Flatten SF：在旧金山任意两点间找出最平坦的步行或骑行路线

找出旧金山任意两点之间最平坦的路线

AI 导读

Flatten SF 可在浏览器内基于 16 万条街道段、USGS 1 米 lidar 高程数据与 Overture/OpenStreetMap 路网，计算旧金山任意两点间从最短到最平坦的路线。滑块调节距离与爬升的取舍，爬升按累计增益计算，步行允许楼梯、骑行则排除。地点搜索离线内置，支持街道交叉口、地点与地址。

正文

Flatten SF flat routes across San Francisco

ShortestFlattest

How this works

Routes are computed in your browser over 160,000 street segments, using USGS 1 m lidar elevation and the Overture / OpenStreetMap street graph. The slider runs along the whole trade-off between distance and climbing: every route that nothing else beats on both counts, from the shortest path to the flattest one worth walking (where a foot of climb costs 200 ft of walking; beyond that the routes stop being routes). Sliding right never shortens the route and never adds climbing. Climbing is cumulative gain, not the net difference between the endpoints. Stairways are allowed on foot and excluded on a bike. Faint lines show the other routes along the way. Place search is offline: street intersections, places and addresses for San Francisco are built into this page. Source, data and the full analysis.

by Drew Edwards