Yes, Roosevelt Island is almost entirely paved and is designed to be one of the most accessible and pedestrian-friendly neighborhoods in New York City. The island's primary artery, Main Street, is famously paved in red brick, giving it a distinct small-town feel despite being in the middle of the East River. The perimeter of the island features a wide, flat, paved promenade that is popular for walking, cycling, and jogging, offering unobstructed views of the Manhattan and Queens skylines. Major parks like the Franklin D. Roosevelt Four Freedoms State Park at the southern tip are also fully paved with smooth, stroller- and wheelchair-friendly pathways. The only exceptions are the specialized nature trails on Theodore Roosevelt Island (which is a different island in DC) or a few unpaved wooded areas in Lighthouse Park at the northern tip. For the NYC Roosevelt Island, you can expect a smooth, urban environment that is easily navigated on foot or via the island's unique red "Cyber" shuttle buses.