San Carlos offers a mix of walkable areas, particularly in its downtown district, where sidewalks and pedestrian-friendly streets make it easy to explore shops, restaurants, and local amenities. However, the city overall is more car-oriented, with some residential and commercial areas spread out, making longer walks less practical. The mild weather in the region is generally favorable for walking, but the lack of extensive pedestrian infrastructure in certain parts may limit convenience. For shorter distances or leisure strolls, walking can be an enjoyable option, especially in well-maintained areas like Laurel Street.

Biking in San Carlos is supported by its relatively compact layout and accessible streets. The city has bike lanes and paths in certain areas, making it easier to navigate by bicycle. The terrain is generally manageable for most riders, though some areas may include mild inclines. The weather is typically favorable for biking, with conditions that are comfortable for outdoor activities. While biking can be a convenient way to get around, the availability and quality of bike infrastructure may vary depending on the specific route or destination.

Public transit in San Carlos primarily revolves around the Caltrain service, which connects the city to nearby areas like San Francisco and San Jose. Local bus routes also provide access to key destinations within and around the city. The infrastructure supports commuting to nearby hubs, but the compact size of San Carlos means some locations may be easier to reach on foot or by bike. Public transit is a practical option for those traveling to regional destinations, though its convenience for local trips depends on specific routes and schedules.