C-DRONE GUIDE · 9 SEPTEMBER 2026
Racecourses and drones: mapping track vigour, rails and price
France has 233 racecourses according to the Fédération nationale des courses hippiques (FNCH). Only a handful — Longchamp, Auteuil, Saint-Cloud, Chantilly, Maisons-Laffitte, Deauville — are run directly by France Galop; most of the rest are small local venues run by non-profit racing societies that rely heavily on volunteers for turf maintenance. A national seminar organised by France Galop in March 2024 brought together representatives from 33 racecourses to discuss water management and turf disease — a sign that track upkeep remains an unresolved technical issue for much of the network. Here is what recent research says about track uniformity and injury risk, what a drone survey can concretely track, and what it costs.
Published on 9 September 2026, reviewed on 11 September 2026 — regulations in force as of September 2026.
What recent research says about track condition and injury
The firmness and evenness of a turf track are not simply a matter of racing comfort — they are a genuine veterinary research subject. A study by Legg, Gibson, Gee and Rogers, published in 2026 in the Equine Veterinary Journal, combined sixteen seasons of flat racing in New Zealand (2008/9 to 2023/24, over 40,000 races) with an objective Track Condition Score and seven seasons of musculoskeletal injury data, to examine how the track surface interacts with racing speed and injury risk in Thoroughbreds (see the study on Google Scholar). This work builds on decades of racing-surface science: a track that is too firm, and especially one whose firmness varies sharply from one area to another, makes it harder for a horse to adapt its stride and raises the risk of injury.
No published study has looked at drone-based mapping of French racecourse track condition: the connection drawn below remains a logical extrapolation, not a method validated by veterinary research itself, which relies on ground measurement tools (penetrometer, GoingStick-type devices) at the well-equipped major tracks. But track evenness depends directly on how evenly water and turf vigour are distributed across the surface — two parameters an aerial survey is well placed to map, more cheaply than a network of ground sensors, for the many racecourses that have none.
Drone vegetation index, more reliable than a ground survey
A study by Yousfi and Mauri, published in 2022 in Agricultural Water Management, compared several monitoring methods across six turfgrass mixtures under two irrigation regimes: a "Green Area" vegetation index calculated from RGB images taken on the ground or by drone, NDVI, canopy temperature and soil moisture. The result: the Green Area index obtained from drone imagery explained turf variability better than the same measurement taken on the ground or than NDVI, and clearly separated drought-tolerant mixtures from drought-sensitive ones (see the study on Google Scholar).
Applied to a racetrack, the principle carries over directly: a regular multispectral flight over the full course produces a vigour and moisture map that reveals zones where the turf is drying out or weakening faster than the rest of the track — differences that are often invisible to the eye from ground level as long as the grass still looks green on the surface. For a sand or synthetic trotting track, the value is different: photogrammetric surveying documents surface levelling and water-pooling zones after rain, a direct indicator of a track that rides unevenly.
Rails, obstacles and surrounds: the visual inspection
Beyond the turf, a racecourse has several kilometres of safety rail, and, for jump tracks, hedges and water jumps whose integrity directly affects jockey and horse safety. An RGB flight along the course spots a loose rail fixing, a sagging hedge or a degraded obstacle zone within minutes — a check that would take a full morning on foot over several kilometres. The same pass records the condition of trackside drains and service access points, useful for racecourses that need to justify maintenance spending to their parent society or the local authority that owns the site.
For buildings (grandstands, stables, tack rooms), a thermal roof inspection before winter follows the same logic as our guide to drone roof inspection, with an identical benefit: avoiding scaffolding for a simple diagnosis.
No flying on race day
On race day, a racecourse hosts the public in its stands and on the lawns. EU Regulation 2019/947 bans any flight over a gathering of people in the open category, regardless of the drone's class — the same constraint that applies to a motor racing circuit or a stadium during an event (see our guide to motor racing circuits and karting). In practice, the vigour-mapping, rail-inspection and topographic-survey flights described here are scheduled on a track closed to the public: early morning, a day with no meeting, or during each discipline's off-season.
Prices observed in 2026
Ranges observed for a racecourse in France in 2026, excl. VAT:
| Service | Range (excl. VAT, 2026) |
| Multispectral vigour/moisture mapping of the track (full course) | €500 to €950 |
| RGB inspection of rails, hedges and obstacles | €350 to €700 |
| Topographic survey of levelling and drainage (comparative photogrammetry) | €450 to €900 |
These amounts cover the flight, image processing and delivery of the maps; they do not include turf maintenance work or rail repairs. For a racing society or a local authority that owns a racecourse in France, request a quote stating the discipline (flat, jump, trotting), the course length and the preferred date (outside race days) — our page on precision agriculture by drone covers the multispectral method across all types of vegetation cover.