Holding a dumbbell in each hand, you step forward into a lunge and keep walking forward rep after rep instead of returning to a static start. The continuous stepping adds a balance and coordination demand on top of the usual lunge burn in the quads and glutes.
Walking lunges work best as higher-rep, moderate-load work, 10 to 16 steps per leg for 2 to 4 sets, since balancing and traveling under load limits how heavy you can safely go compared to a stationary squat pattern. Progress by adding steps first, then dumbbell weight, once every rep keeps the same depth and torso angle from the first step to the last. Program them after your primary squat or hinge movement on leg day, since the coordination demand is harder to manage once your legs are already fatigued in a bad way. They also double well as light conditioning on an easier training day, since the constant motion keeps the heart rate elevated without heavy axial loading.
How long should my stride be? Long enough that your front knee stays roughly over your ankle at the bottom, not so long that your back knee slams the floor or your torso pitches forward.
Why do my knees hurt during the movement? Usually the front knee is caving inward or traveling far past the toes on a too-short stride; lengthen the step and keep the knee tracking over the middle toes.
Should I hold the dumbbells at my sides or on my shoulders? At your sides is easier to balance and better for most lifters; a front rack or overhead hold adds a core and shoulder demand once the leg work itself feels manageable.
Log your dumbbell walking lunges sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.