Central Islip offers some pedestrian-friendly areas, particularly near its downtown and transit-oriented developments. Streetscapes in certain parts of the town have been designed to accommodate walking, with sidewalks and pedestrian corridors connecting key areas. However, the walkability of the region can vary depending on the specific neighborhood, as some areas may be more car-dependent due to distance or infrastructure. Weather conditions, typical of Long Island, can also influence the comfort of walking, especially during colder months or inclement weather. Overall, walking can be a practical option for short distances or within well-connected zones.

Cycling in Central Islip can be a practical option for getting around, depending on the destination and personal preferences. The area features a mix of residential and commercial zones, and distances between key locations may vary. While some streets may accommodate cyclists, dedicated bike lanes or paths are not widely noted, which could impact safety and convenience. Weather conditions, such as rain or snow, may also affect biking comfort and safety. Riders should plan routes carefully and consider local traffic patterns when deciding to use a bicycle for transportation.

Public transportation options in Central Islip include bus services provided by Suffolk County Transit, with routes like the S45 connecting to nearby areas such as Ronkonkoma. The Long Island Rail Road station in Central Islip offers additional transit options for regional travel. While buses and trains provide access to key locations, the spread-out nature of the area may require some walking to reach destinations. The infrastructure supports basic transit needs, but factors like distance between stops and limited routes could influence the convenience of relying solely on public transportation for getting around.