How to Plan an Open Water Swim
Assessing conditions, choosing a route, and knowing when to adjust.
Once you’ve swum in open water a few times, the question changes.
It’s no longer “Can I do this?”
It becomes “How should I approach this particular swim?”
Planning isn’t about making things complicated. It’s about reducing friction — before you’re already in the water.
Start With the Conditions, Not the Distance
Distance is the easiest thing to measure and the least useful thing to decide first.
I look at:
Wind direction
Surface texture
Boat traffic
Water temperature
Cloud cover and visibility
A calm surface can change in twenty minutes. A light breeze on the way out can turn into steady resistance on the way back. Water that feels manageable at the start can feel different after forty minutes.
If the conditions feel marginal, I shorten the plan before I get in — not halfway through.
Choose a Route That Preserves Options
Beginner swims are often out-and-back along a shoreline. That’s fine.
As swims get longer, route choice matters more.
I prefer:
Swimming parallel to shore when possible
Loops instead of straight lines
Clear exit points every few hundred meters
The goal is optionality. If something feels off, I want an easy way to end the swim without creating a logistical problem.
A good route makes adaptation simple.
Match the Swim to the Day
Some days support longer efforts. Some don’t.
Sleep, stress, residual fatigue — they all matter more in open water than in a pool. There are fewer external cues and fewer natural breaks.
If the water feels heavier than expected, I shorten the swim early. If I feel unusually strong and the conditions support it, I might extend slightly — but only within the original safety boundaries.
The water sets the ceiling.
Decide Your Safety Margin Before You Get In
This isn’t about repeating beginner safety rules. It’s about clarity.
Before I swim, I’m clear on:
How visible I am
Whether conditions are building or settling
How long I intend to be in
What my exit plan is
If I hesitate on any of those, I simplify the swim.
Confidence in open water doesn’t come from ignoring risk. It comes from understanding it.
Give the Swim a Light Structure
Open water can easily become either aimless or overly ambitious.
I usually divide longer swims into segments:
A steady opening to settle
One or two controlled efforts
A final stretch focused on clean stroke and relaxed breathing
Nothing elaborate. Just enough structure to keep effort aligned with conditions.
Reassess Mid-Swim
Halfway through, I check in.
Has the wind shifted?
Am I warmer or colder than expected?
Is my breathing stable?
Is my stroke steady, or compensating?
If something feels subtly wrong, I shorten. I don’t negotiate with it.
There will be other swims.
Finish Clean
The goal isn’t to crawl out exhausted. It’s to exit steady.
Clear-headed.
Warm enough.
Satisfied with the effort.
Planning doesn’t eliminate unpredictability. It just reduces avoidable strain.
And over time, that’s what makes open water swimming sustainable — not just possible.