Under ideal conditions, some have climbed in sneakers, jeans, and a sweatshirt, but many more have attempted the climb with inadequate gear and failed. Mt. Fuji is known for its severe elevation gains, rapidly changing weather, and steep inclines, making the climb unique compared to other high-altitude quests.

While it is technically possible to walk the trails of Mt. Fuji in sneakers, it is strongly discouraged by mountain guides and the Japanese authorities for safety reasons. The terrain on Mt. Fuji consists largely of loose volcanic gravel (scoria) and steep, jagged rocks. Standard sneakers lack the necessary ankle support to prevent sprains on the uneven descent and do not have the sole "grip" required for the slippery volcanic ash. Furthermore, the thin soles of sneakers can easily be shredded by the sharp volcanic rock. In 2026, many hikers who attempt the climb in inadequate footwear suffer from "hot spots," blisters, or foot fatigue long before reaching the summit. For a safe and high-value experience, it is a peer-to-peer essential to wear high-cut trekking boots with stiff soles. If you don't own boots, many shops in Tokyo or at the 5th Station offer high-quality rental gear, which is a much smarter investment than risking a serious injury on Japan's highest peak.