Verified athletics data with sources — top speeds, world records and all-time performance lists, checked against World Athletics and free to cite.
Every figure here is checked against World Athletics results and the all-time lists, with the source linked on each page. Free to cite — a link back is all we ask.
Usain Bolt's top speed was 44.72 km/h (27.79 mph), measured in the Berlin 2009 100m final. Full data: his peak speed, average speed, and his five fastest legal 200m performances.