There is a moment in every obstacle course race when the course stops testing your speed and starts testing your willingness to suffer. That moment usually arrives the second you wrap your arms around a sandbag. Unlike a clean barbell or a neatly loaded sled, a sandbag fights you the entire way. It shifts, it sags, it slides out of your grip just when your lungs are screaming for air. The sandbag carry is where races are won and lost, and if you show up unprepared, it will absolutely humble you.
Why the Sandbag Is a Different Beast
If you have done a bucket carry before, you might think the sandbag carry is roughly the same challenge. It is not. A bucket has rigid sides, a handle, and a predictable center of gravity. A sandbag has none of those things. The sand inside shifts constantly, redistributing weight mid-stride and forcing your stabilizer muscles to work overtime just to keep the load from slipping. The fabric exterior offers limited grip, especially once it gets coated in mud and sweat. And the shape is awkward by design, too wide to wrap your hands around comfortably and too floppy to sit neatly on any part of your body.
This means the sandbag carry demands a completely different skill set. Bucket carries reward a steady, upright posture and a death grip on the handle. Sandbag carries reward adaptability, the ability to transition between positions, and the core strength to stabilize a load that never stops moving. Think of the bucket as a controlled grind and the sandbag as a wrestling match that happens to cover a few hundred meters of rough terrain.
Three Carry Positions and When to Use Each
The biggest mistake first-timers make is locking into a single carry position and refusing to switch. There are three main options, and knowing when to rotate between them is what separates a smooth carry from a painful death march.
The bear hug is the most common starting position. You wrap both arms around the bag, clasp your hands together, and pin it against your chest. This position offers maximum control and works well on flat ground or gentle inclines. The downside is that it compresses your diaphragm and makes breathing harder over time. If the carry is longer than a couple hundred meters, you will need to transition out of the bear hug before your breathing becomes a limiting factor.
The shoulder carry shifts the bag onto one shoulder, freeing up your breathing and redistributing the load through your skeleton rather than relying entirely on arm and grip strength. This position is excellent for longer carries and uphill sections where you need full lung capacity. The trade-off is less control over the bag, so it works best once you have some momentum and the terrain is predictable. Switch shoulders periodically to avoid overloading one side of your body.
The Zercher carry positions the bag in the crooks of your elbows with your forearms forming a shelf underneath it. This is a specialist position that works well for heavier bags on shorter distances. It takes serious bicep and forearm endurance, but it keeps the load tight to your center of mass and allows for better posture than the bear hug. If you have trained Zercher squats in the gym, this position will feel natural. If you have not, save it for race situations where the bear hug and shoulder carry are both failing you.
Gym Training That Actually Transfers
The best way to train for the sandbag carry is to train with an actual sandbag. If your gym has one, use it. If not, you can buy a durable training sandbag for the cost of a decent pair of OCR shoes, and it will be one of the best investments you make.
Sandbag cleans are the foundation. Pick the bag from the ground to your chest repeatedly, and you are training the exact movement pattern you will use at the start of every carry. Bear hug squats build the core compression strength and leg drive you need to keep moving under load. Load the bag against your chest, squat deep, and stand. Three to four sets of eight to twelve reps will build serious carry-specific endurance.
Farmer’s walks with heavy dumbbells or kettlebells train your grip and your ability to move under load without losing posture. Aim for distances of forty to sixty meters per set at a weight that challenges you by the end. Loaded hill climbs, whether with a sandbag, a weight vest, or a heavy backpack, are the most race-specific training you can do. Find a hill, load up, and walk. Then walk back down. Then do it again. There is no shortcut here, and the specificity of this training pays off enormously on race day.
Building the Mental Game
The sandbag carry is as much a mental obstacle as a physical one. The load feels manageable for the first fifty meters, uncomfortable by one hundred, and genuinely miserable by two hundred. Most people who drop the bag or slow to a crawl are not failing because their muscles gave out. They are failing because their brain told them to quit before their body actually needed to.
The best mental strategy is to break the carry into micro-segments. Do not think about the finish line. Think about the next landmark, the next tree, the next turn in the trail. Count steps in sets of twenty. Focus on your breathing rhythm rather than the burning in your arms. And remind yourself that every single person around you is suffering just as much. The carry does not get easier. You just get better at tolerating the discomfort.
Common Mistakes That Cost You Minutes
Going out too fast is the number one mistake. The sandbag carry is not a sprint. If you explode out of the pickup zone, you will burn through your grip and your energy reserves in the first third of the carry, and the remaining two-thirds will be a slow-motion disaster. Start at a pace you know you can sustain, and save any extra effort for the final push.
Bad posture is the second killer. Rounding your back under load puts enormous stress on your spine and makes breathing even harder. Keep your chest up, engage your core, and take slightly shorter strides than you think you need. Your lower back will thank you the next day.
Refusing to switch positions is the third mistake. There is no prize for carrying the bag in one position the entire way. When your arms start to fail in the bear hug, move to the shoulder. When one shoulder is cooked, switch to the other. Adaptability is not weakness. It is smart racing.
Race Day Strategy by Terrain
On flat carries, the bear hug is your default. It gives you the most control, and since flat terrain does not demand extra lung capacity, the compressed breathing is manageable. Keep a steady pace and focus on smooth, efficient movement.
On uphill carries, switch to the shoulder as early as possible. You need every bit of lung capacity to power up the incline, and the shoulder position frees your chest to breathe deeply. Shorten your stride, lean slightly forward, and drive with your legs. This is where loaded hill training in the gym pays its biggest dividends.
On downhill carries, slow down and prioritize control. The shifting weight of the sandbag combined with gravity and uneven footing creates a recipe for rolled ankles and face-first tumbles. The bear hug or Zercher positions offer the most stability on descents. Take deliberate steps, keep your center of gravity low, and resist the temptation to let gravity pull you into a jog.
The Bottom Line
The sandbag carry is not glamorous. There is no technique hack that makes it painless and no shortcut that replaces the hours of loaded training your body needs to adapt. But that is exactly why it matters. The sandbag carry rewards the people who put in the unglamorous work, who train with awkward, shifting loads, who build their mental tolerance for sustained discomfort, and who show up on race day with a plan for how to manage the grind. Train the positions, build the strength, respect the distance, and the sandbag carry becomes one of your biggest advantages on the course.