In reply to londonbear:
Start at okehampton, go up thorough the army camp, then rowtor, west mill tor, yes tor, high willhayes, dinger tor, lints tor, sandy ford, kitty tor, great links tor, hare tor, head ESE to tavy cleave, follow the river for a bit then up to fur tor and cut hill, then down the North West passage to Sandy hole pass. Head back by sittaford tor, Whitehorse hill, hangingstone hill, wild tor, and cosdon beacon before heading down to belstone, then take the Footpath that crosses the east okement river and follows the valley back down to okehampton.
Plenty of wild camping spots, some of the ground is pretty rough and remote, particularly between tavy cleave and sandy hole pass.