If you are going ALL OUT, i.e. "race pace", how will your 200 LCM time compare to your 225 SCY time?
200 m is about 218.72 yds, so 225 yds is about 6.28 yds longer than 200 m. How much time this converts to depends on how fast you are, of course, the faster you are, the less extra time the extra 6.28 yds will take.
BUT.
A 225 SCY has 8 turns whereas 200 LCM has only 3. For example, for my backstroke, I estimate that each turn cuts about 1s off my total time, so the extra 5 turns save about 5 seconds. If you have better turns, you'll save more time.
It looks like the two factors approximately cancel for me in backstroke. I haven't done the analysis for other strokes yet. I'd be interested to see results (and/or speculation) for other swimmers.
Stroke count is important too. If you're swimming SCY and you want to simulate how many strokes you're going to take in LCM, I recommend swimming something around a 250 or 300, depending on how far you go underwater off each wall.
For the 200 LCM IM, I just swim either a 200 or 300 SCY, no messing with confusing in-between distances. For the 400 LCM IM, a 500 SCY IM is a bit longer but not a bad substitute. I don't seem to do those very often though.
Stroke count is important too. If you're swimming SCY and you want to simulate how many strokes you're going to take in LCM, I recommend swimming something around a 250 or 300, depending on how far you go underwater off each wall.
For the 200 LCM IM, I just swim either a 200 or 300 SCY, no messing with confusing in-between distances. For the 400 LCM IM, a 500 SCY IM is a bit longer but not a bad substitute. I don't seem to do those very often though.
