Strength inside a marathon block

You said three things: your strength is low relative to where you want it, you feel heavy and carry fat you'd rather not, and you want to become a strong athlete. All three are reachable. Not all three are reachable during this marathon block, and pretending otherwise is how people end up doing neither well.

Here is the actual physiology you're up against. High-volume endurance training blunts the strength and muscle-building response to lifting — the interference effect. It scales with how much running you do, it hits the legs far harder than the upper body, and at 60–66 km a week it is not a small effect. Simultaneously, you want to be in a calorie deficit to lose fat, and a deficit is the other thing that suppresses muscle gain. Stack a peak marathon week on top of a deficit on top of hypertrophy training and you don't get all three adaptations; you get an injury.

So the plan sequences them instead:

• Now through week 8 — running volume is still moderate. This is your window. Lift three times a week during the on-ramp, twice a week after, eat in a modest deficit, and get genuinely leaner and measurably stronger.
• Weeks 9–14 — running takes over. Strength drops to a maintenance dose that holds everything you built. Eating goes to maintenance. You are not trying to gain here; you are trying not to lose, and to arrive at the start line uninjured.
• After the race — this is where "strong athlete" actually gets built, and there's a block sketched at the bottom of this page for it.

The good news is more interesting than the constraint. Two heavy sessions a week is not a consolation prize for a runner. Heavy strength work plus low-amplitude plyometrics improves running economy by a few percent in trained distance runners — meaning you hold the same pace at a lower oxygen cost — and it does it without adding meaningful bodyweight. That improvement is worth more to your marathon than the Tuesday session is. It is one of the few genuinely free lunches in endurance sport.

And on feeling heavy: at 71 kg, losing fat is directly a performance lever. Every kilogram costs you roughly 2–3 seconds per kilometre at marathon pace — call it a minute and a half over 42 km per kilo. Losing three or four kilos of fat between now and week 8 is worth more than any session in this document. Adding upper-body muscle, by contrast, is performance-negative for a marathon. That's not a reason to skip upper-body work — you want to be strong, and strong is a legitimate goal on its own terms — but it's the reason the upper-body work here is written to maintain and slowly build rather than to grow you.

What you've described — pain on the outside of the right knee, not sharp, tolerable while running, most noticeable walking afterwards, arriving since you started running again — is the single most recognisable presentation in distance running. It looks most like iliotibial band syndrome. I want to be careful with that word: I can't examine you, and lateral knee pain also comes from the patellofemoral joint, the popliteus tendon, the biceps femoris insertion and the lateral meniscus. But the pattern fits ITB well, the plan below is the right first move for most of those causes anyway, and the tests in the next block will sharpen the picture considerably.

One thing worth separating: this is probably not the same problem as the deep-squat pain and clicking from your old plan. That was anterior and load-related. This is lateral and volume-related. Treat them as two files.

Three tests, five minutes, do them today

1. Point to it with one finger. If the sorest spot sits on the bony bump on the outside of the thigh just above the joint line, roughly 2–3 cm above the knee crease, that's the classic ITB location. If it's on the joint line itself, or behind it, that points elsewhere — note which.
2. Stairs. Going down is the discriminator. ITB and patellofemoral pain both dislike descending; ITB tends to bite at around 30 degrees of knee bend. Note whether down is clearly worse than up.
3. Single-leg squat, filmed from the front. Stand on the right leg, phone on the floor, bend to about 45 degrees, five slow reps. Then the left for comparison. Watch for the right hip dropping on the non-standing side, or the right knee drifting inward over the big toe. That collapse is what loads the outside of the knee, and it is exactly what the hip block below fixes.

What actually works, and what doesn't

Two things you'll be told to do that are largely a waste of your time. Stretching the IT band — it is dense fascia anchored along the femur, with a tensile stiffness closer to tendon than muscle. You are not lengthening it with a standing lean-over. Foam rolling the IT band itself — the current understanding is that the pain comes from compression of a richly innervated fat pad underneath the band, not from friction, so grinding the band down onto that structure is painful and mechanistically backwards. Roll the tensor fasciae latae at the front of the hip, the outer quad, and the glutes instead. That's defensible and it feels better.

Three things that do work, in order of evidence:

• Hip abductor and external rotator strength. Runners with lateral knee pain reliably test weaker in hip abduction on the affected side, and structured hip strengthening resolves symptoms in the large majority within about six weeks. This is the main intervention and it's the daily block below.
• Cadence. Raising your step rate by 5–10% reduces hip adduction and the strain on the band, at zero fitness cost. Count your steps for 30 seconds on an easy run, double it. If you're under about 165 per minute, aim to add 5% and hold it on easy runs only. A metronome app or a 170 bpm playlist does the job.
• Terrain. Downhill running is the worst possible stimulus for this, and cambered roads are the second worst — the leg on the low side of the camber sits in extra adduction all run. Your August-to-October treadmill default is genuinely lucky here: a belt has no camber and no downhill. When you move outdoors in November, alternate which side of the road you run on.

The three tests, demonstrated

Noble compression test Physiotutors Press the epicondyle, then straighten the leg. Pain reproducing at about 30° is positive. Open on YouTube ↗

Renne's test Physiotutors Single-leg semi-squat to about 30°. Pain sharpening at that depth is positive — yours is. Open on YouTube ↗

What to look for in a single-leg bend Physiotutors The hip drop and inward knee drift you are filming for. This is the cause, not the symptom. Open on YouTube ↗

This is the highest-value thing on this page and the easiest to skip. It needs no gym and no equipment beyond a mini-band. Do it in the evening, or after a run, or while something is cooking. Frequency beats intensity here — six honest minutes most days outperforms twenty minutes twice a week, because you are chasing a control and endurance quality, not a strength maximum.

Work the right side first and match the left to it, so the weak side sets the dose.

Your marathon plan already writes "rest + strength" on Wednesday and Friday. Those are the right two days, but they are not interchangeable, and the reason matters more than it looks.

All heavy leg work lives on Wednesday. It sits 24 hours after the quality session, when you're already fatigued and nothing is at stake, and a full 48 hours before Thursday's medium-long run. It is also as far from Saturday as the week allows.

Friday is deliberately light on legs. This is the correction most people miss. Loading the legs on Friday puts peak muscle soreness — which arrives 24 to 48 hours later — directly on top of the most important run of your week. One heavy Friday squat session can quietly ruin four consecutive Saturdays before you work out why the long runs feel bad. So Friday is chest, back, arms, core and hips: everything that makes you stronger without making Saturday worse.

Does one heavy leg session a week build legs? Not much. But it holds strength very well — maintaining strength needs far less volume than gaining it did, provided the intensity stays high. That is why the leg work in this plan is heavy and brief rather than moderate and long. Sets of five hold what sets of twelve cannot.

Warm up six minutes: five easy on the bike, then leg swings, bodyweight hinges, and the banded lateral walk from the hip block. Then, from block week 3 onward, the ankle plyometrics — they go first, while you're fresh, and they take two minutes.

1. Never train to failure. Stop every set with 2–3 reps left in the tank, all block. This is the single biggest difference between lifting as a runner and lifting as a lifter. Failure buys a small amount of extra stimulus at a large cost in soreness and recovery, and you are spending that recovery on running.
2. Double progression, on the top of the range. When you can hit every set at the prescribed reps with 2–3 in reserve, add the smallest available increment next week — 2.5 kg on the bar, 2 kg on a dumbbell — and expect the reps to feel hard again. That's it. No percentages, no maxes.
3. When the sets drop, the weight does not. Going from 4 × 6 to 3 × 5 to 2 × 5 is a volume reduction, not an intensity one. The weight on the bar should be the same or higher in week 11 than in week 4, on half the sets. This is what makes a maintenance dose actually maintain.
4. Cut exercises, not rest. Short on time on a Wednesday? Drop the carry and the second calf variant. Do not compress the rest on the RDL and the pull-up — three heavy sets with full rest beats six rushed ones, and the rushed version also costs you more recovery.

Two ordering rules that are not negotiable

• If you ever lift on a run day, lift after the run, and leave as many hours as you can. Lifting first degrades the run; running first degrades the lift a little less, and the run is the priority.
• Nothing heavy for the legs within 36 hours of the long run. That's the whole reason Friday looks the way it does. If you have to move Session A, move it earlier in the week, never later.

You want to be leaner and you want to be stronger. Both need protein; they disagree about calories. The resolution is timing, not compromise.

• Protein: 130–155 g a day, every day, all 19 weeks. That's roughly 1.8–2.2 g per kilo. It is the one number that serves fat loss, strength and recovery simultaneously, and it's the number most runners miss by a wide margin. Spread it across 3–4 feedings rather than loading it at dinner.
• Deficit now, through week 8 only. About 350 kcal below maintenance — enough for roughly 0.3–0.4 kg a week, which is 3–4 kg by the end of block 2. Slower than you'd like. Faster loss than that at rising running volume costs muscle and bone, and the bill arrives as a stress fracture in week 11.
• Maintenance from week 9 onwards. Not negotiable. Running 55–66 km a week in a calorie deficit is the textbook route to low energy availability: bone stress injuries, suppressed immunity, flat training, and adaptations that simply don't happen. Whatever fat is left at week 9 stays until after the race. It'll come off faster afterwards anyway.
• Carbohydrate is a training variable, not a moral one. Eat properly before Tuesday's session and Saturday's long run, and eat carbohydrate afterwards. The deficit comes out of the easy days, never out of the two runs that matter.
• Creatine, 3–5 g daily, if you want one supplement. Well-evidenced for strength, cheap, no endurance downside. It brings about a kilo of water weight in the first fortnight, which will look like the fat loss stalled. It isn't. Start it now rather than mid-block so the weight shift doesn't confuse your week-8 read.

Take these before you start, because in eight weeks you will not remember what "annoying" felt like, and the knee work in particular is impossible to judge without a number.

Everything above is strength inside a marathon block, which means it is constrained on every side. The version of your training where strength is the priority starts about two weeks after the finish line, and it's worth knowing it exists so that this block doesn't feel like a detour.

• Weeks 1–2 post-race. Nothing structured. Walk, swim, easy jogging if you want it. The hip block continues — it's six minutes and it's now a permanent fixture.
• Weeks 3–10 — a genuine strength block. Running drops to 3 easy runs a week, 25–30 km, purely to hold aerobic fitness. Lifting goes to 4 sessions, upper/lower split, with real leg volume: squats to whatever depth your knee has earned by then, heavy hinges, and the weighted calisthenics progressions from your old plan run properly rather than squeezed in. Eat at maintenance or a small surplus. This is the block where the numbers actually move, and it will not conflict with anything.
• Then marathon two. Your plan's own roadmap has it peaking at 80–85 km with two quality days. You'll start it stronger and lighter than you started this one, which is exactly how the sub-3 sequence is supposed to compound.

The strength you build in that post-race block is also what makes the next marathon survivable at higher volume. It isn't a break from the running goal. It's the next phase of it.