Adaptive training that evolves with your fitness and guides you to your next personal best.
Train smarter. Run faster.
A smarter way to improve your 5k.
Whether you're chasing Sub-30, Sub-25 or Sub-20, Sub20 adapts every workout to your current fitness level and gives you a clear path to your next personal best.
Here's what makes it different
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Every session is personalised
The target pace for every interval, threshold, tempo and easy run is personalised to you.
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Progress every 4 weeks
Regular benchmark runs update your training as you get faster.
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Unlock your next level
Testing week: beat your benchmark time and unlock the next stage of training to keep progressing towards your goal.
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Always know what's next
No guessing. No random sessions. Just a structured path to becoming a faster runner.
Train with purpose. Progress with proof.
Step 4 of 4
Save your personalised plan.
Create your account to save your progress, training plan and unlocked levels.
Enter your recent 5k time and we'll instantly calculate your training paces and place you at the right level.
25:00
Current 5K time
19:0035:00+
Training Paces Preview
Your starting level
Step 3 of 4
Your personalised plan is ready.
Current 5K
25:00
Starting Level
Level 3 – Threshold Development
Next milestone
🎯 Sub-24:00
Training Paces Preview
12-week programme ready ✅
Benchmark tests included ✅
Training automatically adapts as you improve ✅
Everything is ready. Let's save your plan.
Step 2 of 4
Here's how you'll improve.
Your training is built around short, measurable progress.
Every 4 weeks
🏁 Complete a benchmark 5K test.
Hit your target
📈 Your training paces automatically update.
Unlock the next level
🔒 Earn your place in the next stage of training.
Keep progressing
🏆 Repeat the process until you reach your goal.
Progress isn't guessed. It's earned.
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Start your journey today.
Your personalised training journey is ready.
Adaptive coaching that evolves as you get faster.
Start your 30-day free trial.
⚡ Sub20 Monthly
£14.99/mo
after your 30-day free trial
Included
✅Personalised training system
✅Adaptive training that updates as you improve
✅Benchmark tests every 4 weeks
✅Unlock levels as you get faster
✅Track every run and milestone
Card Details
Cancel anytime before your trial ends and you won't be charged. By subscribing you agree to our Terms.
Payment of £14.99/month will be charged to your Apple ID account at the end of the 30-day free trial. Subscription automatically renews unless cancelled at least 24 hours before the end of the current period. Manage or cancel your subscription in your Apple ID Account Settings. By subscribing you agree to our Terms.
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You're in!
Your account is ready and your 30-day free trial has started. Time to start training.