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Road type Cost [%] Cost MP
Cobblestone road 50% 50
Gravel road 65% 65
Dirt road 75% 75

Road ignores all terrain penalties and enables hero to move further on the Adventure Map. There are three different types of roads: dirt, gravel and cobblestone. In manual it states, that movement on dirt road costs 75%, on gravel road 65% and on cobblestone road 50% compared to "normal" moving. The normal in this context means a terrain without terrain penalty.