These Estonian triplets are about to make history at the Rio Olympics

Leila, Liina, and Lily Luik are not expected to medal when they compete at the 2016 Olympics in Rio.

But the three Estonian marathon runners will make history, as the first set of triplets to compete together.

The triplets, now 30, will race in their first Olympics this summer, despite only seriously training for marathon running since they were 24 years old.

Reuters recently followed the triplets as they trained for the biggest race of their lives.