Who does Robin marry in the end?

Robin's Marital Journey

In the end, Robin ties the knot with Barney, despite having fleeting doubts when she considers eloping with Ted. Meanwhile, Ted eventually meets the titular character, Tracy, and they embark on their version of a happy life together (or as close as they come to it). Nevertheless, the flash-forwards reveal that ultimately, Ted and Robin find their way back to each other.

Thus, the narrative of How I Met Your Mother conveys the complicated relationships of Ted and Robin.