The 1650 is 66 lengths of a 25 yard pool. Olympic swimmers finish under 15 minutes. You swim against yourself, seeded in a heat with comparable swimmers. There is a counter at the end of the pool who drops big plastic numbers into the water as you approach your wall, starting at 01, ending at 63. For 65 you get two red boxes that mean, “haul ass you are almost done”.
My husband or son counts for me (holds the number board). My counter knows what split I need to be on pace. So to swim a 1:42 I needed to hit 51 seconds for each 50. If I am falling off pace they shake the board so I know I need to pick it up. If I see a still set of numbers then I know I am okay. The USMS has a pace chart that is very helpful in figuring this out.
When I see 21 on the number board, leg one done. Yay.
When I see 41 on the board, two legs done. Double yay!
When I see 59 on the board, it’s almost over. Triple Yay!
HARD! (63 on the board).
Two red squares! Suffer!
I’m in HELLLLLLLL and then done. Whew.