Sannois offers a pleasant environment for walking, with a mix of urban and suburban settings. The town features pedestrian-friendly streets and pathways, making it relatively easy to navigate on foot. Many local amenities, such as shops, cafes, and parks, are within a reasonable walking distance, contributing to its accessibility. The terrain is generally manageable, though some areas may have slight inclines. Walking can be a practical option for short distances, but factors like weather conditions and the spread of destinations might influence its convenience for longer journeys.

Cycling in Sannois can be a practical way to explore the area, as the town offers a mix of urban and natural settings. Some routes may be accessible for cyclists, and there are likely bike parking options near key transit points, making it easier to combine cycling with other transportation modes. However, the suitability of biking depends on the specific routes and distances involved, as well as the terrain, which may include some inclines.

Public transit offers convenient options for getting around Sannois and connecting to nearby destinations. The town is served by regional train services, providing access to other parts of Île-de-France. Local buses also operate within the area, making it possible to reach various neighborhoods and nearby towns. The infrastructure supports smooth transit, and the compact size of Sannois makes public transportation a practical choice for many trips.