Unlike general infrastructure, “sports infrastructure” has no single authoritative global index. Most well-known rankings measure sporting success or public participation rather than the facilities themselves. This list therefore weighs the things that genuinely make up a nation’s sporting backbone: the density and quality of its stadiums, arenas and training centres; its record of hosting major events and the legacy venues that record leaves behind; and sustained long-term investment. By those measures, five countries consistently stand apart. 1. United States The clear leader, on