Marathon Pacing and Race-Day Strategy
Even splits, course markers and what to do when it gets hard.
- Written by
- YourMarathonPace
- Published
- 9 November 2026
This guide is general information, not medical or coaching advice. It has not yet been reviewed by a qualified coach. Speak to a doctor before starting a new training programme, especially if you have a health condition or injury.
Even vs negative splits
For most runners, the safest plan is even pacing, or a slightly faster second half (a negative split). Starting too fast is the most common pacing mistake, and the time it seems to save is usually lost later in the race.
The first 10K
Crowds and adrenaline make early miles feel easy. Aim for goal pace or a few seconds slower, check each split against your pace band, and don't chase time lost at a crowded start all at once. Spread it over several miles.
Hills, heat and wind
On hills, aim for steady effort, not steady pace. Expect to slow down uphill and pick it up downhill. In heat, slow down from the start and drink to your plan. On a hot day, being slower than your goal is a sensible decision, not a failure. Tuck in behind other runners in a headwind.
The last 10K
This is where pacing and fuelling pay off. Break it into short sections, keep fuelling, and focus on keeping good form. If you feel dizzy, confused or unwell, stop and get help from medical staff.
Sources
- Exercise and fluid replacement (position stand) — American College of Sports Medicine (2007)
- Athletic records and human endurance — American Scientist (Riegel, 1981)
This guide is general information, not medical or coaching advice. It has not yet been reviewed by a qualified coach. Speak to a doctor before starting a new training programme, especially if you have a health condition or injury.