Line marking a sports pitch: set-out, GPS and repaints
5 min read · Updated June 2026
Crisp, square, correctly-sized lines are the difference between a pitch that looks the part and one that does not — and on a competitive surface, accuracy is a rules issue, not just an aesthetic one. Marking out falls into three jobs: the initial set-out, ongoing repaints, and increasingly, GPS robotic marking.
Here is how each works and when you would use it.
Initial set-out: getting it square
A fresh pitch has to be set out accurately from scratch. The corners must be true right angles and the dimensions correct for the sport and age group. Done manually, this means string lines and geometry — the 3-4-5 method (Pythagoras) to square the corners — and careful measuring before a drop of paint goes down.
It is painstaking, and getting it wrong means a season of crooked lines, so set-out is the one job most clubs are happy to hand to a specialist.
GPS marking: accuracy without the string
GPS robot markers have changed pitch marking. The operator selects the pitch type, and the machine drives the lines automatically to survey-grade accuracy — no string lines, no measuring, and a perfect set-out every time. For grounds teams running many pitches, or anyone who wants a flawless initial set-out, it is a step change.
Repaints: keeping lines sharp
Once a pitch is set out, the lines need topping up through the season — typically weekly in peak play. Transfer-wheel and spray-line markers run over the existing lines, so repaints are quick and inexpensive compared with a set-out.
Multi-sport overlays
Shared surfaces often carry lines for more than one sport, marked in different colours so they can be told apart. Overlaying accurately so the sports do not interfere with each other is a specialist job — and GPS marking makes it far more reliable.
Indicative costs: an initial set-out commonly runs from around £150 to £400 depending on sport and size, while routine repaints are typically £25–£60 a time. Post a brief for an exact quote.
Common questions
Is GPS marking worth it for one pitch?
For a one-off set-out it can be, because the accuracy is excellent. For ongoing weekly repaints a conventional marker is usually more economical. Many clubs use GPS for the set-out and a transfer marker for top-ups.
How often do lines need repainting?
In peak season, roughly weekly, depending on the paint, mowing and weather. Quieter periods need less.
Can one contractor mark multiple sports on a pitch?
Yes. Multi-sport overlays in different colours are common; accuracy is the key, which is where experienced markers and GPS machines earn their keep.
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