The Spiderman mountain climber is a dynamic, bodyweight core exercise performed from a high plank position, driving one knee out toward the elbow on the same side rather than straight forward as in a standard mountain climber. The lateral knee path adds a rotational demand that recruits the obliques more heavily while the plank position keeps the shoulders, chest, and hip flexors under continuous tension. Performed at speed, it doubles as a conditioning drill; performed slowly, it emphasizes strict core control.
Muscles Targeted
- Primary: Rectus abdominis, obliques
- Secondary: Hip flexors, shoulders, chest (isometric support)
- Tertiary: Quadriceps, glutes, forearms and wrists
Starting Position
Set up in a high plank with your hands directly under your shoulders, arms straight, and your body forming a straight line from head to heels. Position your feet hip-width apart and engage your core so your hips stay level - neither sagging nor piked. This is your reset position between each rep.
Execution Steps
- Engage your core and shift your weight slightly to stabilize on the opposite hand and foot
- Lift one foot off the ground and drive that knee outward and forward toward the elbow on the same side
- Bring the knee as close to the elbow as your mobility allows, rotating slightly through the torso as needed
- Return the leg to the plank position under control rather than dropping it back
- Repeat immediately on the other side, alternating knee-to-elbow drives
- Maintain a flat back and level hips throughout, avoiding any bounce or sag between reps
- Continue alternating for the target number of reps or a set time interval
Form Cues
- Keep hips level: Don't let your hips sag toward the floor or pike up as you drive the knee forward
- Stack hands under shoulders: This keeps the shoulder joint stable and reduces strain through the wrists
- Drive the knee outward, not straight in: The lateral path to the elbow is what distinguishes this from a standard mountain climber and engages the obliques
- Brace the core throughout: Treat the plank position as continuous, not something you relax between reps
- Match pace to goal: Slow the tempo for strict core control, or speed up for a cardio conditioning effect
Common Mistakes
- Letting the hips sag: A dropped lower back shifts load onto the spine and reduces core engagement. Keep a straight line from shoulders to heels throughout the set.
- Hips riding too high: Piking the hips up reduces the demand on the shoulders and core. Keep the body in a flat plank position.
- Losing the rotational path: Driving the knee straight forward instead of out to the elbow turns this into a regular mountain climber and misses the oblique emphasis. Aim the knee toward the same-side elbow.
- Rushing with poor form: Moving too fast before you can control the movement leads to bouncing hips and shortened range of motion. Master a slow, controlled tempo first.
- Placing hands too far forward: This adds unnecessary shoulder strain. Keep hands stacked directly under the shoulders throughout.
Variations
- Standard mountain climber: Drives the knee straight toward the chest instead of out to the elbow, removing the rotational component
- Slow Spiderman climber: A deliberate, paused tempo version that emphasizes strict core control over speed
- Cross-body mountain climber: A similar lateral-drive variation with a slightly different knee path for varied oblique emphasis
- Spiderman push-up: Combines a knee-to-elbow drive with a push-up for added upper-body strength demand
- improved Spiderman climber: Hands placed on a bench or box to reduce the angle and difficulty for beginners
Tips for Progression
- Increase the total duration or rep count once form stays consistent for the full set
- Increase speed gradually to shift the exercise toward a cardio conditioning tool
- Slow the tempo and add a brief pause at the top of the knee drive to increase core time under tension
- Progress to the Spiderman push-up once the base movement is controlled and stable
Training Notes
Use Spiderman mountain climbers 2-4 times per week as a core finisher or as part of a HIIT circuit, typically for 20-40 second intervals or 12-15 reps per side, with minimal rest between rounds for a conditioning effect. For a strength-focused approach, perform 2-3 sets of 10-12 slower, controlled reps per side with 45-60 seconds of rest.