What are the freestyle rules?

Q: What are the freestyle rules?

Under World Aquatics rules (Part Two, Article 5): In a freestyle race the swimmer may swim any style. (In a medley, freestyle means any style other than backstroke, breaststroke or butterfly.) Some part of the body must touch the wall at the end of each length and at the finish. A turn without a touch is a breach. Some part of the body must break the surface throughout, except that the swimmer may be fully submerged during the turn and for up to 15 m after the start and each turn. The head must have broken the surface by the 15 m mark. The swimmer may be completely submerged once part of the head has passed the 5 m mark before the finish. Standing on the pool bottom is allowed in freestyle, but walking or stepping off the bottom, and pulling on the lane rope, are not. In 400, 800 and 1500 m freestyle, the Inspectors of Turns count laps, show odd-numbered lap cards at the turning end, and the start-end inspector signals by whistle or bell when the swimmer has two lengths plus 5 m to go, repeating it after the turn until the 5 m mark.

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Accepted Answer

Under World Aquatics rules (Part Two, Article 5):

In a freestyle race the swimmer may swim any style. (In a medley, freestyle means any style other than backstroke, breaststroke or butterfly.)
Some part of the body must touch the wall at the end of each length and at the finish. A turn without a touch is a breach.
Some part of the body must break the surface throughout, except that the swimmer may be fully submerged during the turn and for up to 15 m after the start and each turn. The head must have broken the surface by the 15 m mark.
The swimmer may be completely submerged once part of the head has passed the 5 m mark before the finish.
Standing on the pool bottom is allowed in freestyle, but walking or stepping off the bottom, and pulling on the lane rope, are not.

In 400, 800 and 1500 m freestyle, the Inspectors of Turns count laps, show odd-numbered lap cards at the turning end, and the start-end inspector signals by whistle or bell when the swimmer has two lengths plus 5 m to go, repeating it after the turn until the 5 m mark.