Lauren HollandBy Lauren Holland

Updated November 2026

A first time half marathon training schedule gives you a clear weekly structure for building from short runs to a 13.1-mile race. Most beginners can get ready in 12 to 16 weeks if they run three days a week, add mileage gradually and keep most runs at an easy, conversational pace. By the end of this plan you will know what each week asks of you and how to tell whether you are on track.

Before You Start: Check Your Base

A solid training plan assumes you can already run about 20 minutes without stopping, or walk-run for 30 minutes comfortably. If you cannot, spend two to four weeks building that base first. Consult a doctor before starting a new training program, especially if you have heart, joint or breathing concerns.

Shopping for one? See our guide: Furman First Half Marathon Training Plan: 6 Best Picks for Beginners (2026).

The 12-Week Schedule

This plan uses three runs per week: two easy runs and one long run. Cross-training or walking can fill the other days. Adjust by repeating a week if you feel run-down, but avoid skipping ahead.

Week Easy Run (Mon) Easy Run (Wed) Long Run (Sat) Total Weekly Miles
1 2 mi 2 mi 3 mi 7
2 2 mi 2 mi 4 mi 8
3 2.5 mi 2.5 mi 4 mi 9
4 2.5 mi 2.5 mi 5 mi 10
5 3 mi 3 mi 6 mi 12
6 3 mi 3 mi 7 mi 13
7 3 mi 3 mi 8 mi 14
8 3 mi 3 mi 6 mi (recovery) 12
9 3.5 mi 3.5 mi 9 mi 16
10 3.5 mi 3.5 mi 10 mi 17
11 3 mi 3 mi 6 mi 12
12 (race week) 2 mi Rest Race: 13.1 mi Race day

How to Run the Plan Week by Week

Keep Easy Runs Truly Easy

Run at a pace where you can speak in full sentences. Many first-timers run too fast on easy days, which leads to fatigue and injury. Walk breaks are fine at any point.

Build the Long Run Slowly

The long run is the key workout. Run it 1 to 2 minutes per mile slower than your easy pace, and never increase distance by more than about 1 mile per week. Take a walk break every 10 to 15 minutes if you need one.

Use Recovery Weeks

Week 8 and week 11 drop the mileage. These cutbacks let your muscles, tendons and energy stores adapt. Skipping them is one of the most common causes of burnout.

Gear and Preparation Checklist

  1. Running shoes fitted at a specialty store, ideally broken in by week 4
  2. Moisture-wicking clothing suited to your local weather
  3. A watch or phone app to track distance and time
  4. A plan for fueling and hydration on runs longer than 60 minutes
  5. Race registration completed and course map reviewed

Common Mistakes to Avoid

  • Running every day at full effort instead of mixing in easy days and rest
  • Increasing mileage faster than one mile per week on long runs
  • Trying new shoes, gels or foods on race day
  • Ignoring sharp or persistent pain, which often signals injury
  • Skipping the taper in race week

Well-cushioned running shoes are the single most useful purchase for a new half marathoner, because they reduce impact over 13 miles. A GPS running watch helps you keep easy runs easy and track weekly mileage without guessing. A lightweight hydration vest or handheld bottle makes longer training runs more comfortable in warm weather.

FAQ

How many days a week should a beginner run for a half marathon?

Three days per week is enough for most first-timers, with two easy runs and one long run. Adding cross-training on other days can help build fitness without extra injury risk.

Can I train for a half marathon in 8 weeks?

Eight weeks is possible only if you already run regularly, and it leaves little room for recovery. Most beginners do better with 12 weeks or more.

Should I walk during a half marathon?

Walking through aid stations or taking planned walk breaks is a smart strategy for many beginners and does not mean you have failed. Practice your walk breaks during long training runs so they feel natural on race day.

Conclusion

A first time half marathon training schedule works best when you build mileage gradually, keep most runs easy and respect your recovery weeks. Follow the 12-week plan, check in with your body each week and adjust when needed. Crossing the finish line is far more likely when you arrive at the start line healthy and prepared.

Ready to choose one?

Lauren Holland

About Lauren Holland

Lauren Holland is part of our editorial team and reviews and edits our marathon & half-marathon guides, checking product details against manufacturer specifications and owner feedback.