The ones who last the longest in the world.

At the top of the all-time table is Ivo Steyaert (Belgium), with 124 loops: 831.5 km on the standard 6.71 km loop.

Oriol Antoli Sarrau, with 113 loops, in position 7 in the table. The best Spanish performances are often set outside Spain, so this table and the national ranking don’t count the same thing.

The organisers of Big's Backyard Ultra, the home of the format. We don’t calculate it, and we couldn’t: it counts performances set in races all over the world that are not in our archive, so deriving it would mean making it up. We transcribe it from the source, and the footer of the table says how up to date it is.

The top 100 of each season — the all-time table has 300 runners in total —. A performance is loops completed, not time: in a backyard you start every hour, on the hour, until only one runner is left standing.