That would pretty much be downtown. If you're looking for good restaraunts, there's no shortage of candidates downtown!
Your Long Beach driver will have a little bit longer to go than your South Pas driver but exactly equidistant would be south of the Colleseum, and that's probably not where you want to be looking for food.
If you're looking for an interesting date location, consider the Grand Central Market -- shop for produce at the same place the restaraunts do, have some tapas or other hand food, and marvel at the old architecture of the eastern side of downtown. The Bradbury Building is only a block away and it's worth checking out the interior. Plenty of opportunities to interact in an unusual and interesting environment.
Halfway between Pasadena, MD, and York, PA, is approximately near the area of Westminster, MD. This location is about equidistant from both cities and offers convenient access via major highways. It's a good meeting point with various amenities and parks in the vicinity.
Rochester, CA is a halfway point between LA and Victorville.
Hinton, OK
The city that is the halfway point between Downey, California and San Francisco, California is Acebedo, California. It is the exact geographical halfway point.
Pasadena, Texas is halfway between Austin & Baton Rouge
Acebedo, CA is the halfway point.
Independence, California is about the halfway point.
The halfway point between West Grove, PA, and Hanover, MD, is near the area of Glen Burnie, MD. This location is approximately equidistant from both starting points, making it a convenient meeting spot. Depending on your exact route, you might also consider areas around Pasadena, MD, as potential halfway points.
Kettleman Station, California
Gallup, New Mexico is about halfway.
The halfway point between Sydney, Australia and Los Angeles, California is London, Kiribati. The closest major city that is roughly halfway is Honolulu, Hawaii.
Las Cruces, NM