Nationwide — forecast 2026
2 274
likely range 2142–2406
last season (2025): 2205 (+3%)
last season (2025): 2205 (+3%)
Participants = distinct swimmers (ages 10–16) who swam their district's IKM preliminary. The forecast is each district's linear trend over the post-COVID seasons (2022–) with an ~80% prediction band. Open entry — no qualifying cuts.
Participants by district — trend & forecast
Dashed line and hollow point = forecast (2026).
| District | 2022 | 2023 | 2024 | 2025 | Forecast 2026 | |
|---|---|---|---|---|---|---|
| Etelä 1 | 374 | 373 | 421 | 453 | 476 430–523 | |
| Etelä 2 | 307 | 317 | 353 | 374 | 397 374–420 | |
| Keski/itä | 249 | 266 | 285 | 296 | 314 306–322 | |
| Häme/kaakkois | 286 | 274 | 289 | 295 | 296 271–322 | |
| Pohjois | 232 | 270 | 291 | 256 | 286 206–365 | |
| Varsinais | 296 | 252 | 252 | 284 | 262 182–342 | |
| Länsi | 235 | 247 | 227 | 247 | 243 208–278 |