There is a lot more tennis fun beyond the borders of our lovely Wageningen. Throughout the years, Walhalla is in close contact with some Students tennis associations in the country. The official sister associations are:
- E.S.T. Fellenoord, Eindhoven
- N.S.L.T.C. Slow, Nijmegen
- T.S.T.V. Lacoste, Tilburg
Next to these associations there are student tennis associations in any student city in the Netherlands. These include:
- Chip & charge, Amsterdam
- Tenista, Amsterdam
- Studenten Tennis Breda (STB), Breda
- Obvius, Delft
- Ludica, Enschede
- G.S.T.C., Groningen
- TAM, Groningen
- Veracket, Groningen
- Qravel, Leiden
- Stennis, Maastricht
- Passing Shot, Rotterdam
- De Uithof, Utrecht