These include bus routes 4, 10, 11, 15, 15A, 16, 27, 44 and 44A with Lothian Buses.Cost of exploring the Pentlands:Free!Additional information for the Pentlands:The Pentland Hills Regional Park website provides all the information you need including trail maps, advice and tips.It isn???t uncommon to see Highland Cows in the Pentlands.Walking and Biking the Water of LeithThe Water of Leith is a riv