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Behaviour problems · 3 September 2026

Horse Won’t Load Into a Trailer: Causes and Solutions

A horse that won’t load into a trailer is almost never being stubborn. It is afraid of a narrow space that moves and offers no escape. The solution is not to pull harder, but to take a step back: first communication in an open space, then the ramp in small steps, and only then the trailer as a place to rest.

In this article I explain the causes, the mistakes I see most often and the three steps I used to load a horse that had refused to enter a trailer for six months.

Why a horse won’t load into a trailer

A horse escapes danger by running away, and a trailer takes away that very option. The reason for the resistance determines where you start, so it is worth identifying before the first attempt.

  • Instinct. A narrow, enclosed space with one exit and a floor that rattles and moves.
  • A bad experience. Sudden braking, a sharp turn, a fall or forced loading. A horse remembers these experiences for a long time.
  • Missing foundations. A horse that does not move forward on a light cue in an open space will not move towards the ramp either.
  • Human tension. Rushing, a deadline and an audience. Your horse reads your body before it reads the lead rope.
  • Pain or discomfort. If a horse that previously loaded calmly suddenly refuses, a veterinarian should examine it first.

The most common loading mistakes

Most loading problems are not created by the horse, but by the way we try to get it inside. These are the five mistakes I see most often.

  1. Pulling the horse inside. A lead rope pulling forward gives the horse something to resist. I send the horse forward through body language, standing beside it.
  2. Standing on the ramp and looking into its eyes. Someone standing in front of the horse and looking directly into its eyes is saying “stop” with their body. You unintentionally block the entrance you are trying to guide it through.
  3. Pressure that never releases. A horse learns from the release. If it makes even the smallest movement towards the ramp and the pressure stays the same, it receives no feedback that this was the right response.
  4. Closing the ramp as soon as the horse enters. The trailer becomes a trap rather than a safe place, so next time it will not enter.
  5. Practising on the day of travel. A deadline turns training into a struggle, and a struggle increases fear.

A practical example: six months without loading

A seven-year-old warmblood gelding stopped entering the trailer after sudden braking during transport. His owner had been unable to load him for six months, and every attempt ended in panic and rearing.

When I arrived, the horse planted his feet five metres from the trailer. His head was high, his breathing was rapid and he escaped sideways. His owner stood on the ramp in front of him, pulling the lead rope with all his strength and looking straight into his eyes. Behind the horse, helpers pushed with brooms.

Everyone wanted to help, but the horse was under pressure from both front and behind, with no direction in which he could find relief. We worked through it in two visits, using three steps.

The three steps I use to work on loading

I move to the next step only when the horse shows it is ready, not when time runs out.

1. Away from the trailer: communication on level ground

First we moved away from the trailer. On level ground we established basic communication and respect for personal space: moving forwards, backwards and sideways on a light cue.

Ready to progress: the horse calmly follows my focus, lowers its head and chews.

2. The ramp: approach and retreat

I asked for just one step towards the ramp. As soon as he took it, I released the pressure and asked him to step back. Retreat is the reward, because the horse learns that approaching the ramp does not mean being trapped.

Ready to progress: the horse puts its front feet on the ramp on its own, without signs of stress.

3. The trailer as a place to rest

The horse enters without rushing and without the ramp being closed. Outside I ask for focus and work; inside the trailer it gets a break and relaxation. The trailer becomes a place where things are easier than outside.

Ready to finish: the horse enters calmly, stands with a relaxed body and leaves without panic on the requested cue. Calm unloading is just as important as calm loading.

How long it takes and when to seek help

We resolved this horse’s loading problem in two visits. The first session lasted 60 minutes and ended with calm loading and unloading. During the second, we reinforced what he had learned, calmly closed the partition and ramp, and took a short test drive.

I do not promise the same result for every horse. The time needed depends on its past experiences and how well the groundwork foundations are established.

Between sessions, practise when you are not travelling anywhere. Leave the trailer open near food and let your horse investigate it on its own.

  • Call a veterinarian if a horse that previously loaded suddenly refuses, or if you notice pain, stiffness or loss of balance.
  • Call a trainer if your horse rears or throws itself sideways. Rearing on a ramp is dangerous for both horses and people, and this is not a situation to tackle on your own.

Frequently asked questions

Can I lure my horse into the trailer with food?

Food helps a horse explore an open trailer on its own when there is no pressure. I do not use it as my main tool, because the horse then enters for the bucket rather than because it feels safe. The reward a horse understands best is the release of pressure and calm.

How often should I practise loading?

Keep sessions short and frequent, on days when you are not travelling. Finish while your horse is still calm, even if that means just two feet on the ramp.

What if my horse goes in but immediately rushes out?

Do not close the ramp or try to hold it inside. Take a step back: ask for a shorter stay and an exit on your cue, then gradually increase the time spent inside.

Need help with loading?

If your horse won’t enter a trailer, send me a training enquiry. I come to you in Zagreb and the surrounding area, and further afield by arrangement.

By Tomislav Marčenić, horse trainer — Zagreb, Croatia and the region.