The numbers

The 5×5 blindfolded, in numbers

Everything countable about the 5×5 blindfolded: the mathematics of the puzzle with its sources, and the live state of the sport, rebuilt nightly.

The puzzle is the 5×5 (about 2.8 × 10⁷⁴ positions Jaap's Puzzle Page), solved blindfolded after sighted memorisation.
The world record single is 1:58.59 by Stanley Chapel, standing 247 days.
The world record average is 2:27.63 by Stanley Chapel, standing 2,457 days.
8,251 completed solves are on the official record in 5×5 blindfolded, from 2,793 competitions in 70 countries.
1,134 people hold an official ranking. The median personal best among all of them is 17:26.00.
1 people have ever gone under 2:00.00 seconds.
The world record has moved 46 times since records began in 2004.
70 countries hold a national record, and the spread is wide: the fastest is 1:58.59, the most beatable 28:33.00.
60% of all official attempts in this event end in a DNF, against about 2% in regular 3×3. This is the sport's own measure of how hard blindfolded solving is.
Results begin in 2003; every figure on this page recomputes nightly from the official export.