15 Treadmill Interval Training Workouts in 2024. 30-minute treadmill interval workout. 45-minute treadmill interval workout for intermediate runners.rkouts for beginners. HIIT treadmill workout for weight loss. Walk/Run interval training on the treadmill. Treadmill workout for runners. 10 min interval workout on the treadmill. HIIT incline workout on a treadmill.walking workout on a treadmill. Easy run treadmill workout. Negative splits workout on a treadmill. 20 min treadmill workout wide side-shuffle. 20 min treadmill walk with weights. Walking lunges workout on a treadmill. Core workout on the treadmill.