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Exercises

Triathlon strength training: what to lift, and how it changes through the season

Published October 24, 2026

Triathlon strength training works best as two sessions a week in the off-season, two heavier and shorter sessions in pre-season, and one maintenance session during racing. The best exercises are the back squat and Bulgarian split squat for the legs, the Romanian deadlift and single-leg hip thrust for the hamstrings and glutes, the lat pulldown and seated cable row for the swim and bike posture, single-leg calf raises for the run, and side planks, dead bugs and suitcase carries for the trunk. Keep sets 2 to 3 reps short of failure and lift after easy sessions so your key swim, bike and run workouts stay fresh.

  1. Barbell Back Squat Quads, Glutes, Adductors
  2. Bulgarian Split Squat Quads, Glutes
  3. Romanian Deadlift Hamstrings, Glutes
  4. Single-Leg Calf Raise Calves
  5. Lat Pulldown Lats
  6. Seated Cable Row Upper Back, Lats
  7. Side Plank Abs
  8. Dead Bug Abs

Leg strength for the bike and run

A heavy squat for general strength, a split squat for each leg on its own, and calf raises for the running load. These are the exercises most likely to make race-day legs feel better.

Main leg strength for the bike and run

Barbell Back Squat

Quads, Glutes, Adductors

Every pedal stroke and running stride is a partial squat repeated thousands of times. Getting stronger at the full squat means each of those reps takes a smaller share of your maximum, and heavy, low-rep squats do that without adding much muscle you then have to carry.

How to do it

  1. Set the bar on your upper back below the bony top of your shoulders and grip it just outside them.
  2. Walk it out and set your feet about shoulder width, toes a little out.
  3. Brace your trunk and sit down until your thighs are at least parallel to the floor.
  4. Stand back up, keeping your chest and hips rising together.

Cues

  • Big breath, then descend
  • Knees follow the toes
  • Drive up through the mid-foot

Common mistakes

  • Hips shooting up first so you lean forward: lighten the bar and lead with the chest.
  • Cutting depth as the load climbs: keep every rep to the same depth.

Swap for: Goblet Squat, Front Squat, Leg Press

Build a session with Barbell Back Squat

Single-leg strength and balance

Bulgarian Split Squat

Quads, Glutes

Running is a series of single-leg landings, and one side is often stronger than the other. The rear-foot-elevated split squat loads one leg at a time and fixes the imbalance a two-leg squat hides.

How to do it

  1. Stand a stride ahead of a bench and rest the laces of your back foot on it.
  2. Let a pair of dumbbells hang at your sides and stand tall on the front leg.
  3. Descend until the back knee hovers an inch off the ground.
  4. Press the front foot down to stand. Complete the set, then switch.

Cues

  • Front foot does the lifting
  • Straight down, straight up
  • Slight forward lean

Common mistakes

  • Front foot too close to the bench: step out so the front knee is not crushed forward.
  • Bouncing off the bottom: pause briefly with the knee just off the floor.

Swap for: Dumbbell Split Squat, Step-Up, Dumbbell Reverse Lunge

Build a session with Bulgarian Split Squat

Calf and Achilles capacity for running

Single-Leg Calf Raise

Calves

The calves absorb and return force on every running stride, and they do it more as you tire off the bike. Slow single-leg raises build that capacity one side at a time.

How to do it

  1. Stand on one foot on the floor with a dumbbell at your side and a hand on a wall for balance.
  2. Rise as high as you can onto the ball of your foot.
  3. Hold the top for a second.
  4. Take two or three seconds to lower. Switch legs after the set.

Cues

  • Highest point every rep
  • Slow on the way down
  • Pressure through the big toe

Common mistakes

  • Short, bouncy reps: use the whole range and slow the lowering.
  • Rolling to the outside of the foot: keep the weight over the big toe.

Swap for: Standing Calf Raise, Seated Calf Raise, Dumbbell Standing Calf Raise

Build a session with Single-Leg Calf Raise

Hamstrings and glutes

The back of the legs drives the pedal and controls your stride. One heavy hinge and one single-leg glute exercise cover them.

Hamstrings and posterior chain

Romanian Deadlift

Hamstrings, Glutes

Strong hamstrings and glutes drive the bike's pedal stroke and control your stride on the run. The Romanian deadlift loads them in a long position with a simple hinge, and you can go fairly heavy without much soreness.

How to do it

  1. Stand tall holding a barbell at your thighs with hands just outside your legs.
  2. Soften your knees and push your hips back, sliding the bar down your thighs.
  3. Lower until you feel a strong stretch in your hamstrings, back flat.
  4. Bring your hips through to return to standing.

Cues

  • Hips back, not down
  • Bar stays on your legs
  • Flat back throughout

Common mistakes

  • Squatting the weight down: keep the knee bend small and fixed.
  • Rounding the back to reach lower: stop where your back stays flat.

Swap for: Dumbbell Romanian Deadlift, Single-Leg RDL, Good Morning

Build a session with Romanian Deadlift

Glutes and hip stability one side at a time

Single-Leg Hip Thrust

Glutes

When one glute is weak, the hip drops on every stride. The single-leg hip thrust builds each glute on its own and trains the pelvis to stay level.

How to do it

  1. Sit on the floor with your upper back against a bench and a dumbbell resting on the hip of your working leg.
  2. Plant that foot with the knee bent and lift the other foot off the floor.
  3. Drive through the planted heel until your hips are level with your knees.
  4. Lower slowly. Do all reps, then switch.

Cues

  • Hips stay level
  • Drive through the heel
  • Chin tucked

Common mistakes

  • Hips tilting to one side at the top: lower the weight until they stay square.
  • Arching the lower back: finish with the glutes.

Swap for: Single-Leg Glute Bridge, Hip Thrust, Dumbbell Hip Thrust

Build a session with Single-Leg Hip Thrust

Upper body for the swim and bike posture

Triathletes need pulling strength for the swim and an upper back that holds up in the aero position. Two pulls, one rear-shoulder exercise and a push-up keep it balanced.

Swim pull strength

Lat Pulldown

Lats

The catch and pull of freestyle are a lat movement with your arm starting overhead. Pulldowns train it through the same path with adjustable load, so you can build strength that helps your stroke hold up for the whole swim.

How to do it

  1. Sit with your thighs fixed under the pads and grip the bar a little wider than your shoulders.
  2. Pull your shoulders down, then pull the bar to the top of your chest.
  3. Pause with your elbows by your sides.
  4. Let the bar rise all the way until your arms are straight.

Cues

  • Shoulders down first
  • Bar to the top of your chest
  • Full stretch overhead

Common mistakes

  • Leaning way back and rowing: stay close to upright.
  • Letting the bar yank your arms up fast: control the way up.

Swap for: Pull-Up, Straight-Arm Pulldown, Neutral-Grip Lat Pulldown

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Upper back and posture on the bike

Seated Cable Row

Upper Back, Lats

Hours in an aero position round your upper back, and swimming loads the shoulders forward. The cable row strengthens the muscles between your shoulder blades that pull you back into a good position.

How to do it

  1. Sit at the cable row with feet on the platform and knees slightly bent.
  2. Grip the handle, sit tall and let your arms stretch forward.
  3. Pull the handle to your stomach, drawing your shoulder blades back.
  4. Let your arms straighten forward again without rounding over.

Cues

  • Sit tall
  • Elbows brush your sides
  • Shoulder blades back at the finish

Common mistakes

  • Rocking the torso back and forth: keep it still and use the back muscles.
  • Shrugging toward your ears: keep the shoulders down.

Swap for: Chest-Supported Row, One-Arm Dumbbell Row, TRX Row

Build a session with Seated Cable Row

Rear shoulders for swimmers

Face Pull

Shoulders, Upper Back

Freestyle and the aero position both pull the shoulders forward. Face pulls train the rear delts and outer rotators, which balance the front of the shoulder and help you hold good posture on the bike.

How to do it

  1. Fix a rope attachment to a cable at about head height and hold both ends.
  2. Step back until the arms are straight and the weight lifts.
  3. Pull the rope toward your forehead, spreading the ends as your hands come past your ears.
  4. Hold a moment, then return slowly.

Cues

  • Elbows high
  • Hands end beside your head
  • Light and controlled

Common mistakes

  • Leaning back to move heavy weight: go light and pause each rep.
  • Pulling low to the chest: keep the elbows up near shoulder height.

Swap for: Band Face Pull, Reverse Pec Deck, Band Pull-Apart

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Pressing and shoulder stability

Push-Up

Chest

A swim needs some pushing strength to finish the stroke, and a strong push-up also trains the trunk to stay stiff. It is the easiest pressing exercise to fit around a busy week.

How to do it

  1. Put your palms down a little wider than your shoulders and step back into a long plank.
  2. Brace your trunk and glutes.
  3. Bend your elbows to lower your chest close to the floor.
  4. Push back up to straight arms.

Cues

  • Body stays rigid
  • Elbows angled back
  • Full range

Common mistakes

  • Hips sagging: shorten the set or raise your hands on a bench.
  • Head poking forward: keep your neck in line.

Swap for: Incline Push-Up, Flat Dumbbell Press, Plank to Push-Up

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Trunk stability

The trunk's job in all three sports is to stay still while the limbs move. Train that directly with a side plank, a dead bug and a one-sided carry.

Lateral trunk stability

Side Plank

Abs

Holding your pelvis level on the run and your body steady on the bike both rely on the muscles along the side of your trunk. The side plank trains them with no equipment and almost no recovery cost.

How to do it

  1. Lie on one side with your elbow right under your shoulder and legs stacked.
  2. Lift your hips until your body is in one line from head to feet.
  3. Hold, breathing slowly, with your hips pushed forward.
  4. Lower and switch sides.

Cues

  • Hips up and forward
  • Elbow under shoulder
  • Breathe

Common mistakes

  • Hips drifting back: push them forward so you stay in one line.
  • Holding until your form collapses: end the set while the line is still straight.

Swap for: Copenhagen Plank, Dumbbell Side Plank, Pallof Press

Build a session with Side Plank

Trunk control with moving limbs

Dead Bug

Abs

Swimming, cycling and running all move the arms and legs while the trunk stays steady. The dead bug trains exactly that, lying on your back so your lower back is supported.

How to do it

  1. Lie on your back with arms pointing at the ceiling and knees bent at 90 degrees over your hips.
  2. Press your lower back gently into the floor.
  3. Slowly reach one arm overhead and straighten the opposite leg toward the floor.
  4. Return and switch sides, keeping your back flat.

Cues

  • Lower back stays down
  • Slow and controlled
  • Exhale as you reach

Common mistakes

  • Back arching off the floor as the leg goes out: shorten the reach.
  • Rushing the reps: take three seconds for each reach.

Swap for: Plank, Pallof Press, Side Plank

Build a session with Dead Bug

Anti-lean trunk strength and grip

Dumbbell Suitcase Carry

Abs, Quads

Carrying a heavy dumbbell on one side makes your trunk work to keep you upright, the same job it does late in a run when form starts to fall apart. It is a simple, low-soreness finisher.

How to do it

  1. Pick up one heavy dumbbell and let it hang at your side.
  2. Stand tall with your shoulders level.
  3. Walk with steady steps without leaning toward or away from the weight.
  4. Put it down, switch hands and walk back.

Cues

  • Shoulders level
  • Tall posture
  • Smooth steps

Common mistakes

  • Leaning away from the dumbbell: use a weight you can carry upright.
  • Letting the dumbbell bump your leg: keep it still at your side.

Swap for: Farmer's Walk, Side Plank, Plate Overhead Carry

Build a session with Dumbbell Suitcase Carry

Put them together: example sessions

Each session below picks from the exercises above for one situation, with the sets, reps, rest and RIR filled in. Open one in the session builder to change a pick, price it from a recent set, and add it to RIRLift.

Session 1

Off-season: build the base

Open in the session builder
  • Workouts2× a week
  • Working sets30 a week
  • Per workout~35 min
  • EquipmentBarbells, Lat Pulldown, Dumbbells, Cable Row

Your racing season is over, your endurance volume is lower, and you have two gym sessions a week to spare.

With less swimming, cycling and running, this is the time to build strength. Two full-body sessions use moderate weights for 8 to 12 reps at 2 reps in reserve, enough to build strength and the tendons' tolerance to load without much soreness. Each session covers legs, a hinge, upper body and trunk, so missing one still leaves a complete week.

Session A
ExerciseSets × repsRIRRest
Barbell Back Squat 3 × 8–10 2 2 min
Romanian Deadlift 3 × 8–10 2 2 min
Lat Pulldown 3 × 10–12 2 90 s
Push-Up 3 × 8–15 2 1 min
Side PlankSeconds per side. 3 × 20–40 2 45 s

Open Session A in the session builder

Session B
ExerciseSets × repsRIRRest
Bulgarian Split SquatPer leg. 3 × 8–12 2 90 s
Single-Leg Hip ThrustPer leg. 3 × 10–12 2 1 min
Seated Cable Row 3 × 10–12 2 90 s
Single-Leg Calf RaisePer leg. 3 s down. 3 × 12–15 2 1 min
Dead BugPer side. 3 × 8–10 2 45 s

Open Session B in the session builder

How to run it
Do Session A and Session B at least two days apart, after an easy swim or ride or on a rest day. Keep them away from the day before any hard interval session.
How to progress
Add a rep per set until you reach the top of the range at 2 reps in reserve, then add weight. After six to eight weeks, move to the build plan.
Open in the session builder

Session 2

Pre-season: heavier and shorter

Open in the session builder
  • Workouts2× a week
  • Working sets23 a week
  • Per workout~35 min
  • EquipmentBarbells, Lat Pulldown, Dumbbells, Adjustable Cable

You are coming out of the off-season, your training volume is rising, and you want more strength without more time in the gym.

Once the base is built, heavier sets of 4 to 6 reps on the squat and hinge build strength with fewer total reps, which means less fatigue for the run and bike. Rest periods are longer so each set is good quality, and the upper body and trunk drop to maintenance volume.

Heavy A
ExerciseSets × repsRIRRest
Barbell Back Squat 4 × 4–6 2 3 min
Lat Pulldown 3 × 6–8 2 2 min
Single-Leg Calf RaisePer leg. Add weight. 3 × 8–12 2 1 min
Dumbbell Suitcase CarrySteps per side. 2 × 30–40 2 1 min

Open Heavy A in the session builder

Heavy B
ExerciseSets × repsRIRRest
Romanian Deadlift 4 × 4–6 2 3 min
Bulgarian Split SquatPer leg. 3 × 6–8 2 2 min
Face Pull 2 × 12–15 2 1 min
Side PlankSeconds per side. 2 × 30–45 2 45 s

Open Heavy B in the session builder

How to run it
Do Heavy A and Heavy B twice a week, 48 hours or more apart. On interval days, lift after the intervals, not before.
How to progress
Add weight to the squat and Romanian deadlift whenever you reach 6 reps at 2 in reserve. Do not add sets; when the season gets close, move to the race-season plan.
Open in the session builder

Session 3

Race season: one session to keep strength

Open in the session builder
  • Workouts1× a week
  • Working sets10 a week
  • Per workout~30 min
  • EquipmentBarbells, Cable Row

You are racing every few weeks or deep in your key-race build, and endurance training takes almost all your time and energy.

Strength fades slowly, so one short session a week holds most of what you built. The session keeps the heavy squat and hinge at low volume and 3 reps in reserve, so you are not sore for key workouts, and finishes with the rows and calf raises that help you hold form late in a race.

Maintenance
ExerciseSets × repsRIRRest
Barbell Back Squat 2 × 4–5 3 3 min
Romanian Deadlift 2 × 5–6 3 2:30 min
Seated Cable Row 2 × 8–10 3 90 s
Single-Leg Calf RaisePer leg. 2 × 10–12 3 1 min
Dead BugPer side. 2 × 8 2 45 s
How to run it
Do this session once a week, right after an easy swim or on an easy day. Skip it in race week, or do it at least four days before the race.
How to progress
Hold the weights from pre-season. If a set feels harder than 3 reps in reserve, drop the weight for that week and keep going.
Open in the session builder

Make it fit you

Questions

How often should triathletes do strength training?

Twice a week in the off-season and pre-season, at least 48 hours apart, and once a week during racing to keep what you built. More than that usually takes away from swimming, cycling and running.

What are the best strength exercises for triathletes?

The squat, Bulgarian split squat, Romanian deadlift, single-leg hip thrust and single-leg calf raise for the legs, the lat pulldown, seated row and face pull for the upper body, and side planks, dead bugs and carries for the trunk.

Will lifting make me bulky as a triathlete?

Not with two short sessions a week next to endurance training. Low-rep, heavy sets mainly build strength, and the volume of swimming, cycling and running makes large muscle gains unlikely.

When should I lift on a day with intervals?

After the intervals, so the hard session is done fresh. On easy days, you can lift before or after. Keep heavy legs away from the day before your key run or bike workout.

Should triathletes lift heavy or light?

Both, in turn. Moderate weights for 8 to 12 reps in the off-season, then heavier sets of 4 to 6 in pre-season, then low-volume heavy sets once a week in the race season.

Should I stop strength training before a race?

Skip lifting in race week, or keep the last session at least four days before the race. A full break from lifting during the season costs strength that takes weeks to rebuild.