4k

~4k (4000m) swim sets

**UPDATED 20/05/17** These are sets we are doing ourselves so will be added to as and when we do new sessions. See also: 2.5k sets 3k sets 5k+ sets A few abbreviations explained: SR -> SECONDS REST ALT -> MEANS ALTERNATING, therefore, one length one thing, one length the other. BUILD -> get faster over […]

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