Guide
Best Marathon Shoes
Reserved for future recommendations.
Tools, training, and gear
Run Smarter.
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A static preview of the SwiftRunning layout system before calculators, guides, articles, and monetization are added.
Free Tools
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Built for practical decisions.
Runner Focused
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Popular Tools
View all calculatorsPace Calculator
Calculate pace and speed from distance and finish time.
Race Time Predictor
Estimate finish times across common race distances.
VO2 Max Calculator
Estimate VO2 max and fitness band from race performance.
Marathon Splits
Build mile and kilometer split charts for a marathon goal.
Heart Rate Zones
Estimate training zones from age, max HR, and resting HR.
Featured Gear Guides
View all guidesGuide
Best Running Watches
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Guide
Winter Running Gear
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Latest Articles
View all articlesTraining
How to Run Your First Half Marathon
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Nutrition
What to Eat Before a Long Run
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Injury Prevention
Runner Mobility Basics
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