Your First Half-Marathon: A 12-Week Approach for Busy Men
Three runs a week, one long one on the weekend, zero heroics. How to reach the start line healthy and finish strong.
MAN TARGET EditorsOctober 11, 2026 3 min read
Twenty-one kilometres. Long enough to demand respect, short enough to fit into a working life. The half-marathon is the sweet spot for busy men: it rewards consistency more than talent, and twelve weeks is a realistic window if you can already run for around thirty minutes without stopping. Before you start, check with a doctor, particularly if you're new to endurance training, over 40, carrying extra weight or have any heart, blood pressure or joint concerns.
The weekly structure
- Run 1, easy: 30–45 minutes at a pace where you could hold a conversation.
- Run 2, quality: a short warm-up, then intervals or a steady tempo block, then cool down.
- Run 3, long: the weekend run that grows gradually across the plan.
- Two short strength sessions: squats, lunges, hip bridges, calf raises, planks.
- At least one full rest day. Recovery is part of training, not a break from it.
The three phases
Weeks 1–4 are about building the habit. Keep everything easy and lengthen the long run a little each week. Weeks 5–8 add some quality: short intervals or tempo efforts once a week, while the long run keeps creeping up. Make every fourth week lighter so your body can absorb the work. Weeks 9–12 peak and then taper. Your longest run should come a few weeks before the race. The last ten days are about freshness, not fitness.
The plan doesn't care how hard you trained on Tuesday. It cares whether you showed up on Thursday.
Running every session too fast. Making up missed runs by doubling the next one. Skipping strength work. Ignoring sleep. Buying new shoes the week of the race. Pain that changes how you run is a signal to stop and see a professional, not to push through.
Your race-ready checklist
- Book the race now. A date on the calendar turns intention into commitment.
- Schedule your three runs like meetings, early in the day if possible.
- Practise race-day breakfast, drinks and gels on your long runs.
- Run your final long effort two to three weeks out, then reduce volume.
- Race week: sleep, hydrate, lay out your kit and start slower than you think.
Key takeaways
- Three runs a week is enough: one easy, one with some pace, one long.
- Most of your running should feel conversational. Slow builds the engine.
- Increase the long run gradually and take an easier week every few weeks.
- Get cleared by a doctor before you start, especially if you're new to endurance training.
FAQ
Can I train for a half-marathon in 12 weeks?
If you can already run continuously for around 30 minutes and have your doctor's go-ahead, 12 weeks is a realistic window for many beginners.
How many days a week should I run for a half-marathon?
Three runs a week plus strength work suits most busy beginners. More is not automatically better.
How fast should my easy runs be?
Slow enough to talk in full sentences. Most of your training should feel comfortable.
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