The following describes the routine I put together to supplement my run and bike:
Stability Ball Single Leg Bridges
Band Resisted Clams
Dumbbell Walking Lunges
Dumbbell Heel Raises
Dumbbell Single Leg Deadlift to Hip Hike
Band Resisted Monster Walks
I do at least 3-4 sets per exercise, 10-15 reps, and I perform this series at least 1x per week; I try to get 2x whenever possible.