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Couch to 5K (C25K)

fitness · easy · 1.5 hours/week (3 x 30-minute sessions)

What is Couch to 5K (C25K)?

Structured 9-week running program that takes complete beginners from zero to running 5K continuously using progressive walk/run intervals. Backed by the UK National Health Service and used by over 110,000 runners.

Is there evidence for it?

EVIDENCEstrong

How do you do Couch to 5K (C25K)?

  1. 1.Run 3 times per week on non-consecutive days (e.g., Mon/Wed/Fri) — rest days are essential
  2. 2.Week 1: alternate 60 seconds running with 90 seconds walking for 20 minutes total
  3. 3.Follow the progressive plan: each week increases running intervals and decreases walking intervals
  4. 4.Focus on time, not speed or distance — run at a conversational pace (you should be able to talk)
  5. 5.By week 8-9, you'll be running 30 minutes continuously; register for a local 5K race for motivation

How long does it take?

1.5 hours/week (3 x 30-minute sessions).

Is it hard to start?

easy.

Source: Josh Clark (creator, 1996); UK NHS official C25K program; widely validated in public health settings
running · beginner · cardio · progressive · endurance
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