The Short Answer: Downtown Is Walkable, Everything Else Needs a Car
If your trip is limited to historic downtown Williams, the depot, and nearby dining and lodging, you can manage entirely on foot; see the historic downtown walking guide for that stretch. Almost everything else around Williams, Bearizona, the mountain trailhead, the Deer Farm, and the surrounding lakes and campgrounds, sits outside comfortable walking range and requires a car.
Getting to Williams
Williams sits directly on I-40, about 32 miles west of Flagstaff, roughly a 30-minute drive. Most visitors arrive by car, either driving in from Flagstaff or Phoenix or picking up a rental car nearby, since Williams itself has limited car rental infrastructure of its own. If you are flying in, the nearest major airport is in Flagstaff or Phoenix, and a rental car from either is the most practical way to reach Williams.
Getting Around Downtown on Foot
Once you are in Williams, the historic district along Bill Williams Avenue is small enough to cover entirely on foot. Most downtown lodging sits within walking distance of the depot and the restaurant strip, so if your plans are limited to downtown and a Grand Canyon Railway trip, you may not need to drive again until you leave town.
What Requires a Car
Bearizona, the Bill Williams Mountain trailhead, and Grand Canyon Deer Farm are all outside easy walking range of downtown and require a car to reach. The same is true of the Kaibab National Forest campgrounds and fishing lakes covered in the camping near Williams guide. None of these are far by car, generally a short drive from downtown, but none are realistically walkable either.
Getting to the Grand Canyon from Williams
The one major exception to "you need a car" is the trip to the Grand Canyon South Rim itself, which you can make without driving by riding the Grand Canyon Railway from the historic Williams depot. Driving up AZ-64 is the other option, about a one-hour drive covering roughly 60 miles. Both approaches are covered in detail in the Grand Canyon Railway guide and the Williams to Grand Canyon day trip guide.
Parking in Williams
Street parking is generally available along and near Bill Williams Avenue downtown, and most lodging outside the immediate downtown core has its own parking. Availability and any posted restrictions can change, particularly during busy summer weekends or the Grand Canyon Railway's winter holiday season, so check current signage rather than assuming a spot will be open.
Public Transit, Ride-Hailing, and Other Options
Williams does not have a fixed-route public transit system connecting downtown to its outlying attractions. Rideshare services can be available but are less reliable in a small town than in a major city, especially outside peak tourist hours, so do not count on being able to summon a ride on short notice. For most visitors, renting a car for the trip, or leaning on the Grand Canyon Railway for the canyon leg specifically, is the more dependable plan.