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August 5, 2026 · LexPD

Nobody runs a marathon without training for it

Ask a candidate how their prep is going and they'll tell you about material. They're two thirds of the way through. They're worried about Business Law or Civil Litigation. They've made a chart.

Almost nobody says the thing that actually worries us: I have never in my life concentrated on anything for four and a half hours straight, and in six weeks I'm going to have to.

That's the gap we see most often. It's also the easiest one to close.

This is a distance event

The shape of the exam is published, and it's worth reading slowly. 160 multiple choice questions. Four hours and thirty minutes. Open book. Every question is worth one point, and there's no penalty for a wrong answer.

None of that is difficult. What's difficult is the fourth hour.

By then you've read something like forty thousand words of dense fact pattern. You've made a hundred and twenty decisions, most of them between two answers that both look defensible. You've been in the same chair the whole time. And the questions in the last section count for exactly as much as the ones in the first.

We see what that does in the data every week. A candidate scores 81% across the first third of a paper and 61% across the last. The material didn't get harder, because questions are mixed throughout rather than ordered by difficulty. What changed was the candidate. On a 160 question paper, a twenty point drop across the back half is worth around ten marks. That's more than most people's weakest subject costs them.

Those are marks lost to tiredness by someone who knew the answers.

Endurance is a skill, and skills are trained

This is where the marathon comparison stops being a figure of speech.

Nobody enters a marathon having only read about running. The training isn't really about technique. It's about teaching your body to do the thing for the whole distance without falling apart. You put in the long runs because there's no other way to find out where you break, and no other way to move that point further out.

Exam endurance works the same way, and it responds the same way. In our experience, most candidates who sit two or three full length timed papers watch that late paper decline flatten out. Not because they learned more law in between, because often they didn't. It's because the fourth hour stopped being unfamiliar.

You can't get that from a question bank you dip into for twenty minutes on the train. Short sets train recall. Only the full distance trains the distance.

Why our questions run long

Our questions are longer than they strictly need to be. That's deliberate, and candidates do sometimes tell us so.

Think of it as a weighted vest. Train under a heavier load than the event demands and the event feels lighter. A candidate who has spent four and a half hours working through dense fact patterns, picking them apart, throwing away the irrelevant half, holding the rest in their head long enough to choose, has built a tolerance that shorter practice never builds.

We'd rather your practice papers were the hardest reading you do all month.

What we measure, and why that's the whole point

Here's the problem with training endurance on your own. You can't see it.

You can mark your own practice paper and count your score. What you can't do is work out whether you got question 140 wrong because you didn't know it, or because it was question 140. Those are completely different problems with completely different fixes, and the score looks identical either way.

So we timestamp every answer. Your report shows your accuracy across the first, middle and final third of the paper, in the order you actually saw the questions. Where a decline shows up, we tell you what it's costing you in marks.

That one number changes what a candidate does next. Someone losing ten marks to fatigue and four marks to Public Law has been studying the wrong thing, and no amount of rereading fixes it. The answer is to sit another full paper.

The same logic runs through the rest of the report. We measure your pacing. Whether the questions you flagged really were the ones you got wrong. Whether changing your answers helped you or cost you. Where your losses cluster, and whether a weak subject is weak all the way through or only where the question asks you to analyse rather than recall.

None of that shows up in a score. All of it can be trained.

What we'd tell you to do

Sit a full one early, before you feel ready. It will be uncomfortable and the result won't flatter you. That's the point. You're setting a baseline and finding out where your concentration currently gives out, while there's still time to move it.

Then study whatever the report puts at the top. It ranks findings by the marks actually at stake rather than by your lowest percentage, because those aren't the same list, and candidates reliably study the wrong one.

Then sit another. A weakness that shows up on one paper might have been a bad morning. A weakness that survives two separately written papers is real, and we'll tell you which of yours is which.

Then keep going, at full length, under the clock, right to the end. Not because we sell them. Because the fourth hour is the part nobody trains, and it decides more results than anyone expects.

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