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100% free during beta

A running coach that knows you

AI-powered training plans, real-time coaching, and progress tracking - built around your body, your goals, your life.

Start training - it's free→

No credit card · No commitment · Cancel anytime

5K–42K
Any Distance
24/7
Available
AI
Powered Coach
Your Goal

What are you training for?

Whether it's your first 5K or a marathon PR, your plan is built for exactly where you are.

🏃
5K
Your first finish line
💪
10K
Build real endurance
⭐
Half Marathon
The big milestone
🏆
Marathon
Go the full distance
💚
Just Run
No race, just fitness
Why Pace Builder

Everything a personal coach does - without the price tag

Real coaching intelligence, not a static PDF plan.

🧠

A coach that learns you

Every run teaches it more about your strengths, limits, and rhythm. Advice gets sharper over time.

🔄

Plans that flex with life

Missed a day? Feeling tired? Your plan adapts automatically - no guilt, no wasted weeks.

📈

See what matters

Pace trends, heart rate zones, weekly load, streaks - the numbers that actually predict progress.

💬

Ask anything, anytime

"Should I run today?" "Why does my knee hurt after long runs?" Your coach is always a message away.

🎯

Race-day ready

Countdown to your goal race with a periodized plan - base, build, peak, taper. Science-backed.

🏋

Injury-aware training

Tell your coach about limitations. It adjusts intensity and flags risky volume spikes before they happen.

How It Works

From zero to race day in 4 steps

1

Tell us about yourself

Age, experience, goals, schedule - 2 minutes and your coach knows you.

2

Get your plan

A personalized 4-week training plan generated instantly by AI.

3

Run & log

Complete workouts, log your runs, and get instant feedback from your coach.

4

Watch yourself improve

Track progress week over week. New plan every 4 weeks as you level up.

Start your plan - free
Got a race on the calendar?

Register for your race, double your trial

Find a 2026 race in your city, sign up, upload your confirmation - and your 7-day trial becomes 14 days. Then train for THAT race with your AI coach.

Browse 2026 races→

No card needed. Cancel anytime.

1

Find your race

Browse 450+ AIMS-certified 2026 races across 115 countries. Filter by city, distance, or month.

2

Sign up with the organiser

Register on the official race site. Grab your confirmation email or PDF.

3

Upload proof to Pace Builder

Screenshot or PDF. Trial jumps from 7 to 14 days instantly. No card.

4

Train with your AI coach

14 free days of coaching, a 4-week plan built around your exact race date.

Social Proof

Real runners. Real results.

From first-timers to marathon chasers - hear how Pace Builder fits into busy lives.

“I used to collapse on the couch after work. Now I run 30K a week and I have more energy at 9 PM than I used to have at noon. The plan just fit into my calendar - I never had to think about it.”
DE
Daniel Eriksson
Product Manager, fintech
Completed first half marathon in 1:48
“Running became my therapy. Pace Builder didn't just give me a training plan - it gave me a daily anchor. On weeks I ran consistently, my focus in court was noticeably sharper.”
AK
Aylin Korkmaz
Corporate Lawyer
From 0 to 10K in 11 weeks
“I'd tried Garmin Coach and two paid apps before this. The difference? This one actually adjusted when life got messy. After a brutal sprint cycle at work, it pulled back my plan instead of making me feel like I failed.”
MC
Marcus Chen
Senior Software Engineer
3:28 marathon - 19 min PR
“Honestly, I started running to manage anxiety. I didn't expect to get fast. Four months in, I ran my first 10K under 50 minutes and I'm sleeping better than I have in years.”
SN
Sofia Nilsson
UX Lead at a design studio
Went from 3 to 5 runs per week
Pricing

One plan. Everything included.

No tiers, no upsells, no surprises.

Beta - Free
$0$19/mo

Free while we're in beta. Early users keep a lifetime discount.

  • ✓Unlimited AI coach conversations
  • ✓4-week personalized training plans
  • ✓Workout logging with AI feedback
  • ✓Progress analytics & PR tracking
  • ✓Streak tracking & achievement badges
  • ✓Works on phone, tablet, and desktop
Get started - it's free

No credit card required

FAQ

Questions? Answered.

How do I start running as a complete beginner?+
Pace Builder is built for beginners. Tell us your fitness level during onboarding and we'll create a personalized plan that starts from wherever you are - even if you've never run before. The AI adapts to your pace, schedule, and how you're feeling.
Is this really free? What's the catch?+
No catch - Pace Builder is 100% free during our beta period. No credit card, no hidden fees, no feature gates. When we launch paid plans, beta users will get a lifetime discount.
How is this different from other running apps like Strava or Nike Run Club?+
Most running apps track your runs but don't coach you. Pace Builder is an AI running coach that builds personalized training plans around your age, fitness, schedule, and heart rate zones. It adapts every week based on how you're actually performing - not a static PDF plan.
Can Pace Builder help me train for a 5K or marathon?+
Yes - from couch to 5K all the way to marathon training. Pick your goal distance during onboarding and the AI generates a periodized plan: base building, speed work, peak, and taper. It adjusts automatically if you miss days or need to change your schedule.
Do I need a smartwatch or running gear?+
No. Pace Builder works in any browser on any device - phone, tablet, or desktop. A smartwatch helps with heart rate data but it's completely optional. You can log runs manually and still get full AI coaching.
How does the AI coach help me stay motivated?+
Your AI coach sends daily workout reminders, celebrates your streaks, gives instant feedback after every run, and generates a weekly progress summary. Choose between data-driven coaching or encouragement-focused style - the coach adapts to what motivates you.

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Your goal. Your plan. Your coach.

Stop training alone. Get a coach that adapts to you - not the other way around.

Start training - it's free→

Join the beta · No credit card · 2 minutes to start