Do Not Stop Lifting in Season.

It happens at almost exactly the same point every year, and it happens so gradually that nobody notices they have made a decision.

All winter they lift twice a week and they are good about it. Then the clocks change, the volume climbs, the long rides get longer, and the gym session becomes the thing that gets moved. Moved to Friday. Then moved to next week. By the middle of May it has quietly stopped existing, and nobody ever sat down and chose that.

Then in August, six weeks out from the race they have organised their entire year around, the Achilles starts talking. Or the hip drops at kilometre thirty and the knee complains about it. They are the fittest they have ever been and the most fragile they have been since January, and those two facts are the same fact.

You did not lose the strength because you raced. You lost it because you stopped, and then you asked your body for the hardest work of the year without it.

The Fear Is Real and Much Smaller Than the Folklore

The reason people give, when they give one, is the interference effect. The idea that endurance work blunts strength adaptation and strength work blunts endurance adaptation, so combining them means doing both badly.

It is a real phenomenon. It is also considerably smaller than gym conversation suggests, and at the volumes a recreational or age-group athlete actually trains at, it is close to irrelevant. Where it shows up meaningfully is at high strength volume stacked on high endurance volume with no separation between them, which is not what anyone is proposing here.

What the research consistently supports is the opposite of the fear. Endurance athletes who keep strength training in the programme perform better, and heavy lifting improves running economy, which is to say it makes you cost less at the same pace. That is a performance benefit, not just an insurance policy.

And the other half of it: strength is lost a lot faster than it is built. The months of work you did between November and February will not sit patiently waiting for you until October. Neither will the tendon and bone qualities underneath it, which took longer to build than the muscle did and are exactly what you are relying on when you ask for your biggest running weeks of the year.

What In-Season Lifting Actually Looks Like

Nothing like your winter block, and this is where people go wrong in the other direction. They keep the off-season session, find it wrecks their Thursday run, and conclude that lifting in season does not work.

In season you are not building. You are holding on to what you built, for as little cost as possible.

Two sessions a week. Twenty to thirty minutes. Two to four exercises. Load reasonably heavy, keep the repetitions low, and stop several repetitions short of failure every single set. The heavy load is what preserves the strength. The low volume and the distance from failure are what keep the cost off your legs. Going to failure is what generates the soreness that ruins the next two days, and it buys you almost nothing you need right now.

No new exercises in season. Ever. A movement you have not done before will make you sore in a way a familiar one will not, and race season is not the time to find out how your body responds to Bulgarian split squats.

What to keep, if you only keep a few things: something single leg, something for the posterior chain, something for the calf and ankle complex, and one press or pull for the swim. That is the list. The accessories can wait until November.

Where It Goes in the Week

This decides whether it works, and most people put it in the worst possible place.

Separate strength from your key endurance sessions by at least six hours where your life allows it, and by at least three where it does not. If you genuinely cannot separate them, put the lift after the run rather than before it, so that you are not doing your quality running on legs you have just loaded.

Stack hard on hard, and protect easy days as genuinely easy. Lift on a day that is already a hard day, so that the following easy day can do its job. The single most common mistake is lifting the day before the key session of the week, which means the session you cared most about gets performed on compromised legs, and then everyone blames the lifting.

Race week: last proper session seven to ten days out. After that, if you do anything at all, keep it short, light and familiar. Nobody has ever got faster in race week and plenty of people have got sore.

The Honest Trade

I am not going to pretend this is free. Two sessions a week is roughly an hour of your training time, and it draws on the same recovery budget as everything else does. In a genuinely maxed out week, something has to give.

What should give is not the strength work. It is the third mediocre aerobic session, the one that exists because it was in the plan rather than because it has a job. Swap that for twenty five minutes of heavy singles and calf work and you will finish the season faster and, far more importantly, you will finish it.

And watch the load. If your morning heart rate is climbing across a block where you have added lifting back in, the answer is to reduce the lifting volume, not to abandon it. Two sets is still two sets. Zero is what causes the problem in August.

The Two Sessions, Written Out

People agree with all of the above and then do not do it, because nobody ever tells them what the session actually is. So here it is, and it is deliberately unimpressive.

Session A, roughly twenty five minutes. Warm up five minutes, whatever gets your hips and ankles moving. Then a heavy hinge, a trap bar deadlift or a Romanian deadlift, three sets of four, stopping well short of anything that feels like a maximum. Then a split squat or a step up, three sets of six each leg, loaded enough that six is honest work. Then straight leg calf raises, three sets of ten, slow on the way down. Done.

Session B, roughly twenty five minutes. Warm up. A squat variation you have used before, three sets of four. A single leg bridge or a hamstring curl, three sets of eight. Something for the shoulder that swims, a horizontal pull for three sets of eight, plus external rotation work. Then bent knee calf raises, three sets of ten, which loads the soleus and is the single most neglected exercise in endurance sport.

That is it. Six or seven exercises across the whole week. No supersets, no finishers, no circuits, nothing measured in how destroyed you feel afterwards. You should leave the gym thinking that was too easy, and that feeling is the design working.

If you have twenty minutes and not thirty, cut the second exercise, not the calf work. If you have ten minutes, do the calf raises and the split squat and go home. A tenth of the session done consistently across a season beats the full session done in January and abandoned in April, which is the actual choice most people are making without realising it.

The Challenge

Open your calendar and find the last time you did a proper strength session.

If you have to scroll, you already know what this piece is about. Put two thirty minute sessions in the diary this week, on days that are already hard, and treat them as immovable as the long ride.

You will not feel the benefit for eight weeks. You would have felt the absence in August.