8 Things That Surprised Me the Most About the Rim to Rim Hike

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8 Things That Surprised Me the Most About the Rim to Rim Hike

Before that first Rim to Rim in the Grand Canyon years ago, I fully expected several things:

I expected it to be challenging.

I expected the distance.

I expected the elevation gain.

I expected sore legs at the end of a long day.

What I didn’t expect were all the things that surprised me along the way. Some were incredible. Some were humbling. And some completely changed how I think about long distance hiking, especially in an environment like the Grand Canyon. It’s an environment that’s nearly impossible to fully replicate anywhere else, for training purposes.

If you’re preparing for your first Rim to Rim hike, here are the things that surprised me most, and continue to surprise me and challenge me!

Disclosure: Below are some affiliate links-these are all products I highly recommend. I won’t make any recommendations on this page that I haven’t tested or personally used! Enjoy this guide to the Grand Canyon Rim to Rim hike!

1. The Canyon Feels Much Bigger in Person

This probably isn’t a huge surprise to most, but photos absolutely do not prepare you for the scale of the Grand Canyon. Even standing on the rim, it still probably won’t fully register how massive it was. This can be misleading, as you’ll soon find once you start the descent.

What surprised me most:

The canyon keeps unfolding layer after layer as you descend. There’s stunning diversity and variety.
Distances are visually deceiving.
Landmarks that look “close” are often hours away – just wait till you’re hiking out!

The canyon has a way of making you feel very small—in both a humbling and awe-inspiring way.

2. The Downhill Was Harder Than Expected

Like many first timers on a Rim to Rim hike, I thought: “The downhill part should be easier.” While this is true for many, it’s just as equally untrue for many. You can’t afford to make an assumption until you’ve experienced the descent in the Grand Canyon. When you’re planning your timeframe and logistics, don’t assume you’ll fly through the downhill. In fact, in my experience coaching and consulting with hikers on Rim to Rims, the most injuries occur on the downhills.

Expect the descent to test your:

Quads
Knees
Feet

It’s very common for your legs to be fatigued by the time you reach the canyon floor – and that’s before you even climb out! That was one of the biggest surprises of that entire first hike. One reason it’s important to train for the downhills as well as the uphills, and incorporate lots of slow and controlled strength training movements. My Complete 16 week Rim to Rim Training Plan and 1st Timers Guide to Hiking Rim to Rim in One Day both address specific training components that target the downhills.

3. The Heat Hits Like a Wall

The temperature difference between the rim and the inner canyon shocked me. While the rim may feel breezy and comfortable, the bottom of the canyon, especially in walled in portions of “the BOX”, or the fully exposed portions of “the Frying Pan”, can be lethally hot. The canyon floor can easily be 20 or 30 degrees hotter than the top, coupled with exposure and lack of shade.

Starting early in cool air made it easy to forget or underestimate what was coming later.

At the bottom, expect:

The air to feel much heavier
The rocks will radiate heat
Shade becomes hard to find

The inner canyon heat is no joke. It’s quickly evident why so many hikers struggle with dehydration and heat exhaustion here. And proves exactly why having a tested and proven fueling and hydration plan is just as critical as the physical training.

4. The Climb Out Felt Endless

No matter which direction you hike, the final climb out is tough. What surprised me most wasn’t just the physical difficulty—it was how mentally draining it became. The switchbacks seemed endless.

The rim looked close but never arrived
My pace slowed dramatically (this is normal for just about everyone)
Every break became more tempting

The climb out reinforces that endurance hiking is as mental as physical. No matter how hard you train in advance.

5. My Appetite Changed

Normally after hard workouts, I’m hungry. But during a Rim to Rim? It’s funny how you can not feel hungry at all on a Rim to Rim, or things that used to sound appealing suddenly don’t. It’s one reason why fueling has to be tested prior, and implemented consistently and intentionally on a Rim to Rim. Train to know what sounds good on mile 18 of a 20 mile hike.

The heat and effort make eating feel difficult at times, even though calories are desperately needed.

I learned quickly:

Small snacks work better than big meals
Fuel consistently with the right fuels, even if you don’t feel like eating
Salty foods are lifesavers
You need to eat before you feel depleted
Bring morale boosting foods like candy or fresh fruit
Bring variety to break things up, like fresh fruit or crunchy veggies
Train with what you plan to bring
Know what sounds appealing after a long workout

6. How Green the Canyon Is

I anticipated the red rock. And even some of the changing topography as you descend. But what surprised me most was just how green the corridor trails are, with streams running in many areas, and patchy green oases popping up where you might not expect them.

Take advantage of the water and greenery at:

Bright Angel Campground and Bright Angel Creek
Havasupai Gardens Campground
Manzanita Rest Area
Ribbon Falls
along the bottom of “the BOX”

Always bring a water filter as a backup, because there are water sources along the way should you need them. Check out my full Rim to Rim Gear Packing Checklist for filter recommendations.

7. Hiking Rim to Rim Is an Emotional High

I expected a physical challenge. But the emotional roller coaster can be a surprise.

There were moments of:

Excitement
Doubt
Gratitude
Frustration
Accomplishment

The canyon has a way of stripping everything down to simple things:

Water
Fuel
Movement
Endurance
Persistence

By the end, crossing the canyon felt like more than just finishing a hike. The groups cheering at the top also help!

8. The Experience Stayed With Me Long After

I’ve done a lot of big hikes (like the 50 U.S. state high points), but the Rim to Rim is one of those hikes that stays with you for a long time. And most likely will draw you back. There are a lot of Rim to Rim repeaters for a reason.

Lessons I’d Pass Along to Rim to Rim First Timers

If you’re preparing for your first Rim to Rim crossing:

Train specifically for:

Downhill hiking (natural trail descents, walking backwards, slow and controlled strength training)
Heat (responsibly and safely)
Long climbs (with as much elevation gain as possible)
Time on feet (both with and without elevation gain is beneficial)

Don’t underestimate:

Hydration and electrolytes
A fueling plan
The mental challenge
The heat

And most importantly:

Remember to soak all of it in, the good and the bad. Because despite the short term suffering, the Grand Canyon is one of the most incredible places you’ll ever hike. And not many visitors can say they’ve seen it from Rim to Rim.

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8 Things That Surprised Me the Most About the Rim to Rim Hike

8 Things That Surprised Me the Most About the Rim to Rim Hike