Triathlon Regimen logoTriathlon RegimenScience-backed tools for triathletes
CalculatorsGuides
/
Open Race Calculator
/
Guides LibraryTriathlonSwimBikeRun
CalculatorsGuidesOpen Race Calculator
Quick Help
Editorial TeamContact

Triathlon Regimen

Built for triathletes who want better decisions, not more noise.

Free race calculators, benchmark data, and training metrics for every triathlon distance from Super Sprint to Ironman.

Explore

  • Triathlon
  • Swim
  • Bike
  • Run
  • Guides

Our Platforms

  • Triathlon Regimen
  • Cycling Regimen
  • Run Regimen
  • Swimming Regimen
  • Rowing Regimen

Trust

  • Editorial Team
  • Editorial Standards
  • About
  • Contact
  • Privacy
  • Terms

© 2026 Triathlon Regimen. Science-backed tools for triathletes.

Privacy-first. No ads, no account required.

  1. Home
  2. /Calculators
  3. /Triathlon
  4. /Pace Converter
Last reviewed: May 2, 2026Reviewed by: Manish Rajput

FAQ

Frequently asked questions

How do I convert min/km to mph?

Divide 60 by your pace in minutes per km to get km/h, then divide by 1.609 to get mph. For example, 5:00/km = 12 km/h = 7.46 mph. This converter handles the math automatically.

Why is my open-water swim pace slower than pool pace?

Open water adds sighting, navigation, currents, and drafting dynamics that are absent in a pool. A 5-15% slowdown is typical and expected.

Are the race time projections accurate?

They assume constant pace on a flat course. Real race times are affected by terrain, fatigue, pacing strategy, and conditions. Use projections as directional planning references, not guarantees.

Which discipline has the biggest impact on triathlon finish time?

The bike leg typically accounts for the most time in a triathlon. Small speed improvements on the bike tend to save more total time than equivalent improvements in swimming.

Evidence

References

  • Swimming performance and pacing review

    PubMed Central

  • Pacing strategies during the run in world-class triathlon

    PubMed

This calculator provides estimates based on published exercise science research. Individual responses vary. These outputs are not a substitute for coaching, medical clearance, or your own experience. Always listen to your body and consult a qualified professional before making significant changes to your training.

Related calculators

Keep the next decision close.

Critical Swim Speed Calculator

Swim

Calculate critical swim speed from two swim efforts and turn it into triathlon-ready threshold pacing guidance.

FTP Calculator

Bike

Estimate functional threshold power and turn it into cleaner bike zones, Sweet Spot targets, and triathlon pacing anchors.

VDOT Calculator

Run

Turn a recent race result into practical run training paces, track splits, equivalent performances, and triathlon-aware interpretation.

Multi-sport conversion

Pace Converter

Convert between pace, speed, and time across swim, bike, and run. Instantly compare formats and see race projections.

Run input

Enter your running pace to convert.

Pace (per km)

min
sec

Your Run Pace

5:00 /km

All formats

5:00

min/km

8:03

min/mile

12.0

km/h

7.5

mph

Race time projections

Estimated finish times at this pace (flat course, standalone run).

DistanceTime
5K25:00
10K50:00
Half Marathon1:45:29
Marathon3:30:59

Triathlon context

• Solid intermediate running pace. At this level, run consistency and pacing discipline matter more than raw speed.

• In triathlon, run pace off the bike is typically 5-15% slower than standalone race pace due to accumulated fatigue.

Related tools

CSS Calculator

Find your swim threshold pace

FTP Calculator

Estimate cycling threshold power

VDOT Calculator

Run training paces from race results

Race Time Calculator

Plan full triathlon splits

Informational tool. This converter is for personal reference and awareness purposes only. Race time projections assume constant pace on a flat course and do not account for fatigue, terrain, or conditions. Actual results will vary. This tool is not a substitute for professional coaching or race planning guidance.