The drive from Garden Grove to Ontario is a 35-mile trip. You will head north on I-15. Expect a travel time of about 45 minutes depending on traffic. It is a very straightforward drive in the heart of Southern California.
Total Distance: 56 km driving distance; 50 km straight-line air distance.
Traffic can be heavy on I-15; plan accordingly.
Any time of day, but avoid rush hour traffic.