The fourth season of Spirit Riding Free premiered with six episodes on Netflix on March 16, 2018.
This season has picks up with Spirit recovering from the mountain lion attack, and Lucky getting herself a job. She turns thirteen and gets a visit from her grandfather. She wins the lead role in the school play, but can't handle it with Aunt Cora not at home anymore. She makes a plan to keep Aunt Cora at home in Miradero, and it works, sort of. Finally, her mother's circus comes to town, and when her father becomes engaged to her teacher, Lucky runs away to join the circus.
- "Lucky and the Impatient Patient"
- "Lucky and the Train Tycoon"
- "Lucky and the Role Reversal"
- "Lucky and the Patchwork Plan"
- "Lucky and Her New Family Part 1"
- "Lucky and Her New Family Part 2"