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Free Tools & Calculators

Free
⏱️ Pace & Split Time Calculator
Instantly estimate your split times per kilometer or per lap based on your race goal. Ideal for visualizing your pace over 5 km, 10 km, half marathon, or marathon.
Free
🏃 VMA Calculator
Calculate your Maximum Aerobic Speed (VMA) from your race times or a track test. Obtain precise training paces based on your VMA.
Free
🫁 VO₂max Calculator
Estimate your VO₂max using several reliable methods (Rockport test, heart rate, race time). Measure your endurance level and compare yourself to performance standards
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Nice move ✅ You're as clever as a Fox 🦊Welcome to the pack!
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🦊 Welcome to Fox Running Club!

Running with Alfred, your true sparring partner! Here, we talk about running, training, and competitions with passion (and a touch of mischief). Whether you're looking for a personalized training plan, tips to improve, or the race calendar in France, Alfred, our speed expert fox, is here to guide you.​