periods, territorial expansion, railroads, segregation, military forts, Cold War installations, and modern urban growth.Rather than a practical cycling guide, this book is a historical and geographic chronicle structured through movement. Each route blends first-hand travel with documented history, explaining why towns emerged, why others vanished, and how rivers, rail lines, and natural features shaped the state over centuries.Discovering Florida - Book 4 is intended for readers interested in Florida history, regional geography, and long-form travel writing. It can be read independently, but also serves as a continuation of a broader multi-volume project documenting Florida from its coasts to its interior, one route at a time.