https://community.usms.org/swimming/f/general/11133/endurance-problemsHi, I recently made some major improvements to all my strokes. Technique wise they have all improved immensely. But at there same time my ability to maintain speed for more than a 50-75 has dropped a ton. While my times haven&#39;t gotten worse, they havenen-USTelligent Community 12https://community.usms.org/thread/183007?ContentTypeID=1Sun, 27 Jan 2013 12:30:35 GMT3187ac58-ba85-4314-b79a-c45cd885e09a:167ec070-f47a-43b3-be0c-4fef2ee5f4cdKevin in MDMandos, it&#39;s hard to offer ideas when we know very little about you and your training. In training, endurance is usually not an issue of strength. Endurance is an issue of endurance. Since you seem to be fading on the back end of your swims, then the most direct answer would be lactate tolerance type sets. You can google &quot;lactate tolerance&quot; or &quot;sp2&quot; swimming sets and get some ideas. These types of sets would be something like 6 x 100 on 6:00 with active rest between each swim and the swims are very hard, very close to race effort. The idea is that the swims should burn and you need to fight through that. Others would be multiple rounds of: 5 x 50 (:10 rest) also very hard looking to hold your pace from through all the swims. The other idea is simply pacing, maybe go out in 27 and see if you can hold on better on the way back.<div style="clear:both;"></div>https://community.usms.org/thread/183018?ContentTypeID=1Sun, 27 Jan 2013 05:20:47 GMT3187ac58-ba85-4314-b79a-c45cd885e09a:867a8609-cff8-4837-baf5-4f553f31fad8orca1946The 1st lap of any race will be much faster because of the start off the blocks. Yes ,adding workouts at the gym will help with getting stronger. Keep at it!<div style="clear:both;"></div>