https://community.usms.org/swimming/f/general/6477/blocks-vs-off-the-wall-startDoes anyone have an estimate of how much time one could take off of a 50 free or *** by driving from the blocks, as opposed to a start off the wall as in practice.en-USTelligent Community 12https://community.usms.org/thread/94434?ContentTypeID=1Wed, 28 May 2008 07:05:37 GMT3187ac58-ba85-4314-b79a-c45cd885e09a:f5af95db-656c-41f3-a1fd-5780c8438fdaFormer Memberabout 1 second<div style="clear:both;"></div>https://community.usms.org/thread/94501?ContentTypeID=1Wed, 28 May 2008 03:14:21 GMT3187ac58-ba85-4314-b79a-c45cd885e09a:89fb8b9c-5310-4580-83c9-012f0646cd88andeAre you assuming the swimmer uses a: a. racing start or go start or b. a push, roll or self start, which eliminates reaction time and allows a slightly further dive the difference should be between 1 and 2 seconds diving from a block provides more distance through the air and speed upon entering the water Fastest: Roll start off blocks Slowest: Push start from a go Does anyone have an estimate of how much time one could take off of a 50 free or *** by driving from the blocks, as opposed to a start off the wall as in practice.<div style="clear:both;"></div>