Race Day Split Planner
Race-Day Split Planner
Turn a goal time into an actual plan — a full split-by-split table showing exactly what pace to hold at every km or mile, even, negative or positive.
Enter your distance and goal time (or pace), pick a pacing strategy, and I'll generate the full table — the same approach I use when building race plans for the runners I coach in Manchester and online.
Once your splits are generated, you can also create a free printable race band — a slim strip showing your target time at each marker, ready to print, cut out, and carry with you or tape around your wrist on race day.
Build your splits
Fill in distance, then either a goal time or pace — leave the other blank.
Fill in your distance and goal time (or pace), then hit "Generate my splits" — your full split table will appear here.
| Split | Marker | Split time | Elapsed |
|---|
Splits assume a flat course and settled pacing from the gun. Real races need adjustment for hills, weather, crowding at the start, and aid-station stops.
For longer races, print fewer splits so the band fits one page:
Wrist circumference — adds ~20mm overlap for taping.
Even, negative or positive — which should you pick?
Even splits hold the same pace throughout — the safest default for most goal-time attempts, and the easiest to execute without a GPS watch doing the thinking for you.
Negative splits (running the second half faster than the first) are what most fast, well-executed races actually look like — starting conservatively banks fitness for a stronger finish rather than paying for an overambitious start. This planner builds in a gentle, coach-realistic negative progression rather than an extreme even-more-so-later curve.
Positive splits (starting faster, easing off later) are rarely the goal — but seeing the table can help you understand how much a fast start would cost you later on, which is often the more useful lesson.
Want a training plan built to get you race-fit for whichever pace you're targeting? Take a look at bespoke training plans or online coaching, check your training paces, or get in touch for a free, no-pressure chat.