A group of 6 girls (50 Y.O.) completed the full Great Ocean Walk in 6 days. We used RAWTravel company who were excellent. It was great to have their wonderful local driver/guide to collect us from the airport and transfer to beginning of each days walk and collect at end of each day. He was great to run us through the map and check on tides for beach sections and the weather. We were also able to adapt our walks to suit each day. Raw Travel organized a local caterer who was excellent. We stayed at 3 different accommodation places. The Boomerangs was our favourite. They were beautiful. The walk is well marked so easy to self guide. You need to train for it as some of the mountains are challenging but very do-able.
Ask Sally D about Great Ocean Walk