If you're looking for a meeting place or a good stop around ½ or halfway between New York and Atlantic City, you can try Toms River, NJ, which is about 1 hour south of New York, or almost an hour north of Atlantic City.
About ¼ or a fourth of the way, you can stop at Old Bridge, NJ. This is about half an hour southwest of New York.
About ⅓ or a third of the way, you can stop at Tinton Falls, NJ. This is almost an hour south of New York.
About ⅔ or two thirds of the way, you can stop at Forked River Beach, NJ. This is about 1½ hours south of New York, or almost an hour northeast of Atlantic City.
About ¾ or three fourths of the way, you can stop at Brighton at Barnegat Mobile Home Park, NJ. This is about 1½ hours south of New York, or about half an hour north of Atlantic City.
If you drive straight through without stopping at all, the total distance is 127 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 2 hours, 9 minutes.