How does a canoe slalom competition narrow the field to a winner?
I · Intermediate · The competition · 3 of 7In three phases at the top level: a heat run, a semi-final run and a final run. Each is a single run that counts for itself, and nothing is carried forward. A set number of paddlers go through each time. The final result ranks the finalists by the final, then the semi-finalists, then everyone else by the heats.
How it works
- World championships: "one heat run, one (1) semi-final run and one (1) final run".
- How many go through: published each year. For 2026 at the world championships, 30 go from the heats to the semi-final and 12 to the final.
- World Cups and ranking races: a heat run and a final run, with 12 going to the final in 2026.
- Start order: the reverse of the world ranking, so the best start last. Unranked paddlers go first, in a drawn order.
- Later phases: the reverse of the results of the phase before.
- The final result: finalists are ranked by the final, those who only reached the semi-final by the semi-final, and the rest by their heat.
- No replacements: a paddler who cannot take a place in a semi-final or final is marked DNS and is not replaced.
- Small fields: with fewer than 31 entries there are no heats, and with fewer than 13 there is a direct final.
- If the event cannot be finished: the jury and chief judge may take the results of the last completed run.
The glossary has slalom racing, the Olympic slalom format and the start and start interval (slalom) entry.
Tricky cases
Is the final time added to the semi-final time?
No. Each phase stands alone. A finalist's result is the result of the final run.
A paddler wins the semi-final and then misses a gate in the final. Where do they finish?
Among the finalists, ranked by the final. With fifty seconds added that is likely to be last of them, and still ahead of everyone who did not reach the final.
A finalist is injured before the final. Does the thirteenth paddler get the place?
No. The injured athlete is marked DNS and is not replaced.
Are there always heats?
No. At the world championships and World Cups, a field of fewer than 31 goes straight to the semi-final.
Why the rule exists
Water levels and wind change through a day, so times from different sessions are not comparable. Making each phase a fresh race, on a course that may be reset, means the final is won on the final. Starting the best last builds the session towards the fastest runs.
Where it differs
| Where | What changes | Source |
|---|---|---|
| World championships (level 1) | Heat, semi-final and final | SL 5.1 |
| World Cups and ranking races (levels 2 and 3) | Heat and final | SL 5.2 |
| Olympic Games | Two heat runs, with the better one counting, then a semi-final and a final of 12 | SL 12.5 |
| Other international competitions | The organiser may use two runs with the better one counting | SL 5.3 |
From the rule book
International Canoe Federation, Canoe Slalom Competition Rules 2025, Articles 5.1 to 5.4, 9.3 and 12.5, and the 2026 Rules Appendices, Appendix 1. Checked 14 October 2026. Official document: ICF Canoe Slalom Competition Rules (PDF).