If there's one question that stops beginners before they even start, it's this one — and unfortunately, the internet's answer is usually "as heavy as you can handle," which is close to the worst advice possible for someone on their first ruck.
The Short Answer
A commonly used reference point is roughly 10% of your body weight for a first session. So if you weigh 160lb, that's about 16lb — around the weight of a loaded laptop bag, a case of water bottles, or a couple of large textbooks.
Two important caveats on that number:
1. It's a reference point, not a rule. If you're substantially less fit, returning from injury, or simply unsure, starting meaningfully below that figure — even as low as 5–10lb — is a completely legitimate choice. There's no prize for starting heavier.
2. It applies to your first few sessions, not your permanent starting point. The number that matters more than any specific weight is how the session actually felt afterward.
Why "As Heavy As You Can Handle" Is Bad Advice
The single most common beginner error in rucking is starting with too much weight, and it accounts for a large share of the injuries reported anecdotally, usually within the very first week. Here's why it happens: an unloaded 20-minute walk feels easy, so a loaded 20-minute walk with 30 or 40lb feels like it should be manageable too. But your shoulders, upper back, hip flexors, and feet haven't adapted to carrying that load yet — even if your cardiovascular system can keep up, your connective tissue and stabilizing muscles are playing catch-up, and that's where problems show up.
How to Know If You Started Too Heavy
A few honest signals to watch for after your first session:
● Sharp or localized pain (as opposed to general muscle fatigue) in your shoulders, lower back, hips, or feet
● Numbness or tingling in your hands or fingers during the walk (usually a sign the pack's straps are compressing something they shouldn't, often made worse by excess weight)
● Noticeably altered posture or gait by the end of the session — leaning forward from the hips, or a shortened stride to compensate for the load
None of these are catastrophic on their own, but they're your body telling you to dial the weight back for your next session, not push through.
When to Add Weight
The general rule worth committing to memory: change one variable at a time. That means once your current weight has felt comfortable for at least a full week, with no joint discomfort during that time, you can consider adding more — never add weight and distance and pace all in the same week.
A reasonable week-by-week shape for a beginner looks something like:
● Week 1: Learn the movement at a light, comfortable weight, short duration
● Week 2: Same weight, slightly longer duration, to build a base
● Week 3: Introduce a modest weight increase, or a hill — not both
● Week 4: Your longest session yet, then an honest check-in on how you're progressing
What to Actually Use for Weight
You genuinely don't need a dedicated ruck plate to start:
● Books, in a padded section of your bag — cheap, adjustable, and you probably already own enough
● A bag of rice or sand, double-bagged — inexpensive and easy to adjust in small increments
● A weighted vest you already own, if you have one — distributes load differently than a backpack, which some people prefer
● A dedicated ruck plate, once you're rucking consistently and want something that won't shift inside the pack
The equipment matters far less than the progression. A $15 bag of rice, added gradually and sensibly, will get you further than an expensive rucking-specific setup used carelessly.
Read next: Rucking vs. Running: Which Is Better for Beginners?
Take the Guesswork Out Completely
- If you'd rather follow a plan than work this out session by session, The Complete Rucking Blueprint includes a full weight-progression decision tree, a 4-week starter program with the exact weight and duration for every session, and a printable tracker so you always know exactly when — and whether — to add more.