North American city rankings, actually measured
Three leaderboards built on the live CommutingCost hexmap engine. For every metro we sample its grid, run real walking, transit, and door-to-downtown routing on a GPU, and count what you can actually reach. Measured across 497,214 points of interest and 31 metro networks — not surveys, not self-reported scores.
POIs you can reach on a 15-minute network walk from a typical residential cell.
POIs reachable on a 30-minute door-to-door transit trip, with best-departure timing.
Cheapest and fastest way to the central business district, by the best mode per cell.
How these differ from Walk Score and the rest
These are cumulative-opportunity accessibility rankings: we count the real destinations you can reach within a time budget, using the actual street and transit networks. That is a different question from Walk Score (which weights nearby amenity density) or commuter surveys (which report what people say they do). Everything here is computed the same way for every metro, on the same GPU engine, against the same 497,214-POI OpenStreetMap dataset — so the comparison across cities is apples-to-apples.
Two Canadian metros (Edmonton, and Salt Lake City in the US) appear in a leaderboard without a measured-cost page yet; their ranking rows are shown but not linked.