Make your running training smarter with this running calculator app!
It provides a variety of calculation functions essential for marathon and running training in a simple and intuitive way.

Key Features

Time ↔ Distance ↔ Pace Conversion: Easily calculate your running record.

VDOT-based Training Pace: Set a systematic training pace.

Target Record Prediction: Check your predicted full and half marathon times based on your current record.

Heart Rate Zone Calculation: Customize your training intensity.

Yasso 800 Automatic Calculation: Link your full-course target record to your training plan.

Split Calculator: Distribute pace and time by zone for a stable race.

More than just simple calculations, this essential tool helps you achieve more systematic running training!
A personalized running partner for anyone who enjoys running.