They are connected at the Western end. If you mean Milwaukee downtown to Waukesha downtown, that is a thirty minute drive up I-94
Waukesha to Sacramento is 2070 miles.
It is 17.9 miles according to Google Maps.
It is spread across Milwaukee, Washington and Waukesha counties.
The nearest place to sell is in Milwaukee.
The shortest driving distance is 131 miles.
Milwaukee, Wisconsin is 96.8 sq miles (250.7 km²).
121 miles taking I-43 SOUTH to I-94 WEST to Waukesha
I am not sure on weekends. But there is a Route 901 which operates on weekdays between the two.
95.5 miles
About 10 miles
1300 miles
about 1450 miles