Mountainside Park is a public tennis establishment located at 488 Upper Mountain Ave, Upper Montclair, NJ 07043. There are 4 public tennis courts at this tennis facility. The tennis courts are not lighted. We have 14 active tennis players presently listed at Mountainside Park. You can call this tennis location at 973-509-4915. Register now at this tennis facility to play with other tennis partners. Check out the Automatic Player Matching Service - Tennis Round will connect you with other tennis players automatically based on your skill level and match history. Get points for playing and move up in the rankings.