Training for First Half Marathon: A Step-by-Step Guide for Beginners

By Lauren Holland

Updated November 2026

Training for first half marathon distance is one of the most achievable goals in running, and with a sensible plan you can go from a few easy miles to a confident 13.1-mile finish in roughly 12 to 16 weeks. This guide walks you through how to build your weekly mileage, structure your runs, fuel and recover properly, and taper into race day. By the end, you will know exactly what each week should look like and why it matters.

How Long Does Training for a First Half Marathon Take?

Most beginners need 12 to 16 weeks of consistent training, provided they already run three to four days a week or can walk-run comfortably for 20 to 30 minutes. If you are starting from zero, plan for 16 weeks or longer. The main variable is not your fitness on day one but how steadily you can add load without getting hurt. Many new runners who rush the process end up with shin splints, knee pain or Achilles problems, which are far harder to fix than a slightly slower finish time.

If you want a structured starting point, compare a few programs before committing. 3 Best Run Your First Half Marathon Training Programs (2026): Our Picks lays out three options with different weekly structures, and Half Marathon Training Fundamentals explains the principles behind them.

Step 1: Assess Your Starting Point

Before you pick a plan, be honest about your current base. A useful benchmark is whether you can run continuously for 30 minutes at a conversational pace, three times per week. If you can, you are ready for an intermediate-beginner plan that peaks around 10 to 12 miles for the long run. If you cannot, start with a run-walk approach and build to continuous running first.

• Count your average weekly mileage over the last four weeks.
• Note your longest recent run and how you felt afterward.
• Check for any niggles in your calves, shins, knees or hips.
• Schedule a checkup with a doctor or sports medicine professional if you have a heart condition, joint problems, or have been inactive for a long time.

Step 2: Choose a Plan That Fits Your Schedule

A good first-timer plan usually runs three to five days per week, with one long run, one or two easy runs, and at least one full rest day. Cross-training such as cycling, swimming or strength work can replace one easy run without hurting your progress. Look for plans that increase weekly mileage by no more than about 10 percent per week, and that include a down week every three or four weeks.

For a printable schedule, Furman First Half-Marathon Training Plan PDF: A Step-by-Step Guide is a useful reference, and First Half Marathon Training Furman: A Step-by-Step Guide for Beginners shows how to adapt it. If you are looking at multiple options, Furman First Half Marathon Training Plan: 6 Best Picks for Beginners (2026) compares different approaches side by side.

Sample Weekly Structure

Step 3: Build Your Long Run Gradually

The long run is the backbone of half marathon training. Start where you are comfortable, add roughly one mile every week or every other week, and keep the pace easy enough that you could hold a conversation. Most plans peak the long run between 10 and 12 miles, roughly three to four weeks before race day. You do not need to run the full 13.1 miles in training; race-day adrenaline and a tapered body will carry you the final distance.

Pacing the Long Run

Run your long runs about 60 to 90 seconds per mile slower than your goal race pace. Many first-timers run them too fast, which leads to fatigue and extended recovery. If you are unsure of your pace, use effort: you should be able to speak in full sentences throughout.

Step 4: Add Speed and Strength Work

Once your base is solid, you can add one short quality session per week. Simple options include fartlek runs (unstructured bursts of faster running within an easy run) or short intervals such as 6 repeats of 2 minutes at a hard but controlled effort with 90 seconds of easy jogging between. For more detail, see Interval Training Workouts for Marathon Runners and How to Use Tempo Runs in Your Marathon Training, which explain how these sessions fit into a plan.

Strength training two times per week, focusing on hips, glutes, calves and core, reduces injury risk for most runners. Keep sessions to 20 to 30 minutes and use bodyweight exercises such as glute bridges, single-leg squats, calf raises and planks.

Step 5: Fuel and Hydrate Properly

You do not need elaborate nutrition for a half marathon, but you do need a plan. For runs longer than about 60 minutes, consume roughly 30 to 60 grams of carbohydrate per hour, and practice this during training so race day holds no surprises. Energy gels, chews and sports drinks are common options. Before long runs, eat a familiar, low-fiber meal two to three hours ahead. Drink to thirst, and avoid trying new products on race morning.

If you plan to use gels, When to Take Energy Gels During Half Marathon: A Step-by-Step Timing Guide explains exactly when to take them, and 6 Best Energy Gels for Half Marathon Training: Top Picks Compared compares popular options.

Anything you have not practiced in training should not be used on race day. This applies to shoes, socks, clothing, gels and breakfast.

Step 6: Recover and Protect Against Injury

Recovery is where your fitness actually builds. Sleep seven to nine hours where possible, eat enough protein and carbohydrates, and take real rest days. Replace running shoes every 300 to 500 miles, a range many manufacturers and running specialists cite. If a pain sharpens with each step, changes your gait, or lingers beyond a few days, reduce mileage and consult a physical therapist or sports medicine doctor rather than pushing through.

Step 7: Taper and Prepare for Race Week

In the final two weeks, reduce your weekly mileage by roughly 20 to 40 percent while keeping a few short, faster efforts to stay sharp. Use this time to organize race logistics, review the course, lay out your gear and plan your pre-race breakfast. Your Your Guide to the Half Marathon Taper Week covers the details. For a broader overview of what to expect, How to Prepare for Your First Half Marathon is a useful companion.

Recommended gear

A few items make training more comfortable and consistent, though none are mandatory.

• Neutral running shoes: A well-fitted pair suited to your foot type reduces the chance of overuse injuries. Visit a specialty running store for a gait assessment if you can. View on Amazon
• Moisture-wicking running socks: Synthetic or merino blends help prevent blisters on long runs. View on Amazon
• Foam roller: Useful for easing tight calves, quads and IT bands after long efforts. View on Amazon
• GPS running watch: Helps you track pace and distance so you can keep easy runs easy. View on Amazon

Common Mistakes to Avoid

• Running every day at the same pace. Most runs should be easy. Hard days should be deliberate, not accidental.
• Increasing mileage too fast. Keep weekly increases near 10 percent and include down weeks.
• Skipping the long run practice. Race day tests endurance you only build by doing long runs.
• Trying new gear or food on race day. Test everything during training.
• Ignoring pain. Sharp or worsening pain is a signal to rest and get assessed.
• Neglecting sleep and nutrition. Recovery drives adaptation as much as the workouts do.

FAQ

How many days a week should I run when training for my first half marathon?

Three to four running days per week is enough for most beginners, with at least one full rest day. Adding cross-training can support your progress without extra impact stress.

How far should my longest run be before race day?

Most plans peak the long run at 10 to 12 miles, about three to four weeks before the race. Running the full 13.1 miles in training is not necessary and can increase injury risk.

Can I walk during a half marathon?

Yes. Many first-timers use planned run-walk intervals, such as running for 9 minutes and walking for 1, and finish strong. Walk breaks do not disqualify you and can help you avoid fatigue.

Do I need to do strength training?

Strength work two times per week is strongly recommended. It supports the hips, glutes and calves that absorb running load and can reduce injury risk.

How much weight should I lose before training?

Training is not a reason to diet aggressively. Focus on fueling enough to support your workouts. If you have specific weight or nutrition goals, consult a registered dietitian.

What should I do if I get injured during training?

Stop running if pain is sharp, worsening, or changes how you move. Rest, cross-train, and consult a physical therapist or doctor. Returning gradually is usually better than forcing your way through.

How long does it take to recover after the race?

Most runners need one to two weeks of easy activity after a half marathon. Listen to your body and resume normal training gradually.

Conclusion

Training for first half marathon distance rewards patience, consistency and sensible progression more than heroic workouts. Choose a plan that fits your schedule, build your long run gradually, practice your fueling, and taper well. Stay alert to pain, and you will reach the start line ready to enjoy the 13.1 miles.

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.