528 miles.
This depends on which Eugene you mean, try Google Maps for a driving distance.
It is 530 miles according to Google Maps.
The driving distance from Ontario to San Francisco, California is 2,810 miles / 4522 km
527 miles
The air distance from San Francisco, California, to Eugene, Oregon, is 435 miles. That equals 700 kilometers or 378 nautical miles.
The driving distance from San Francisco, CA, USA to Cambria, CA, USA is 231mi / 372km
The driving distance from San Francisco, CA, USA to Nipomo, CA, USA is 256mi / 412km
The driving distance from San Francisco, CA, USA to Pomona, CA, USA is 408mi / 657km
The driving distance from San Francisco, CA, USA to Brattleboro, VT, USA is 3007.76mi / 4840.53km
The driving distance is about 3,920km
The driving distance is about 1,800 miles.
The driving distance is about 120 miles.