If you're looking for a meeting place or a good stop around ½ or halfway between Pompano Beach and Miami Beach, you can try North Miami Beach, FL, which is about half an hour south of Pompano Beach, or about half an hour north of Miami Beach.
About ¼ or a fourth of the way, you can stop at Fort Lauderdale, FL. This is about 10 minutes south of Pompano Beach.
About ⅓ or a third of the way, you can stop at Hollywood, FL. This is about 18 minutes south of Pompano Beach.
About ⅔ or two thirds of the way, you can stop at North Miami, FL. This is about half an hour south of Pompano Beach, or about 18 minutes northwest of Miami Beach.
If you drive straight through without stopping at all, the total distance is 39 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 48 minutes.