Is Altitude Sickness a Risk During Gorilla Trekking?

So, you’re thinking about gorilla trekking. Awesome. You’ve seen the photos, you’ve dreamed of that moment in the mist. But then someone goes, “Hey, it’s up in the mountains,” and a little voice in your head asks… wait, can I actually get altitude sickness from this?

Yeah, look. The honest answer is yes, you can. But for most people? It’s really not a big deal. Let me just walk you through it.

What even is altitude sickness?

Basically, it’s when your body gets a bit grumpy because there’s less oxygen in the air. You go higher, the air gets thinner, and sometimes your body just hasn’t caught up yet.

You might feel a bit of a headache. A little dizzy. Maybe a bit sick to your stomach. Or just… weirdly tired. That’s it, usually. And it almost always goes away if you just take a breather or head back down a bit.

How high are we actually talking?

In Uganda, particularly in renowned gorilla trekking destinations like Bwindi Impenetrable National Park, the altitude typically ranges from approximately 1,200 to 2,600 metres above sea level.

To put that into more familiar terms for those using imperial measurements, this equates to roughly 4,000 to 8,500 feet. This variation in elevation means that while some parts of the trek remain relatively low and lush, other sections can climb noticeably higher, contributing to both the physical challenge and the unique montane ecosystem.

In neighbouring Rwanda, specifically within the Volcanoes National Park—home to its own famous gorilla populations—the terrain is generally higher still.

Some of the park’s peaks, such as Mount Karisimbi, rise to as much as 4,500 metres (nearly 14,800 feet). However, it is important to note that most of the actual trekking to locate gorilla families takes place at considerably lower altitudes, often on the slopes rather than the summits. Even so, the base elevation for many trails is higher than in Bwindi, which adds a distinct character to the experience.

So, to be clear: this is absolutely not comparable to climbing Everest or even scaling a major high-altitude peak. You are not entering the “death zone” or needing supplemental oxygen. Nevertheless, the altitude is high enough that if you have just flown in directly from a location near sea level—say, a flat coastal city or a lowland region that is literally “as flat as a pancake”—

your body may notice the difference. You might find yourself breathing a little more heavily on steep sections, tiring more quickly than usual, or feeling mild effects like a slight headache or shortness of breath. For most healthy individuals,

these sensations remain mild and manageable, but they are worth acknowledging and preparing for with proper hydration, a slower pace, and ideally a day or two of acclimatisation before trekking.

And here’s the really annoying part…

It’s totally random. I wish I could tell you otherwise.

You can be super fit, run marathons, and feel dreadful. Meanwhile, someone’s uncle, who hasn’t exercised since the 90s, feels absolutely fine. Makes no sense, right? Fitness doesn’t really matter. Age doesn’t matter. It’s just how your particular body decides to behave on the day.

You are more likely to feel it if you’ve just come from sea level, if you’ve had it before, or if you go straight up without a rest day. Also, if you’re dehydrated, exhausted, or – and this is a big one – if you had a few too many drinks the night before.

But here’s the thing people get wrong…

Even if you don’t get altitude sickness? The trek is still hard. Like, properly hard.

Thin air. Steep muddy slopes. Thick jungle. Hours of uphill. You’re going to be out of breath. You’re going to be tired. That doesn’t mean you’re sick. It just means you’re doing something difficult. Big difference.

So what should you actually look out for?

Most people just feel:

• A bit of a headache

• More tired than usual

• Slightly dizzy now and then

• Winded going uphill

• Not that hungry

That’s normal. Annoying, but normal.

If things get really bad – like you can’t breathe even when you’re sitting down, or you feel confused, or you can’t walk straight – then yeah, get help fast. But honestly? That rarely happens on gorilla treks. It’s super rare. And your guides have seen it all before.

Okay, so how do you not feel like garbage?

Here’s the real-world advice. No nonsense.

Get there a day early if you can.
Even just one night at a lodge near the park helps more than you’d think. Just gives your body a minute to go, “Oh right, we’re doing this.”

Drink water like it’s your job.
Carry at least two litres on the trek. Dehydration just makes everything feel ten times worse.

Go easy on the alcohol the night before.
I know, I know. It’s tempting. Just save the celebratory drink for after you’ve seen the gorillas. In the future, you will be grateful.

Walk slowly. Like, embarrassingly slow.
Don’t try to keep up with the fast walkers. Your guides expect everyone to be at different levels. Slow and steady is how you actually enjoy it.

Eat breakfast. A real one.
Not just coffee and nerves. Your body needs fuel. Give it something proper.

And seriously – hire a porter.
Best money you will spend on the whole trip, I promise. They carry your bag, they pull you up the steep bits, they stop you from face-planting in the mud. Worth every single penny.

What about pills or health conditions?

Some people take Diamox. If you’ve had altitude sickness before or you’re really worried, just ask your doctor. But for most people doing gorilla trekking? You probably don’t need it.

And if you’ve got asthma or a heart thing or high blood pressure? Just have a quick chat with your doctor before you book. That doesn’t mean you can’t go – loads of people with health stuff do this every year. Just get some proper advice first.

So, honestly… is it safe?

Yeah. Absolutely. Thousands of people do this every single year, and they’re totally fine.

The guides and rangers know exactly what they’re doing. They watch everyone, they set a good pace, and they know how to help if someone’s struggling.

Most people finish the trek and think, “Wow, I’m absolutely knackered” – not “Wow, I got altitude sickness.”

Can you get altitude sickness? Yeah, sure. It’s possible.

But for the vast, vast majority of people? You’ll just feel tired. Maybe a little breathless. That’s it.

Show up a day early. Drink water. Walk slowly. Eat breakfast. Listen to your guide.

And then? You’ll be standing there in the quiet mist, watching a baby gorilla tumble around while his mum completely ignores him, and you won’t even remember why you were worried.

Worth it. Every single time.