Ruck Up: How to Train Like a Mountain Hunter Without Leaving Your Treadmill

Ruck Up: How to Train Like a Mountain Hunter Without Leaving the Treadmill

There's a particular kind of suffering that every backcountry hunter knows intimately ?" the burn of a steep climb with a loaded pack, lungs heaving, legs screaming, and still miles to go before the real work begins. For elite wilderness hunter and outdoorsman Remi Warren, that suffering isn't something to be avoided. It's something to be trained for, deliberately and methodically, long before the season opens and the mountain demands its toll.

Warren's Mountain Training Ruck series distills years of backcountry experience into structured, accessible workouts designed to prepare hunters ?" and outdoor enthusiasts of all stripes ?" for the grueling physical reality of life in steep terrain. Level 1, known as The Day Pack workout, is where every serious mountain athlete should begin. And the beauty of it? You can do it on a treadmill, with nothing more than a loaded pack and a willingness to hurt a little.

Why Weighted Pack Training Is Non-Negotiable for Hunters

Most gym routines have nothing in common with what your body actually endures during a mountain hunt. Ellipticals, bench presses, and even standard trail runs fail to replicate the compounding fatigue of carrying a loaded pack over sustained elevation gain for hours ?" sometimes days ?" at a time. Warren's approach bridges that gap by engineering workouts around the specific physical demands of a day hunt.

The central tool is simple: a weighted rucksack. Warren recommends starting with 30 pounds ?" a realistic approximation of a loaded day hunting pack ?" though he's quick to acknowledge that beginners should ease in at 15 to 20 pounds before pushing heavier.

"I can't think of a single hunt where I don't have my pack on almost all day," Warren explains. "And that's the thing that throws most people off."

It's a straightforward observation with profound implications for training. The weight of a pack doesn't just tax your legs ?" it loads your shoulders, shifts your center of gravity, creates pressure points that intensify as fatigue accumulates, and demands a kind of whole-body endurance that conventional gym work rarely develops. Warren's workout is designed to simulate all of it.

Getting Started: The Warm-Up That Sets the Tone

Like any intelligent training protocol, the Day Pack workout begins with a gradual warm-up. The goal in these opening minutes isn't to punish ?" it's to prepare. Warren suggests starting at a brisk walking pace on a treadmill set to a gentle two or three percent incline, giving muscles, joints, and cardiovascular systems time to come online before the real climbing begins.

The target effort level during the warm-up is what coaches often call "conversational pace" ?" working hard enough to feel it, but not so hard that speech becomes impossible. It's a calibration point, a chance to settle into the rhythm of movement under load before the terrain gets serious.

"I like to move quick, get my heart rate up," Warren says, "because I might not be hiking as long as I would when I'm out in the field."

This compression of effort is key to the workout's philosophy. In the field, a hunter might spend eight to ten hours moving through terrain. On the treadmill, Warren replicates the physiological stress of that experience in a fraction of the time by dialing up intensity ?" steeper inclines, sustained speed, relentless forward momentum. The warm-up is the on-ramp to that intensity, and it shouldn't be rushed.

The Climb: Progressive Incline and the Art of Pushing Through

Once the body is warm and moving well, the workout shifts into its defining phase: a progressive incline climb that mirrors the unrelenting uphill terrain of a mountain hunt. Warren bumps the incline incrementally ?" one notch at a time ?" encouraging athletes to maintain their walking speed even as the grade steepens beneath them.

The pacing strategy is deliberate. Rather than spiking the incline immediately, the gradual increase gives muscles time to adapt while steadily building cardiovascular demand. By the midpoint of the workout, legs should be feeling the familiar heaviness of real mountain climbing, and that, Warren insists, is exactly the point.

"I want to bust up that heart rate. I want to feel it in my legs because we're just doing this for a short duration."

For those training on a treadmill, Warren pushes the incline toward its maximum setting in the final stages ?" what he calls the "full send" ?" maintaining speed for as long as possible before allowing a controlled slowdown. The message throughout is clear: slow down if you must, but never stop. Forward momentum, however modest, is what counts.

It's a mindset as much as a method. Mountain hunting doesn't offer the luxury of quitting halfway up a ridge because your legs feel heavy. Training teaches the body to keep moving when the mind starts negotiating an exit. Warren captures this spirit with characteristic directness:

"My body's saying, 'Dude, stop, this is hard.' My legs are feeling heavy. That's what I want ?" heavy feet and keep moving."

Mental Visualization: Hunting Season Starts in the Gym

One of the most distinctive elements of Warren's training philosophy is the role he assigns to mental imagery during the hardest moments of a workout. As the incline peaks and the effort becomes genuinely difficult, he actively encourages athletes to visualize their goal ?" whether that's a heavy-antlered bull elk, a giant mule deer, or a remote backcountry lake waiting to be explored.

"Think about that big bull, that giant mule deer, that backcountry lake ?" whatever you want to do. I want you to visualize it."

This isn't motivational filler. Sports psychology research consistently supports the use of mental imagery as a tool for sustaining effort during high-intensity physical work. For hunters, whose motivation is tied to a deeply specific and personal vision of success, the technique is particularly powerful. The mountain is months away, but in the gym, it can feel immediate ?" and that immediacy drives harder effort.

Warren himself is training for a sheep hunt when he films this workout, and the stakes feel real in his voice. Sheep hunting is widely considered the most physically demanding pursuit in North American big-game hunting, requiring weeks of preparation for terrain that punishes the unprepared with ruthless efficiency. His urgency is genuine, and it's contagious.

Cooldown and Recovery: The Discipline of Slowing Down

After the summit push, the workout transitions into a gradual cooldown ?" what Warren frames as a ridge walk toward a glassing point, easing the incline down while maintaining movement. The goal here is active recovery: keeping the body moving to flush metabolic byproducts from working muscles while allowing heart rate to descend toward a more sustainable zone.

Warren targets a heart rate around 130 beats per minute during this phase ?" still elevated enough to continue building aerobic capacity, but comfortably below the red-line intensity of the climb. He recommends using the cooldown to practice the kind of steady, rhythmic pace that defines long days in the field ?" a brisk walk that allows conversation without requiring a gasp between every sentence.

"I want to be able to hold a good conversation ?" not necessarily have to breathe between every word ?" and really build back up just that stamina of being able to recover."

Recovery fitness, often overlooked in training programs, is critical for mountain hunters. The ability to descend from a peak intensity effort and return to sustainable cruising pace quickly is what allows a hunter to cover miles over a full day without burning out before noon. The cooldown isn't optional ?" it's training for resilience.

Scaling the Workout: Meeting Yourself Where You Are

One of the most refreshing aspects of Warren's approach is its genuine accessibility. He consistently acknowledges that not everyone starting the Day Pack program is in peak physical condition, and he builds meaningful modifications into the workout structure rather than treating them as afterthoughts.

For beginners, reducing pack weight to 15 pounds and accepting a slower pace at maximum incline is not only acceptable ?" it's encouraged. The goal isn't to survive a single brutal session; it's to build a sustainable training habit that accumulates fitness over weeks and months. Warren specifically suggests that athletes who aren't ready to add significant weight can instead focus on repeating the workout circuit two or three times in a single session, with short breaks between rounds, as a way to build volume without overloading joints and connective tissue too quickly.

The progression from Level 1 to more advanced backcountry training platforms is clearly signposted throughout the workout, giving athletes a sense of trajectory ?" a direction to move in, and milestones to measure themselves against. Fitness, in Warren's framework, is a journey with a destination: the mountain, in the best possible shape to do the work that matters.

Building a Training Schedule: Consistency Over Intensity

A single workout, however well-designed, won't prepare anyone for a sheep hunt. Warren is explicit about the importance of regularity, encouraging athletes to establish a consistent training schedule and return to the program repeatedly as their fitness develops. The adaptations that matter most ?" cardiovascular efficiency, muscular endurance, the hardening of tendons and connective tissue under load ?" take weeks and months to develop, and they vanish quickly without maintenance.

Integrating weighted pack training into a broader fitness routine two to three times per week, supplemented by longer, lower-intensity hikes when possible, creates the kind of layered fitness that mountain hunting demands. Warren's workouts are designed to be the hard days ?" the sessions that push the body into adaptation ?" while recovery days allow those adaptations to consolidate.

"Get a regular schedule going and you'll be well on your way to being in mountain shape," Warren says simply.

It's advice that's easy to absorb and demanding to execute ?" which is precisely the nature of preparation for any serious mountain pursuit. The treadmill, the loaded pack, the burning legs and labored breathing: none of it is the destination. It's the price of admission to a much bigger adventure waiting somewhere above the treeline.

The Bigger Picture: Training as a Hunting Philosophy

What makes Remi Warren's Mountain Training Ruck series compelling isn't just the workout mechanics ?" it's the philosophy woven through every instruction and aside. For Warren, physical preparation for hunting isn't a chore or a necessary evil. It's an expression of respect: for the mountain, for the animals pursued there, and for the experience itself.

Hunters who arrive unprepared don't just suffer more. They make worse decisions under fatigue, push beyond safe limits when judgment is compromised, and often miss the moments they trained and traveled for because their bodies give out before the opportunity arrives. Physical readiness isn't separate from hunting success ?" it is hunting success, at least in part.

The Day Pack workout, with its deliberate progression, its emphasis on mental toughness, and its honest acknowledgment of discomfort as a feature rather than a bug, encapsulates that philosophy in about twenty minutes of treadmill time. Strap on a pack, find an incline, and keep moving. The mountain is waiting ?" and it doesn't care how ready you feel.