About ¼ or a fourth of the way, you can stop at Dolores, CA. This is about 6 minutes northwest of Long Beach.
About ⅓ or a third of the way, you can stop at Vista del Mar, CA. This is about 9 minutes north of Long Beach.
About ⅔ or two thirds of the way, you can stop at Gardena, CA. This is about 17 minutes northwest of Long Beach, or about 9 minutes south of Westmont.
About ¾ or three fourths of the way, you can stop at Willowbrook, CA. This is about half an hour north of Long Beach, or about 6 minutes southeast of Westmont.
If you drive straight through without stopping at all, the total distance is 17 miles. The distances shown above don't include local roads to get into each town, so if you're planning a long road trip, make sure you factor in traffic and road conditions, rest stop breaks, and interesting detours along the way. If you're in a rush, you can do the trip with zero stops, and your total travel time would be around 26 minutes.