Tokyo
citywalkplan.comHow this Tokyo walk is built
Why this order. Each day sticks to one side of the city so you walk neighbourhoods instead of the metro: Day 1 circles Shibuya, Day 2 runs Harajuku and Omotesando down toward Tokyo Tower, and Day 3 is all Shinjuku. The train only bridges the gaps between clusters.
How far each day. Roughly 4 to 6 km a day on flat ground. Tokyo is big but each day's stops sit close together, so the walking itself stays gentle.
What you can skip. Tokyo Tower if time is tight, since Shibuya Sky already gives you the view. Kabukicho is skippable by day; it only earns its place after dark.
If it rains. Lean on Day 2 and 3: Omotesando's covered shops and Shinjuku's department stores keep you dry. Swap the open crossing and the garden for indoor stops.
First time vs second visit. First-timers should keep Shibuya and Shinjuku. On a repeat trip, trade them for the old lanes of Yanaka or the second-hand shops of Shimokitazawa.