Instead of ending with the normal "To be continued...", this episode ends with "The end".
This is the 100th and final episode of the series.
When Jane is cutting through the marathon, the lady that gives Jane water and says "keep going" is Jennie Snyder Urman (the shows Executive Producer)
The runner that tells Rogelio that he is hilarious is Justin Baldoni's wife.
Justina Machado and Rita Moreno were recurring characters throughout the show, but this is the first episode where they appear together, even though their characters have no interaction. At that time they were the lead actresses and played daughter and mother in One Day at a Time (2017).