Split squat vs lunge: which one should you do?

Split squat vs lunge is one of those gym arguments where both sides are right and nobody's listening. They're the same basic position: one foot forward, one foot back, both knees bent. The difference is that in a split squat your feet never move, and in a lunge you step into the position and out of it on every rep.

That one change decides how much weight you can use, how much balance you need, how your knees feel, and what the exercise carries over to. Here's the difference between split squat and lunge, which one to use when, and how they fit a running week, whether you plan it yourself or use a lifting app that knows you also run.

The difference between split squat and lunge

The split squat is the strength version. The lunge is the athletic version. Most runners benefit from both, which is why both show up in a strength plan for runners.

Both belong to the same family, along with the bulgarian split squat, which raises the back foot on a bench to make the front leg do even more. If you want the technique of either lift in detail, split squat form has the step-by-step for the static version.

Lunge vs split squat: what changes when you step

Load

With your feet fixed, the only job is going down and up. That's why the split squat lets you use more weight for the same effort, and why it's easier to progress week to week. In a lunge, some of your effort goes to stepping, stopping and balancing, so the load drops.

Balance and deceleration

The step is what the lunge does that the split squat can't. Every forward or walking lunge ends in a landing: the front leg has to absorb your body moving forward and stop it. That's a skill, and it's much closer to what running and change-of-direction sports ask for.

Muscles

Both train the quads, glutes, hamstrings and adductors of the front leg, with the trunk and hip stabilizers keeping you level. Stance length and torso angle matter more than the exercise name. A study of split squat step lengths found longer steps increased hip extensor activation with limited effect on the knee extensors. A biomechanical analysis of the forward lunge found the hip extensors did the most work, even though the knee moved through the most range.

In other words: if you want glutes, take a longer stance in either lift. If you want quads, shorten it and stay upright.

Split squat vs reverse lunge

This is the comparison that matters most, because the reverse lunge is the version most people should do.

In a reverse lunge, the front foot stays planted and the back foot steps away and returns. That makes it the most stable lunge, close to a split squat in feel, but with the step-and-return still in it.

Knee loading is where the reverse lunge beats its forward sibling. A study comparing forward and backward lunges in 20 women found higher quadriceps force and patellofemoral (kneecap) joint loading in the forward lunge. If forward lunges bother your knees, the reverse lunge or split squat is the obvious swap. If something actually hurts, see a professional.

Reverse lunge vs split squat in one sentence: the split squat is for loading, the reverse lunge is for loading plus a little control and balance. You won't go wrong with either.

Which one should you do?

Pick the split squat if

• ›You're new to single-leg training.
• ›You want to build strength and load the lift heavy.
• ›Balance is limiting how hard you can push the leg.
• ›You train at home with limited space.

Pick the lunge if

• ›You already split squat comfortably and want a new challenge.
• ›You want balance, coordination and deceleration in the same exercise.
• ›You're training for Hyrox, which has a lunge station.
• ›You want a lower-body exercise with a conditioning element.

Or do both

A sensible pattern: heavy split squats early in the week for strength, lighter reverse or walking lunges later for control and conditioning. The split squat builds the engine, the lunge teaches you to use it on the move.

Split squat vs lunge for runners

Runners land on one leg and push off it, thousands of times per run. Both exercises train single-leg strength, but they do it differently.

• ›Split squats are the better strength builder. They let you go heavy, and a 2024 meta-analysis on runners found high-load strength training improved running economy, while submaximal loads did not show the same benefit.
• ›Lunges add the landing. Reverse and walking lunges are a gentle way to train deceleration without jumping.

For most runners, the split squat (or Bulgarian) is the main single-leg lift, and lunges are a secondary or warm-up exercise. Schedule both on easy days, away from the day before intervals or the long run, and introduce them in a base phase rather than two weeks before a race. Lunges in particular leave you sore the first few times.

The bigger question of bilateral versus single-leg work is covered in our guide to lunges vs squats. Short answer: you want both. A goblet squat with dumbbell and a split squat on the same day cover a lot of ground for a beginner.

Split squat vs lunge for Hyrox

The Hyrox race includes 100 m of sandbag lunges, according to hyrox.com's race overview, so lunges are the specific training. Split squats build the leg strength underneath. Early in a block, prioritize heavy split squats; closer to race day, add walking lunges at race weight, especially after running. Good walking lunges form under fatigue is mostly about staying tall and keeping a steady rhythm.

What about the Bulgarian split squat and step-ups?

These come up in the same conversation.

• ›The one-line version of a guide to split squat vs bulgarian split squat: raising the back foot adds range and shifts more load to the front leg, so the Bulgarian is harder at the same weight.
• ›The one-line version of a guide to step ups vs bulgarian split squats: step-ups are simpler and easier to recover from, the Bulgarian loads more range and is easier to push heavy.

Bilateral squats still have their place alongside all of this, and goblet squats for runners are the easiest bilateral starting point.

How to program them

Coaching conventions, not commandments. Reps are per leg.

Progress the split squat with load. Progress lunges with load first, then distance or reps if you're training for an event that needs it.

How exrsz handles it

exrsz builds a periodized plan from your goal, schedule, level and equipment. Training for a race, you'll get heavy split squats for strength; training for Hyrox, walking lunges get added as the race gets closer. It balances single-leg work against your runs in one plan, adapts loads each week to what you actually lifted, and reshuffles missed sessions.

FAQ

What is the difference between split squat and lunge?

In a split squat your feet stay planted for the whole set; in a lunge you step into and out of the position every rep. The split squat is more stable and easier to load, the lunge adds balance and deceleration.

Is a split squat or reverse lunge better?

Neither is better overall. The split squat lets you load heavier; the reverse lunge adds a step and a bit more balance. Both are knee-friendly options for most people.

Is a lunge vs split squat better for glutes?

Neither by default. Stance length and torso angle matter more, and a study of split squat step lengths found longer steps increased hip extensor activation.

Are reverse lunges easier on the knees than forward lunges?

For most people, yes. A study of forward and backward lunges found lower quadriceps force and kneecap joint loading in the backward lunge.

Should runners do split squats or lunges?

Both, with split squats as the main strength lift and lunges as a secondary exercise. Keep both on easy days and away from the day before hard runs.