Trelai Park is a public tennis facility located at Heol Trelai Cowbridge Rd, Ely South Glamorgan, Cardiff, United Kingdom CF5. There are 4 public tennis courts at this tennis location. The tennis courts are not lighted. You can reach this tennis facility at . Get listed today at this tennis location to participate with other tennis friends. Try our Automatic Player Matching Service - we will match you with other tennis partners automatically based on your skill level and match history. Earn points for playing and move up in the rankings.