It is possible to escape the crowds of Wadi Bani Khalid by climbing above the wadi on the marked path. The 28km route eventually leads to Tiwi by the coast and takes 14 to 18 hours. It's a popular hike organised by tour agents in Muscat. It's hard to find the way without a guide.
Most hikers take two or three days to complete the walk (with donkeys carrying camping equipment).