The Modern Family star, 18, stepped out in workout-ready attire, complete with sports bra and Nike shoes detailed with neon green, just days after she and boyfriend Laurent Gaudette went exploring during a Wednesday hike.
"Found a secret trail on our hike today," Winter captioned the artistic photo of herself, shot by Gaudette.
VIDEO: Modern Family Star Jesse Tyler Ferguson Shares the Last Time He Felt Sexy
She and Gaudette started dating in late 2013, even overcoming a short split in 2015.
"We love each other, so we are obviously meant to be together," Winter told reporters in February.
One thing that had been bolstering their relationship? Time, she said.
"When I first came to this school and met him, I immediately thought there was something special about him," Winter said. "I got to know him and, almost three years later, we're here."