I started breaking in my race shoes yesterday. They are the same New Balance 860v3’s that I’ve been wearing for a while now.
I’ve put over 1,000km on a pair of shoes before, but I don’t recommend that. I’ve put about 500km on my current pair since Feburary, and I still have about 150km to run before the race, so it’s time to get a new pair into the rotation. Things start to deteriorate after 500km and you can feel the difference between a well worn pair and some fresh-out-of-the-box shoes.
I’m confident that I won’t have any shoe problems, mostly because these are the same model as the ones I’ve been running in for the last 1,000kms or so. I picked up two pairs of the v3’s when the 860v4’s came out last fall. Mostly that was so that I wouldn’t have to deal with any changes in the design or construction of the shoe that have the potential to cause blister or other issues as your foot adapts.
I’ll probably still wear the old ones a few times between now and race day. Because running shoes are still pretty much hand made, there are always some minor fit differences between pairs. It’s a good idea to make sure you’ve got a pair that are free of defects and that fit well so you’ll have one less thing to worry about heading into the last few weeks before your race.