Soren Houlberg is a former Rotarian and a Past President of the Rotary Club of Cairns Mulgrave in Queensland;
Soren was their President in 1990/91.
The club was part of Rotary District 9550, comprising Northen Queensland, Northern Territory, plus Timor-Leste.
In 2017 three clubs merged to become the Rotary Club of Cairns Trinity.
