There are hundreds of visually impaired athletes around the world who aren’t able to see the finish line yet can complete a race quicker than most of us can tie our shoelaces. Some run far, rather than fast. Some even try swimming or cycling. That they’re able to do so is thanks to a largely undocumented partnership that deserves a bit more love and attention. We delve into the hidden world of para sport guides to discover the nuances and challenges involved in building a strong relationship both on and off the track.