01 · Beginners
You don't need to know how training works. Only that you want to run.
Three easy runs a week, nothing hard in the first two weeks, every session explained in two sentences.
How to start →
Now on the App Store · 7 days free
The running app that knows you inside out.
The running app that knows you inside out.
And gets a little better with every run.
Every run reviewed. Overload spotted early. Your training adapted to your body every day. From your first 5K to the finish line.
5.0 on the App Store
Garmin · COROS · Wahoo · Apple Watch
Your watch shows readiness. Strava shows kilometres. Your plan shows a calendar.
paceos turns that into your way to the goal.
For the runner you are right now
Wherever you start.
paceos starts there with you.
paceos reads your level from your data, not from a questionnaire.
02 · Regular runners
You already run. paceos makes sure it pays off.
Your week built around your life, the session on your watch, the run back in the plan.
How a week works →03 · Ambitious runners
You know threshold and load. paceos knows yours.
Readiness against your own baseline, key sessions that grow with you, load tolerance from your data.
The runner model →04 · Racing
Planned backwards from the starting gun.
Phases up to race day, recovery weeks, pacing and fueling on the day.
Marathon training plan →After every run
Not only your night.
Everything you run.
Every run reviewed
Pace, zones, load, efficiency, training effect. And what it means.
Progress on your own numbers
Threshold pace, zones, form and personal bests from your real runs. No table comparison.
Overload spotted early
Acute versus chronic load, two hard days, easy runs too fast. Before it tips, the plan gets more careful.
Learns how you tick
How long you need, how much you tolerate, what a short night costs you.
Your watch measures. paceos decides.
No gut feeling.
No chatbot.
One decision.
Every morning paceos weighs how recovered you are, what the last days cost you and what your plan has in store. Then it adjusts the session. With reasons, in one sentence.
Recovery needed
No fighting today. The hard stuff waits.
Moderate
A little less, but not softer.
Well recovered
Your plan, as intended.
Optimal
Good days come as an offer, not an obligation.
TodayModerate
Threshold 2x10 min
Volume reduced · was 3x10 min · 55 min
Decision
Your recovery is below your baseline, load over the last 48 hours is high. Today 2x10 instead of 3x10, intensity unchanged. Long run moves to Thursday.
Two short nights and Tuesday's hard session are still in your legs. Run the two blocks cleanly at 4:49 to 5:00 and you will have fresh legs on Thursday.
✓ DoneTo watch↺
One tap on ↺ restores the planned session.
A Tuesday with paceos
You don't have to decide anything.
Just run.
06:40
The night is evaluated
Short night, heart rate slightly up, recovery below your baseline.
06:41
paceos decides
3x10 minutes becomes 2x10, the long run moves to Thursday. Before you put the coffee on.
06:42
The coach explains
Why, with target pace and fresh legs on Thursday.
06:45
To the watch
One tap. The session is on your Garmin, with pace and heart-rate ranges.
17:30
Done
The run comes back, is compared with the plan, and you say in one tap how it felt.
Wed 06:30
The model learns
Did the decision work? Next time paceos decides a little more like your coach.
The training plan
Built like the pros.
Planned for your life.
Clear phases up to race day. Most of it stays easy.
Phase 1
Base
Volume and routine, easy.
Phase 2
Build
Threshold and long run grow.
Phase 3
Specific
Race pace for your distance.
Phase 4
Taper
Fresh to the start line.
Recovery week after every build phase
Plans around you, not the calendar
Every run flows back into the plan. A template does not know that. paceos learns it.
Your week, your days
You pick run days and long-run day. Strength and mobility are scheduled.
Protects you when needed
Report a niggle and the plan goes easy; after a break it brings you back gently.
How it works
Five steps
that close every day.
01 · Measure
Your watch, your night
Automatically, while you sleep.
02 · Understand
Your readiness
Against yourself, not the average.
03 · Decide
The decision
Reasoned, and one tap back.
04 · Execute
To the watch
You press start.
05 · Learn
Your runner model
A bit more your coach every day.
Your watch stays your watch
Garmin, COROS, Wahoo, Apple Watch.
The session lands where you already look.
paceos does not replace your watch. It uses it.
Workouts to your watch
The finished session with pace and heart-rate targets is on your wrist before you lace up.
Garmin · COROS · Wahoo · Apple Watch
Night and recovery
Sleep, HRV, resting heart rate and breathing rate arrive automatically while you sleep.
Garmin · COROS · Apple Health (Apple Watch)
Import your runs
Every run flows back into the plan and your runner model, whatever you recorded it with.
Polar · Zepp · Strava · all of the above
As of October 2026. Apple Watch receives structured workouts from iOS 17.
Your runner model
paceos knows you. Not the average.
From up to 120 days of your data. Example values:
Recovery
49 h
Reliable
How long you need after a long run.
Load tolerance
+34 %
Preliminary
How much more than usual you tolerate.
Sleep & performance
−3.3 %
Reliable
What a short night costs you.
Weekly volume
87 km
Reliable
Tolerated so far without a dip.
More than the plan
One subscription. Everything in.
Coach with memory
Ask anything. It knows your data and remembers what you tell it.
Race-day mode
Pacing, in-race fueling, carb loading beforehand.
Apple Watch and widgets
Decision and readiness on your wrist and lock screen.
Crew and Duel
Run with friends. Kilometres are shared, never heart rate or sleep.
In short: paceos is a running app for iPhone that guides you from your first run to race day. It builds your plan for 5K to marathon, reviews every run, measures progress against your own numbers, spots overload early and adjusts each session in the morning to sleep, recovery and load. Ready on Garmin, COROS, Wahoo or Apple Watch. paceos makes the decisions itself; a coach chat explains them. 7 days free, then €59.99 per year or €1.99 per week.
Frequently asked
Short answers.
Who is paceos for?
Runners with an iPhone, from beginner to marathon. paceos detects your level from your data: under two runs a week you start with three easy sessions, structured runners get threshold, intervals and long runs.
Which watches work?
Workouts to Garmin, COROS, Wahoo and Apple Watch. Sleep and recovery from Garmin, COROS and Apple Health. Import from Polar, Zepp and Strava. As of October 2026.
How much does paceos cost?
7 days free, no payment details. Then €59.99 per year or €1.99 per week, cancel any time. Every feature in both plans.
How is paceos different from other running apps?
Most show data or hand you a plan. paceos connects both into a daily decision: every run reviewed, progress on your numbers, overload spotted early, today's session adjusted. With reasons, on any watch, for every level.
Do I need a running watch?
For the daily decision, yes, because paceos needs sleep, HRV and resting heart rate. Apple Watch, Garmin or COROS is enough.
What happens to my health data?
Used only for your training, never sold, never for advertising. No ad tracking. Everything is in the privacy policy.
Your watch already measures.
Let paceos decide.
Try it free for 7 days, no payment details needed. Then €59.99 per year or €1.99 per week. Cancel anytime.
For iPhone running iOS 15.1 or later, with an Apple Watch app. All values on this page are examples. paceos does not replace medical advice. If you are in pain, ill or unsure, your body and your doctor decide.