Run Faster Weight & Pace Calculator
See how much faster you could run at the same effort by dropping extra pounds. Enter your current stats and let the calculator do the rest. Save this page and check your gains as your weight comes down.
Projected Gains
Same effort, new race weight.
Quick Reference (Common Races)
Heads up: This is an estimate, not a guarantee. Real-world gains depend on training, sleep, nutrition, heat, terrain, shoes, and how deep you’re willing to hurt on race day.
Legal disclaimer: This calculator is for informational and educational purposes only. It is not medical advice, a diagnosis, or a guarantee of performance. Always consult a qualified healthcare professional before beginning any weight loss program or making significant changes to your training. By using this tool, you accept full responsibility for any decisions or actions you take based on these estimates and agree that the site owner is not liable for any injury, loss, or damages.
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A few pieces of kit that pair perfectly with weight‑loss‑driven speed. These are affiliate links, which means I may earn a small commission if you buy through them.