Okutama Forest Road – Kazahari-Touge to Tabayama

Less than two hours west of central Tokyo, the Okutama area holds a surprisingly raw network of Tokyo Metropolitan forest roads that most city dwellers have no idea exist. The route from Kazahari-Touge pass down toward Tabayama Village in Yamanashi follows narrow single-lane forest tracks managed by the Tokyo Metropolitan Government’s forestry division — a bureaucratic quirk that means these roads see almost no recreational traffic despite being geographically close to one of the world’s largest cities. The track runs along sharp ridgelines with cliff-edge drop-offs, through cedar and cypress plantations that go dark and cathedral-quiet mid-route. The surface alternates between packed gravel and loose dirt with embedded rock, and the switchbacks on the Tabayama descent are tight enough that longer wheelbase vehicles need to execute multi-point turns.

This is a genuine technical route — not extreme, but not forgiving either. Minimum spec is a short-wheelbase high-clearance 4WD; a Jimny or FJ Cruiser is ideal. Longer rigs should reconsider. The road is seasonally closed November through April due to ice and snow. No permits required, but the Tokyo Metropolitan forest road gates can close without much notice — check with the Okutama Town office before running it. Fuel in Okutama town; nothing past that point. Cell service fades completely on the ridge. What you get is a genuine mountain run in the hills that feed Tokyo’s water supply, with zero other overlanders and a cold Tama River at the end of it.