Your personal science coach

Know every day
whether your training is right.

No more guessing "Am I running enough? Should I rest today?" Paceriz reads every real workout you do and helps you progress steadily — keeping you a step ahead of injury, with the reason behind every call.

Delete it if you don't like it · No credit card

Personal coach Daily verdict on your training
Plan to your watch One tap to Garmin, then run
Safety floor Stops you before injury
Real conversation excerpt ‧ De-identified

🙋 I just finished a 14K LSD. How did I do?

Your pace today was around 6:10/km with an average heart rate of 158. Cardiac drift reached 38% — far above your usual −3%. That means even though it felt easy, your body was working significantly harder over the long distance. Tomorrow, keep it to 9K easy by feel — don't chase pace.

↳ Sourced from your data: cardiac drift 38% vs usual −3% ‧ pace 6:10/km ‧ HR 158

設定目標賽事 每週訓練回顧 Paceriz App 週課表總覽

Behind every plan: a complete system of training science

From world-class methodology to dimension-by-dimension analysis — checking your training every day.

Real training science — not AI making it up on the fly

Polarized, Norwegian double-threshold, Hansons — selected automatically for your goal, with paces computed via VDOT and your season periodized. Complete one benchmark time-trial and your fitness recalculates automatically — your plan gets stronger as you do.

Polarized · Norwegian double-threshold · Hansons · VDOT fitness · Periodization · Benchmark auto-calibration · Supporting-race auto-adjust

Makes you stronger — and keeps you from getting hurt

Multiple safeguards run at once: ACWR flags dangerous spikes, weekly mileage increases are capped, pace auto-adjusts for heat and humidity, and taper kicks in before your race. Its job is to get you to the start line intact — not to run you into the ground.

ACWR load protection · Mileage ramp limits · Heat-adjusted pace · Pre-race smart taper

Every day: whether your training was right — and why

Intensity, pace, mileage, recovery — each dimension is assessed for today's session, and it tells you why. Down to details like cardiac drift.

Dimension-by-dimension analysis · Daily check on your training · Cardiac drift tracking

Not a plan-and-leave. We run the whole loop with you.

Read you → assess → schedule → send to watch → you run → weekly review → auto-recalibrate. Every week knows you better than the last.

No one else has connected this entire loop
1
📲

Read your state

Auto-sync every run

2
🗓️

Assess & schedule

Sets pace & heart rate

New 3

Send to watch

Head out and run

4
🏃

You run

Just focus on running

5
📈

Review & recalibrate

Next week adjusts

↺  This loop repeats every week — it knows you better each turn

Others hand you a plan and stop.
Paceriz loops all the way back to your data — and that loop is where you get stronger.

Your personal AI coach

Got a question? Just ask Rizo

Ask in plain words — "What's my threshold pace?" "Did I train right this week?" "I'm wiped, can tomorrow be a rest day?" Rizo reads your actual plan and runs, and answers with your own numbers — never "go check the app yourself."

Want to change your plan? One sentence does it. Rizo shows you the proposal first, and nothing changes until you say yes — it never edits on its own. When you're about to overdo it, it hits the brakes first. An honest coach, not a cheerleader.

Answers with your data Change your plan in a sentence Only applies when you confirm Hits the brakes for you

Real conversation excerpt · De-identified

🙋 I just finished a 14K LSD. How did I do?
Your pace today was about 6:10/km with an average heart rate of 158. Cardiac drift hit 38% — far above your usual −3%. So even though it felt easy, your body was working noticeably harder over the distance. Tomorrow, keep it to 9K easy by feel — don't chase pace.↳ From your data: cardiac drift 38% vs usual −3% · pace 6:10/km · HR 158
🙋 Then can tomorrow become a rest day?
Sure. I'll swap tomorrow's 9K for rest and push this week's easy run back a day. Want me to make that change? (I'll only apply it once you confirm.)

And these are in early Beta right now

Our newest capabilities, free to try during your subscription. Hit a snag? Tell us — we'll make it better together.

🎥

Video running-form analysisBETA

Set up your phone, run past the camera once, and see your own form — foot strike, torso, left-right symmetry, cadence — with freeze-frames marking what to fix first. No pricey wearables; one phone is enough.

Video is deleted right after analysis, never stored · Web only for now

📊

Web data consoleBETA

Sit down at a big screen for your long-term trends: year-over-year progress, training load and overtraining risk, next PB time estimate. Every page has AI reading the data for you — time to taper? why did you get stronger these months?

console.paceriz.com →
🤖

Connect your AI assistant

Plug your training data into Claude or Cursor and ask directly — "What's my mileage trend this week?" "Predicted time for my next half?" The AI pulls your real Paceriz data on the spot. Read-only, revocable anytime.

Connected via an MCP token — secure and in your control

Real Runner Cases

These are real runner stories. One case does not guarantee results, but it shows how Paceriz helps runners make weekly training decisions.

What we believe

Real progress grows in the days that look ordinary

Most people don't run faster for lack of effort — they're too random. They copy someone's Norwegian double-threshold, blow up when they feel good, then skip a whole week when tired. Training becomes an emotional reaction, not an accumulation.

"An ordinary but sustainable training plan is the key to progress." Adapted from an interview with world record holder Jakob Ingebrigtsen

You don't need to train like an elite, and you don't need to crush every session to prove you're improving. Paceriz fixes your rhythm, controls intensity, and progresses gradually — you just run, and progress grows on its own.

There's no golden plan — only the plan that fits you best.

Who Paceriz is for

Check whether it matches your current training need before paying.

A good fit if you...

  • Have a 5K, 10K, half marathon, or marathon goal in the next 8-16 weeks
  • Run every week but are unsure whether to build, hold, or recover next week
  • Have Garmin, Strava, or Apple Health data but need it turned into a plan

Probably not a fit if you...

  • Would rather risk injury than leave any time on the table
  • Trust only feel and see no value in science-based training principles
  • Don't care whether your training is right — running by feel is enough

Choose Your Plan

Try your first week free — pay only if you love it

Free

$0

Forever free, start now

  • Running record sync
  • Dynamic VDOT fitness analysis
  • Pace recommendations
  • First week's AI weekly plan
Free Download

Monthly

$6.99/mo

2-week free trial, billed after

  • AI personalized weekly plan
  • Regenerate or adjust your plan anytime
  • AI weekly review & next-week tips
  • Race goal setting
Start 2-Week Free Trial

Full Feature Comparison

Feature Free Subscription
Device Integration
Garmin / Strava native sync
Apple Health sync
One-tap plan send to Garmin watch
Connect an AI assistant (Claude / Cursor · MCP) Limited free
Running Fitness
Dynamic VDOT fitness index
Pace guidance by type (easy / tempo / intervals)
Training load & recovery tracking
Heart rate zone guidance
Goal finish time prediction
Video running-form analysis (Beta) Limited free Limited free
Web data console (Beta) Limited free Limited free
AI Training Plan
AI personalized weekly plan
Adjust training goals
AI Coaching
AI weekly review (performance & load analysis)
AI next-week training focus
Race goal setting (5K / 10K / Half / Full)
AI periodized training plan (base → build → taper)
Supporting-race auto-adjust (race-week taper + recovery)
Free Trial
Trial days (charged only after trial ends)
Plan price

Frequently Asked Questions

Questions people actually asked — data sources, how it fits with a coach, whether beginners can keep up, and why not just use ChatGPT.

Paceriz now supports native integration with Apple HealthKit, Garmin, and Strava, covering all Garmin devices and any devices supported by Strava.

Yes. Once your plan is ready, tap "Send to Garmin" on that day's training screen. The full workout — warm-up, main set, cool-down, with pace and heart-rate targets — is created on your watch and scheduled on the right date, appearing under the watch's "Run" activity. While you run, the watch prompts you in real time when you're too fast or too slow. Running workouts are supported for now; re-sending on the same day overwrites automatically without duplicates, and you can remove it with one tap.

No — it actually plans around it. Add the race as a "supporting race" and Paceriz automatically eases that week (distance-based taper, long run switched to a recovery run, hard sessions removed) so you arrive fresh, then schedules recovery for the days after. These mid-block races are treated as checkpoints to verify your fitness and pacing, stepping you toward your main goal race.

In-person running clubs are still irreplaceable, especially for the coach's ability to correct your running form in real-time and the sense of belonging from training with fellow runners—these are invaluable aspects of running clubs. However, Paceriz can amplify the value of your running club by helping your coach better understand your training status and provide more tailored guidance.

Paceriz's training plan is progressive and dynamically adjusts next week's training volume (including distance and pace) based on last week's training. The intensity is suitable for beginner to intermediate recreational runners. You can set a goal to run 5km in three months, starting with two days a week. Follow Paceriz's plan and give it a try—we believe you'll feel changes in your fitness after just two weeks.

Modern large language models (LLMs) can indeed generate effective training plans, but they still require you to input a lot of information about yourself and detailed training records to create a plan tailored to you. Paceriz integrates and analyzes your training records, then combines them with LLM to generate "consistent" training plans, saving you the time of manually organizing data. We also provide dynamic running power, training load, and other information to help you better understand your condition and enable Paceriz to create a more suitable training plan for you.

A watch that can detect heart rate and pace changes is essential for running enthusiasts, especially when you're just starting to run and need to pay special attention to heart rate changes. By letting your body adapt to running intensity at an appropriate heart rate, you can smoothly and gradually increase your running distance and feel a sense of accomplishment!

Yes, Paceriz currently only supports iOS and Apple HealthKit. Paceriz needs your usage and encouragement to continue developing for Android and integrating with more wearable device brands to serve more diverse running enthusiasts.

Billing starts only after the trial ends through your App Store subscription. You can manage or cancel it in the App Store.

Paceriz uses weekly completion, training load, and recovery status to adjust the next week. It does not push harder every week by default.

Garmin and Strava are strong at recording and organizing data. Paceriz turns that data into concrete training decisions for next week.

Blog

From completion plans and mileage to recovery and race-week adjustments

We start from the questions runners actually search for: 5K/10K completion, weekly mileage, recovery, pacing, and race-week adjustments. Each article maps to one concrete training situation.

5K / 10K completion Mileage & recovery Pacing & fitness Race-week adjustment
View All Articles
你填 30,我們可能只排 24:Paceriz 怎麼算你的每週跑量
Training Logic

You Said 30, We Might Plan 24: How Paceriz Calculates Your Weekly Mileage

Most apps just multiply the mileage you enter. We don't. The three inputs, the 0.8–1.1× anchoring band, and why the long run is the last thing we cut.

📅 Jul 3, 2026 7 min read
Read More →
一個馬拉松訓練週期該怎麼排?從現在打底到比賽當天的週期化實戰
Training Tips

How to Plan a Marathon Training Cycle: Periodization from Base to Race Day

What base, build, peak, and taper each do, and why the order can't change — the whole marathon cycle, taken apart.

📅 Jun 25, 2026 9 min read
Read More →
照課表跑,真的有用嗎?從 Paceriz 用戶數據看訓練與成績的關係
Training Tips

How to Recover After Spring Racing and Rebuild Your Base for the Next Season

How long should you recover after spring races? If your pace drops in the heat, is that regression or normal adaptation? How to reset and rebuild.

📅 Apr 21, 2026 7 min read
Read More →

Try your first week's plan free.

Download, pick a goal, and have an executable weekly plan within 10 minutes — delete it if you don't like it.