Do you know your time for 100 yards? Not your time for a single all-out time trial, but the time you would record at a relatively relaxed pace. A pace you could repeat three to five times, resting less than a minute between trials. I would guess that a minority of those reading this post would answer in the affirmative.

My guesstimate is based on surveys we conduct of participants in our Open Water workshops or camps. Typically, about 75 percent report that they’ve participated in a triathlon or open water swim. But fewer than 50 percent know their time for 100 yards or meters.

To me this is putting the cart before the horse: The most reliable baseline for being able to improve performance through more effective (and personally relevant) training is to know your time for 100 yards or meters. And even if you have no plans to swim in an organized event, this information can be invaluable to personal improvement and mastery aspirations.

The Power of Two Metrics

Now that I’ve made the case for you to begin recording your time for short sets (three to five repeats) of 100 yards, I’ll urge you to track a second metric at the same time—stroke count or SPL; Tempo or stroke rate; and/or RPE, Rate of Perceived Effort. Just as you must know both length and width to calculate the area of a square, knowing time plus a second metric (i) gives you invaluable insight into how you ‘constructed’ that time; and (ii) helps develop critical skills for steady pacing.

100 Metres: Three Ways

Here are the three ways in which I combine 100-yard time with a second metric to gain more complete information about the quality and repeatability of my swims. Each requires you to swim only a short set of 3 x 100 to gain invaluable insight into how efficiently you create more speed.

Time + Tempo: This requires a Tempo Trainer, which I would urge you to make standard training equipment, if it’s not already. Time yourself at a range of tempos within your Tempo Comfort Range (your stroke doesn’t feel rushed.) For this article, I’ll use a starting tempo of 1.25 seconds/stroke (mode 1 on the Tempo Trainer). Use a different tempo if you feel more comfortable.TT-Pro

  • Swim 3 x 100 at 1.25 tempo. Your goal is to record the same time on each repeat. Doing so means you have kept both Stroke Length and Stroke Rate consistent. This is the first skill of effective pacing.
  • Next, swim 3 x 100 at 1.25, 1.22, 1.19 tempo (tempo increases by .03 sec. each repeat.) Your goal is to swim faster on each repeat. This means you have effectively converted greater stroke rate into more speed.
  • If you succeed at that, try the same set at tempos of 1.25, 1.23, 1.21. A smaller increase (.02 sec) in tempo requires more skill to swim faster. If you do not succeed at the second set, repeat it at tempos of 1.25, 1.21, 1.17. A larger increase in tempo requires less skill to swim faster.

Continue experimenting with short sets like these until you find the smallest increase in tempo at which you can descend a set of 3 x 100.

 

Time + SPL: This requires you to keep track of your stroke count for 100 yards. If you find that difficult, substitute sets of 3 x 50 yards.

For this article, I’ll use a 100-yard total stroke count of 65 as a starting point. You should choose a stroke count that is (a) within your Green Zone and (b) at which you feel highly comfortable.

Find your efficient stroke count range of 25y pools.

Find your efficient stroke count range of 25y pools.

  • Swim 3 x 100 at 65 strokes. Your goal is to swim the same time on all three. Doing so means you have mastered the first skill of effective pacing—keeping both Stroke Length and Stroke Rate consistent.
  • If you succeed at that, swim 3 x 100 at 65-64-63 strokes (reduce SPL by slightly lengthening your stroke. Your goal is to swim the same time on all three repeats.
  • If you do not succeed at the first set, try 3 x 100 at 65-66-67 strokes with a goal of repeating the same time on each.

Çontinue experimenting until you can subtract two or more strokes per 100 during the set and maintain the same repeat time.

 

Time + RPE:  RPE is an acronym for Rate of Perceived Effort–a fairly accurate self-assessment of how hard we’re working. This measure becomes far more accurate with regular practice. In Total Immersion, we employ a 5-point RPE scale.

TI-RPE-Scale

TI-RPE-Scale

  • Swim 3 x 100 at RPE-1, the easiest, most relaxed pace of which you’re capable, with the most impeccable technique. How different is that pace from your normal 100-yard pace? Repeat several times (over a week or two), trying to reduce the difference between your RPE-1 pace and normal. (Hint: Strategies you employed in the Time+Tempo and Time+SPL sets should work here too.)
  • Then swim 3 x 100 at RPE-1, RPE-2, and RPE-3. How much faster do you swim by increasing your RPE? Experiment with this set several times over a week or two to see if you can gain more speed with less increase in effort.

May your laps be as happy—and purposeful—as mine.