You don't need to walk at all. Go to your map and look for the location you want to go, push A on it and it will ask you if you want to fast-travel there. Press yes and you teleport there instantly. This ruins the game though, trust me, just buy or steal a horse and ride there.
Edit: Oh, you mean Dungeons. Dungeons should never take more than 10 minutes. God knows how it took you 1 hour and a half 0_o
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