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Marathon pace: find it and sustain it

Updated on 2026-07-01

The marathon is largely decided by pace management. Starting too fast is the mistake that costs the most. Here's how to find and sustain the right pace.

Determine a realistic pace

Your marathon pace should come from your recent performances, not your hopes. A reliable way: start from your recent time over 10 km or half marathon and estimate your marathon potential (our race time calculator does it for you). Warning: these predictions assume you've done the specific endurance work — otherwise aim more conservatively.

Train for it specifically

Marathon pace is trained: incorporate "race pace" segments into your long runs (for example the last kilometres of a 25-30 km run). Your body learns to hold it when already tired — exactly the situation on race day.

Manage your start

The first kilometres always feel "too easy": that's normal, and it's intentional. Aim for your target pace from the start, never accelerating under the effect of adrenaline. A negative split (second half as fast or faster) is the best strategy.

Avoid the "wall"

The 30km wall often comes from two causes: starting too fast, and/or not eating enough. You need to fuel early and regularly (carbohydrates), before you feel hungry or thirsty. See our principles of fueling during exercise.

The role of freshness

Arriving rested changes everything: good tapering allows you to sustain your pace longer. Monitor your freshness in the days before the race.

Pacing calibrated to you

Sports Coach AI calculates your marathon pace from your actual data, incorporates it into your long runs and helps you arrive fresh on race day — to sustain your pace all the way to the finish.

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