Oshkosh Transit System
The local bus operates 11 routes out of the Transit Center. Each route has two departures per hour. The web site has a route map.
Oshkosh City Cab Co.
+1-920 235-7000
Yellow Cab Co.
+1-920 235-1950
EAA Shuttle
During AirVenture there is a special shuttle that runs twice per hour from the Transit Center at 110 Pearl Ave, to the University of Wisconsin Oshkosh on Osceola Street opposite Gruenhagen Hall, to the bus drop area near the AirVenture main gate, to the Wittman Regional Airport terminal building, looping back to the Transit Center. The unlimited pass also lets you ride for free on any OTS route during AirVenture. If you are staying at UWosh housing for AirVenture, you can buy the bus pass when you check in.
Airventure
The AirVenture grounds stretch for kilometers, literally. You will walk a lot. There are helpful trams that run north and south parallel to the flight line, and stop near many of the main attractions. The AirVenture map lists the routes. Cars aren't allowed on the AirVenture grounds, except by certain staff.
If you can bring a bicycle, it will make travelling around much easier. There is a bike corral about 200m from Theatre in the Woods in the direction of Camp Scholler. However, there aren't other bike corrals. This means that you may not be able to lock your bicycle in other places; you'll need to keep it with you as you explore.
For people who have a hard time walking, electric carts are available for rent from near the main gate.