One of the biggest mistakes I see tactical athletes, GORUCK athletes, and future BUD/S candidates make is this:
They think more weight equals better training.
So they throw on:
a 40-pound weight vest
a heavy ruck
ankle weights
boots
chains
whatever they can find
…and then go run for miles on pavement.
Sounds hardcore.
But here is the truth:
That kind of training can wreck your knees, hips, shins, ankles, cartilage, and lower back.
Fast.
I want to help you avoid years of unnecessary pain and injury before it happens.
The Problem With Running Heavy
Your body is built to absorb force.
But when you add heavy external load while running, the impact forces increase dramatically.
Every foot strike sends stress through:
ankles
knees
hips
spine
connective tissue
A little bit may be manageable.
Too much over time becomes cumulative damage.
The issue is not toughness.
The issue is durability.
I have seen athletes destroy themselves trying to look “hardcore” online instead of training smart for the long game.
The goal is not to survive one workout.
The goal is to stay healthy enough to train for years.
As we discussed in earlier SGPT training articles, heavy vest running and overloaded ruck running can increase injury risk significantly if progression is rushed.
What Happened at BUD/S
A lot of people assume Navy SEAL training is nonstop running with heavy gear.
Not true.
At BUD/S, most running volume is done:
in soft sand
with moderate loads
at controlled pacing
with carefully built progression
Candidates who arrive already injured from “hero workouts” usually do not last long.
One of the biggest mistakes I made before BUD/S the first time was training incorrectly. I lifted too much in bodybuilding gyms and did not build a proper endurance base.
The second time around, I trained smarter:
longer aerobic runs with good form
bodyweight workouts
moderate rucking
sandbag carries
trail running
biking for endurance
That approach built durability instead of breaking my body down.
The Difference Between Rucking and Running
This is important.
Rucking = GOOD
Heavy Running = DANGEROUS
Rucking teaches:
load carriage
posture
endurance
mental toughness
durability
But rucking should mostly be:
walking
hiking
power hiking hills
controlled movement
Not sprinting 5 miles on asphalt with 40 pounds.
At SGPT we strongly recommend:
moderate loads
gradual progression
hills and trails
shorter distances early on
That keeps your joints healthier for the long haul.
The Worst Things You Can Do
1. Long Runs With Heavy Weight Vests
Running 3–6 miles repeatedly with a heavy vest is asking for trouble.
It may feel productive now.
But over time it can lead to:
shin splints
tendonitis
stress fractures
knee pain
hip problems
Especially on pavement.
Even ultrarunning coaches quoted on SGPT warned that weight vests increase injury risk and should be used cautiously and progressively.
- Running in Boots Too Early
This is another major mistake.
Boots change your mechanics:
heavier impact
altered stride
more shin stress
less cushioning
Most candidates should build a strong running base in quality running shoes first.
Then slowly introduce short boot runs later.
Not the other way around.
As discussed in our updated BUD/S prep articles, many overuse injuries come from candidates trying to “look tactical” before building real durability.
- Doing Too Much Too Fast
This destroys more athletes than almost anything else.
You get motivated.
You watch videos.
You buy gear.
Then suddenly:
50-mile weeks
heavy rucks
Murph every weekend
no recovery
Boom.
Injury.
The body adapts slowly.
Warriors train consistently—not recklessly.
What You SHOULD Do Instead
Build an Aerobic Base
Most athletes need:
easy runs
trail running
zone 2 cardio
biking
rowing
swimming
before adding heavy loading.
Your engine comes first.
Use Sandbags Instead
Want functional strength?
Use:
sandbag carries
bear hug carries
sled drags
tire drags
farmer carries
These build tactical durability without the repetitive joint pounding of heavy running.
I would rather see an athlete drag a sled for a mile than run 5 miles in a 50-pound vest.
Progress Slowly
A good rule:
increase weight slowly
increase distance slowly
never spike volume suddenly
Your tendons and connective tissue adapt slower than your lungs and muscles.
To quote Ian Sharman (Ultrarunning coach)
“There’s definitely a slightly higher risk of injury if a weight vest is used for running, so a very gradual progression of weight is best. Personally I don’t run with a weight vest, just walk or power-hike. To get similar benefits when running I use an hydration pack which fits better, bounces less and only has a small increase in weight compared to running without it.”
That is why people feel “fit” right before they get injured.
Tactical Athletes Need Longevity
This is something many younger athletes miss.
Your goal is not to train hard for 30 days.
Your goal is to still be:
strong
capable
mobile
durable
at age 50, 60, and beyond.
I still train today because I learned to train smarter.
Many athletes who constantly beat themselves up with ego training eventually disappear from the game.
Their joints cannot take it anymore.
Smarter Tactical Training Options
Instead of heavy weighted running, focus on:
trail running
hill sprints
moderate rucking
sandbag work
swimming
rowing
biking
bodyweight circuits
These methods build:
endurance
toughness
work capacity
resilience
without destroying your body.
WORKOUT #1
Warm-Up
10 minute easy jog
mobility work
hip openers
Main Workout
3 Rounds:
800m run
sandbag carry 200m
20 pushups
20 air squats
sled drag 100m
Finisher
30 minute moderate ruck walk
This builds real-world durability without excessive impact.
Final Thoughts
Hard training is good.
Stupid training is not.
There is a difference between:
training like a warrior
and
breaking yourself for social media points
The best tactical athletes train with discipline and patience.
Build your engine.
Strengthen your joints.
Train for the long haul.
Because the strongest athlete is not the one who trains hardest for one month.
It is the one who is still standing years later.
Train smart.
Stay durable.
RELATED ARTICLES:
5k Run Tips
GORUCK Event Training Tips