Carlien was a founding member of ARPA Bushwalkers, and has gone on to inspire and assisted countless walkers with training programmes and suggestions for walks.
- Founding member of ARPA Bushwalkers
- Committee member 1984 to 1992, Convenor 1988 to 1992
- Organised 18 walking camps and helped with many more
- Led countless day walks at all levels
- Instigated (with Joan Mooney) Early Morning Walks
- Organised (with Phil Hamilton) December evening Pizza Walk
- ARPA Bushwalkers rep on Walking Federation (now Walking SA) 1999 to 2004