Harbor Island

The Blowing Rocks Preserve via East Coast Greenway loop offers a captivating road cycling experience, blending the unique geology of Florida's coast with the expansive East Coast Greenway. You'll pedal past diverse ecosystems, from mangrove lagoons to tropical hammocks, with the highlight being the Anastasia limestone outcropping at Blowing Rocks Preserve itself. This moderate 44.3-mile (71.2 km) route, with only 211 feet (64 metres) of elevation gain, takes about 2 hours and 42 minutes, making it an accessible yet rewarding ride for many.

Planning your visit is straightforward, as the route primarily uses well-paved roads suitable for most road bikes. While specific parking details aren't provided, starting early is always a good idea to enjoy the cooler temperatures and lighter traffic, especially during peak seasons. The flat terrain means you won't need to worry about significant climbs, though the bridges over the Intracoastal Waterway offer slight inclines.

What truly sets this route apart is the Blowing Rocks Preserve, home to the largest Anastasia limestone outcropping on Florida's East Coast. This geological marvel creates spectacular plumes of saltwater up to 50 feet high during high tide and rough seas. The preserve is also a critical nesting site for endangered sea turtles, adding a layer of ecological significance to your ride along the scenic East Coast Greenway.