Altitude Conversion Calculator

📊 How It Works

This calculator uses research from Dr. Jack Daniels and Wehrlin & Hallén's studies on altitude's effect on VO₂max. At altitude, the reduced air pressure means less oxygen reaches your muscles, slowing performance by approximately 1.5-2% per 1,000 feet above 3,000 feet elevation.

⚡ Key Factors

• Race Duration: Longer races are affected more than short sprints
• Acclimatisation: 2-3 weeks at altitude reduces the impact
• Individual Variation: Some runners adapt better than others
• Threshold: Effects begin around 3,000 ft (914m)

🏃 Practical Applications

Use this calculator to set realistic pace expectations when racing at altitude, understand the true fitness value of high-altitude training runs, and compare performances across different elevations. Dr. Daniels suggests adding 4-5 seconds per mile for every 1,000 feet above 3,000 feet for threshold and interval training.