For who
For experienced swimmers training in the pool for a 3K swim. Ideal for building stamina, pace control, and confidence—whether racing in the pool or open water.
3K Challenge
Endurance • Open Water • 3K
37
Workouts
3000
Avg. Meters
52
Avg. Mins
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DuoSwimPlan blueprint
Triathlon & Open Water
3K Challenge
Endurance · Open Water · 3K
- Workouts
- 37
- Avg. metres
- 3,000
- Avg. mins
- 52
The shape of your trainingDistance / swim
First swim
3K Foundations
2,400 m 42 min
Mid-plan
Aerobic Progression
3,200 m 56 min
Final swim
Race The 3K
4,000 m 70 min
SYNCS WITH:
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WATCHWATCHWATCHTraining focus
Structured workouts designed to improve long-distance pacing, aerobic stamina, and mental focus.
What to expect
Progressive workouts blending endurance, threshold sets, and open water skills like sighting and pacing. Build fitness, sharpen technique, and peak for a confident 3K swim.
Equipment you need
You can adjust the equipment to suit your preferences and available gear.
How to get started
Download DuoSwim, start your first workout, and build momentum this week.
Step 1
Download the app
Download DuoSwim and log in to unlock your plan and workout guidance.
Step 2
Choose your plan
Start your recommended plan or choose the one that fits your goal and schedule.
Step 3
Start your workouts
Follow your workouts with clear pacing, intervals, and progress tracking built in.
Step 4
Track your workouts
Review your completed workouts and progress in DuoSwim.
Workout distance progression
Distances from the first 12 workouts in this plan. See the full workout list below.
2400m1
2600m2
2600m3
2600m4
2800m5
2000m6
3000m7
3000m8
2800m9
3000m10
2800m11
2500m12
Workout structure
Preview the structure of this plan with workout names, estimated duration, and distance.
3K Foundations
42 min · 2400m
Aerobic Pyramid
46 min · 2600m
Build To Burn
46 min · 2600m
Double Descend
46 min · 2600m
Surge & Settle
49 min · 2800m
View all workouts
Test Set I
35 min · 2000m
Drop Ladder
53 min · 3000m
Sight & Strength
53 min · 3000m
Split Control
49 min · 2800m
Endure & Ignite
53 min · 3000m
Kick, Pull & Swim
49 min · 2800m
Test Set II
44 min · 2500m
Glide & Go
51 min · 2900m
Descend & Burn
49 min · 2800m
Threshold Builder
51 min · 2900m
Sightline Endurance
53 min · 3000m
Gear Shift
53 min · 3000m
Long Haul I
53 min · 3000m
Aerobic Progression
56 min · 3200m
Best Avg Challenge I
53 min · 3000m
Smooth Strength
56 min · 3200m
Pace Ladder
54 min · 3100m
Efficiency Engine
51 min · 2900m
Test Set III
53 min · 3000m
Split Shift
60 min · 3400m
Stroke To Threshold
60 min · 3400m
Rhythm & Redline
53 min · 3000m
Endurance Flow
53 min · 3000m
Dual Descend
60 min · 3400m
Test Set IV
53 min · 3000m
Cruise & Crush
53 min · 3000m
Long Haul II
70 min · 4000m
Speed & Endure
56 min · 3200m
Best Avg Challenge II
51 min · 2900m
Stroke Tune-Up
49 min · 2800m
Taper & Prime
35 min · 2000m
Race The 3K
70 min · 4000m
Dryland
We recommend Strength Gains to pair with this plan — building stamina and strength under load to support your 3K swim goal.
Explore 3K Challenge in DuoSwim.
First week free. Cancel anytime.
FAQ: All you need to know about 3K Challenge
Answers to common questions about this plan, equipment, pacing, and getting started.
For experienced swimmers training in the pool for a 3K swim. Ideal for building stamina, pace control, and confidence—whether racing in the pool or open water.
Take your swimming to the next level
A clear, structured path that helps you train with confidence and keep progressing week by week.
First week free. Cancel anytime.