Are you a runner wondering how weight loss might affect your running speed? The Weight Pace Calculator is designed to help you explore this relationship. Using established performance models, this web application provides insightful estimations, allowing you to visualize potential pace improvements as you work towards a target weight.

Getting started is simple: input your biological gender, height, current weight, and your current lactate threshold pace (in minutes and seconds per kilometer). For even more refined calculations, you can optionally include your current body fat percentage.

Based on your data, the calculator projects your estimated threshold pace and potential race times for common distances (5k, 10k, Half Marathon, and Marathon) at various target weights. The projections extend down to a minimum healthy weight, calculated using a BMI of 18.5.

Key Features:

  • Personalized Inputs: Tailor calculations to your specific stats.
  • Pace & Race Time Projections: Visualize potential speed gains across standard race distances.
  • Body Fat Estimation: Understand potential body composition changes (requires initial BFP).
  • Health Indicators: Highlights minimum healthy weight and warns about potentially unhealthy low body fat percentages.
  • Clear Warnings: Provides context about the estimation model and its limitations.
  • Responsive Design: Works smoothly on desktop and mobile.
  • Light/Dark Mode: Adapts to your preferred theme.

Disclaimer: Remember, these are estimates. Real-world results depend on many factors including training, body composition changes (muscle vs. fat), genetics, and running efficiency. Use this tool for informational and motivational purposes, not as a substitute for professional advice.

Go to Weight Pace Calculator