SnapCalc

Swim Pace Calculator

Calculate your swim pace per 100m, splits for any distance, and projected race times based on your current pace.

Only used if 'Custom distance (m)' selected above

Only used if 'Custom' selected for target distance

How to Use This Calculator

1. Select the distance you know your time for (e.g. a recent 400m time trial) 2. Enter your time in minutes and seconds 3. Select a target distance to project your finish time 4. Click Calculate

Understanding Your Pace

Your pace per 100m is the standard unit for swimming, equivalent to pace per km in running.

Pool vs Open Water

Open water swimming is typically 5–15% slower than pool swimming due to:
  • No walls to push off (no turns)
  • Waves, current, and navigation
  • Wetsuit (adds ~3–5% speed boost in cold water)

    • Triathlon Swim Benchmarks (per 100m)

  • 1:00–1:20: Elite triathlete
  • 1:20–1:40: Competitive age-grouper
  • 1:40–2:00: Solid recreational swimmer
  • 2:00–2:30: Average triathlete
  • 2:30+: Beginner / survival swimmer

    • Formula

    Pace per 100m = (total seconds / distance in metres) × 100 | Projected time = pace per 100m × target distance / 100

    Frequently Asked Questions

    What is a good 100m swim time?

    For recreational swimmers, 1:40–2:00 per 100m is solid. Competitive club swimmers typically swim 1:10–1:40/100m. Elite open-water triathletes often hold sub-1:10/100m for race distances. A complete beginner might start at 2:30–3:00/100m — this improves quickly with technique work.

    How can I improve my swim pace?

    Technique is the #1 factor — small improvements in your catch, rotation, and breathing can shave 10–20 seconds per 100m. Drills (catch-up drill, fingertip drag), pull buoy sets, and consistent weekly volume all help. Working with a coach for even 2–3 sessions can have a transformative effect on efficiency.

    Is there a difference in pace between pool and open water swimming?

    Yes — most swimmers are 5–15% slower in open water. There are no walls to push off, you must sight (lift your head to navigate), and water conditions vary. A wetsuit generally adds speed in cold open water. For triathlon planning, add 10% to your pool pace to estimate your open water race pace.

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