From 1906 to 1926, the Finnish Swimming Federation did not arrange a dedicated national competition, but spread out the hosting duties of the championship events to multiple clubs.
Competed in Helsinki on 21 July 1912.
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Competed in Turku on 11 August 1912.
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Competed in Helsinki on 21 July 1912.
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Competed in Turku on 11 August 1912.
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Competed in Helsinki on 20 July 1912.
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Competed in Vaasa on 27 July 1912.
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Competed in Helsinki on 21 July 1912.
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Competed in Helsinki on 19 July 1912.
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Competed in Vaasa on 27 July 1912.
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Competed in Helsinki on 20 July 1912.
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Aaltonen's result broke the world record. It could not be ratified, because the track was inspected to be two centimetres too short.
Competed in Vaasa on 28 July 1912.
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Competed in Vaasa on 28 July 1912.
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Competed in Turku on 10 August 1912.
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Competed in Turku on 11 August 1912.
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Competed in Vaasa on 28 July 1912.
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Competed in Helsinki on 20 July 1912.
The championship was settled by one match, won by Helsingfors Simsällskap 6âÂÂ0 (2âÂÂ0, 4âÂÂ0).