I can appreciate how Tracksmith translated its classic aesthetic into a super shoe ... I put it to the test first during a speedy track workout, then a 5K road race, then a few other training runs at ...

Take 1km repeats, for example. ‘If you’re training for a 5K, you’re going to be running those 1km repeats at race pace or faster,’ she explains. ‘You’ll also take longer recoveries ...