Walking in Fullerton, California, can be a practical way to explore certain areas, particularly in its downtown district, where shops, restaurants, and cultural attractions are clustered within a pedestrian-friendly layout. The city features sidewalks and crosswalks that support safe walking, though some areas may require navigating busier streets. The generally mild Southern California weather makes walking pleasant for much of the year, but distances between neighborhoods or destinations outside the central areas may be less convenient for pedestrians. Overall, walking is a reasonable option for shorter trips or exploring specific parts of the city.

Biking is another practical way to get around Fullerton, as the city offers some bike-friendly infrastructure, including designated bike boulevards like the Wilshire Bike Boulevard. Many local destinations, particularly in and around downtown, are accessible by bike. The relatively flat terrain in much of the city makes cycling manageable, though riders should be mindful of traffic and road conditions. Fullerton also features recreational biking opportunities, such as the Fullerton Loop. These elements make biking a reasonable option for short to moderate distances within the city.

Public transportation in Fullerton provides several options for navigating the city and surrounding areas without relying on a car. The city is served by buses and trains, including connections through a central transportation hub. The train station provides access to regional rail services, which can be convenient for longer commutes. Local bus routes connect various parts of the city, though travel times may vary depending on traffic. Public transit is a practical choice for those traveling to well-connected areas, but the ease of use may depend on the proximity of destinations to transit stops.