She's The One
Who Finishes.

Built From The
Inside Out.

Theresa Seitz isn't the athlete people assume is gunning for the podium. She's the woman who shows up, does the work, and crosses every finish line she commits to — no matter what's in the way.She spent 24 years as a Cast Member at the Walt Disney Company, where she learned that execution, discipline, and consistency aren't just professional values — they're survival skills. During that same stretch, she became an endurance athlete: 50+ marathons, 3 full Ironmans, a Kilimanjaro summit, and more than a dozen 70.3s.

Then came spinal surgery. "Training" meant learning to walk again. Then came becoming a first-time mom at nearly 44. She raced again. She always does.Built to Finish is the book she needed at mile 18 of every hard race — and every hard season of life. It's not motivation. It's a system.