Swimetrica is an independent research institute for competitive swimming. It makes race results comparable across age, sex and pool type, and publishes every estimate with its uncertainty, its method and its date.
Reference
100m freestyle — adjusted time, 25m
Times are adjusted for age, sex category as recorded by the supplying federation, and pool length, then placed on one scale. The rank order is the order of the estimates; it is not the order of the swimmers. Every figure in the table below is published from cmz-query.
| Rank | Swimmer | Club | Event | Course | Best time (s) |
|---|---|---|---|---|---|
| 1 | DEL VILLAR VENTURA, Gonzalo | A.D.N. Mostoles | 100m freestyle | 25m | 51.29 |
| 2 | DIGON LLORENTE, Santiago | C.N. Mirasierra | 100m freestyle | 25m | 55.37 |
| 3 | VIDAL MARTIN, Ruben | C.N. Vallmont | 100m freestyle | 25m | 55.52 |
| 4 | MERELO GUERRA, Asier | C.D.E. Malvar | 100m freestyle | 25m | 55.79 |
| 5 | GONZALEZ LABRACA, Mateo | C.N. Mirasierra | 100m freestyle | 25m | 58.62 |
| 6 | SALVADOR CABRERA, David | C.N. Ciudad De Alcorcon | 100m freestyle | 25m | 60.08 |
| 7 | MARTINEZ CASADO, Daniel | A.D.N. Mostoles | 100m freestyle | 25m | 60.84 |
| 8 | FERNANDEZ JIMENEZ, Gonzalo | C.N. Ciudad De Alcorcon | 100m freestyle | 25m | 63.43 |
| 9 | CALLEJA RODRIGUEZ, Iago | C.D.E. Mako | 100m freestyle | 25m | 63.64 |
| 10 | PINDADO MONTAÑA, Alejandro | C.N. Leganes | 100m freestyle | 25m | 64.00 |
| 11 | ROSADO ABAD, Sergio | A.D.N. Mostoles | 100m freestyle | 25m | 64.81 |
| 12 | PAÑEDA EL AMIL, Maximiliano | C.N. Las Rozas | 100m freestyle | 25m | 65.41 |
| 13 | CABALLERO LOPEZ, Mauro | A.D.N. Mostoles | 100m freestyle | 25m | 75.42 |
How this site is organised
Rankings are recomputed continuously — adjusted times and estimates for swimmers, clubs and coaches, each dated to when it was last computed. Follow a row: Thomas Ceccon and Aniene Roma are worked reference pages showing what a ranking row expands into.
Research is dated and permanent — articles that test one training claim against the record and report the result regardless of which way it points.
Methods describe how every number on this site is computed, including where each method is known to be weak.
New to the interval? Read a single estimate, worked through — what “adjusted” means, what the interval is compatible with, and what it does not tell you.
Research
Testing training theories against the data
- 20 August 2026 · Finding
Does early specialisation predict senior performance?
A widely repeated coaching claim is that swimmers who narrow to one stroke before 14 reach higher senior peaks. Tested against 1 204 careers, the 95% interval spans −0.21 s to 0.39 s — wide enough to include both a real benefit and a real cost.
- 14 August 2026 · Finding
Does a block of altitude training precede faster 100 m sprint times?
A cohort comparison of 1 839 matched swimmer-seasons, 2019–2026. Before matching, seasons with an altitude block improved 0.21 s more than seasons without one. After matching on prior improvement rate, age, event, sex category and programme, the estimated difference is −0.03 s, 95% interval −0.11 to +0.05 — which includes zero.
- 2 June 2026 · Finding
Does an estimated club effect persist after a head-coach change?
Across 214 programmes in 19 federations, the estimated club component at 24 months after a head-coach change is between 0.31 and 0.68 of its value before the change, 95% interval, coach effect estimator v1.4.