Tokyo is surrounded by mountains that are easy to reach by train. These trails range from gentle forest walks to serious alpine routes — all within 90–120 minutes of Shinjuku.
Mt. Takao (Hachioji): The Classic Beginner Hike
Mt. Takao (599m) is Japan's most climbed mountain — accessible from Shinjuku in 50 minutes by Keio Line (¥390). Trail 1 (paved path with cable car option, ¥490 one way) takes 90 minutes round trip at easy pace. Trail 6 (forest stream route, more natural) is the better experience for hikers. The summit reveals Mt. Fuji on clear days. Tengu-yaki rice cakes and Takao soba at the summit restaurants are local institutions. Best on weekdays — weekends from March–November are extremely crowded.
Mt. Mitake (Okutama): Forest Spirituality
Mt. Mitake (929m) has a summit village with a 1,200-year-old mountaintop shrine, traditional pilgrim lodgings (yamabuki, from ¥12,000 including dinner), and trails through ancient cedar forest. The cable car (¥600 one way, 6 min) reaches near the summit; the Rock Garden trail (2 hours round trip from the summit shrine) is one of Tokyo-area's finest forest walks. 80 minutes from Shinjuku by JR Chuo Line (¥1,000).
Mt. Tanzawa (Kanagawa): Serious Hiking
The Tanzawa range (highest peak: Tanbazawa, 1,567m) is the closest serious alpine hiking to Tokyo. Multiple trailheads accessible from Odakyu Line stations (1.5–2 hours from Shinjuku). The Tozan-guchi to Yakushi-daira to Tanzawa-sancho route takes 5–6 hours round trip. Genuine mountain hiking: steep, rocky sections, potential for afternoon thunderstorms in summer. Proper boots required. The autumn foliage (mid-November) is exceptional.
Mt. Nokogiri (Chiba): Dramatic Cliffs and Buddhist Statues
Mt. Nokogiri (329m) on the Boso Peninsula has the most dramatic scenery per effort ratio near Tokyo — jagged cliffs (the "hell peek" overhang over the Tokyo Bay), 1,500 Buddhist rock carvings, and a 31-meter Buddha statue carved into the cliff. Ferry from Kurihama to Kanaya (35 min, ¥780) plus 20-minute walk to the cable car or hiking trail. 90 minutes total from Tokyo.
Okutama: Mountain Village
The Tama River valley in western Tokyo winds through a genuine mountain landscape — limestone gorges, cedar forest, and a river that narrows to rapids. Okutama Town (JR Ome Line, 90 min from Shinjuku) is the base for multiple trails including the Ogouchi Reservoir circuit (3 hours) and the Syosenkyo gorge walk. Small izakaya and trout-fishing restaurants in the village serve local mountain cuisine (iwana river fish, sansai mountain vegetables).
What to Bring
For Takao or Nokogiri: comfortable walking shoes, water, and snacks. For Tanzawa or Mitake: proper hiking boots, full water supply (2L+), rain jacket, emergency whistle, and downloaded offline maps (Yamap is the best Japanese hiking app with detailed trail data). Japanese convenience stores near trailheads stock most hiking supplies if you forget something.