The drive from Garden Grove to Fontana is a 45-mile trip. You will head north on I-15. Expect a travel time of about 55 minutes depending on traffic. It is a very straightforward drive in the heart of Southern California.
Total Distance: 72 km driving distance; 60 km straight-line air distance.
Traffic can be heavy on I-15; plan accordingly.
Any time of day, but avoid rush hour traffic.