12-Week Half Marathon Training Plan for a Sub-2-Hour Finish

Nearly 30,000 runners crossed the start line at the NYC Half Marathon last year, making it one of the largest half marathons in the world. Most of them didn't just show up. They trained with a plan, built their mileage progressively, and respected the process. If sub-2 hours is your target, here's a structure that works.

Key Takeaways

A 12-week plan with 3-4 weekly runs is optimal for a sub-2-hour finish
Weekly mileage should peak at 45-55 km around weeks 8-9 before tapering
The weekly long run is the single most important session in the program

Running 13.1 miles in under two hours means averaging roughly 9:09 per mile, or about 5:41 per kilometer. That's an achievable goal for most recreational runners with 12 weeks of focused, consistent training. The key word is consistent.

Who This Plan Is For

This plan is designed for runners who can already comfortably run 3 to 4 miles without stopping. You don't need to be fast. You need to be ready to train four days a week, respect your rest days, and follow the pacing guidelines as written.

If you're currently running less than 15 miles per week, spend two to three weeks building your base before starting week one. Jumping into structured training without a foundation is the fastest route to injury.

The Core Structure

Each week includes four runs: an easy run, a tempo or workout run, a mid-week medium run, and a long run on the weekend. The remaining three days are rest or active recovery. Research consistently shows that 80% of your weekly mileage should be done at easy, conversational pace. Most recreational runners train too hard, too often, and plateau as a result.

Easy pace for this plan means you can hold a full conversation without gasping. If you're breathing too hard to speak in complete sentences, you're going too fast.

Weeks 1 to 4: Building the Base

The first month is about accumulating miles safely. You're training your aerobic engine, your tendons, and your bones to handle more load. Don't rush this phase.

Day 1: Easy run, 3 to 4 miles at conversational pace
Day 2: Rest or light cross-training (cycling, swimming, yoga)
Day 3: Tempo run, 20 to 25 minutes at a comfortably hard effort, around 8:30 per mile pace
Day 4: Rest
Day 5: Easy run, 4 to 5 miles
Day 6: Long run, starting at 6 miles in week one, adding one mile per week
Day 7: Rest or 30-minute walk

By the end of week four, your long run should reach 9 miles. Your weekly mileage will be hovering around 20 to 22 miles. That's enough volume to build fitness without breaking your body down.

Weeks 5 to 8: Building Race Fitness

This is where the plan gets more specific. You're adding pace work and starting to simulate race conditions. The goal is to make your goal pace feel familiar, not foreign, on race day.

Day 1: Easy run, 4 to 5 miles
Day 2: Rest or cross-training
Day 3: Interval workout. Try 6 x 800 meters at your 10K effort, roughly 8:00 to 8:15 per mile, with 90 seconds of walking recovery between each
Day 4: Rest
Day 5: Pace run, 4 to 5 miles with the middle 2 miles at goal race pace (9:09 per mile)
Day 6: Long run, progressing from 10 to 12 miles at easy effort
Day 7: Rest

Intervals improve your VO2 max and running economy. Studies published in sports science journals show that even two interval sessions per week can significantly improve 5K and half marathon performance in recreational runners over an eight-week period.

Don't skip the easy days to fit in more hard sessions. Recovery is where adaptation happens.

Weeks 9 to 11: Peak Training

These three weeks are your hardest. Your long run peaks at 12 miles. Your total weekly volume reaches its highest point, typically 25 to 28 miles. You're also running more miles at or near race pace to build confidence and efficiency.

Day 1: Easy run, 5 miles
Day 2: Cross-training or rest
Day 3: Interval or tempo workout. Alternate between weeks: one week do 5 x 1 mile at 8:45 pace, the next do a 35-minute tempo run
Day 4: Rest
Day 5: Race pace run, 5 to 6 miles with 3 to 4 miles at 9:09 pace
Day 6: Long run, 11 to 12 miles at easy effort
Day 7: Rest

Week 10 is your peak long run week. Resist the urge to run the full 13.1 miles in training. Your race-day performance comes from the cumulative fitness you've built, not from a single long run. Running the full distance in training adds fatigue without meaningful benefit this close to race day.

Week 12: Taper and Race

Tapering isn't laziness. It's science. Reducing mileage by 40 to 50% in the final week allows your muscles to repair, glycogen stores to top off, and your body to arrive at the start line fresh.

Days 1 to 2: Easy runs, 3 to 4 miles each
Day 3: 20-minute shakeout run with 4 to 6 strides at race pace
Days 4 to 5: Rest or light walking
Day 6: Race day

On race morning, don't do anything new. Wear shoes you've trained in. Eat what you've eaten before long runs. Start conservatively. The NYC Half Marathon, like most big-city races, goes out fast because of crowd energy and adrenaline. Stick to your 9:09 pace for the first four miles. You'll pass people in the second half, and that's exactly where you want to be.

Nutrition and Recovery

For runs over 75 minutes, practice taking in carbohydrates. Aim for 30 to 60 grams of carbohydrate per hour during your long runs, whether that's gels, chews, or sports drinks. Train your gut now so it doesn't surprise you on race day.

Sleep is your most underrated training tool. Runners who average less than seven hours of sleep show measurably slower recovery times and higher injury rates according to published research in sports medicine. Prioritize it like a workout.

Gear Worth Having

You don't need much. A GPS watch helps you dial in pace without guessing. Good running shoes fitted at a specialty store matter more than the brand. And a foam roller used for 10 minutes after hard sessions will keep your legs fresher across the full 12 weeks.

For more on choosing the right training shoes for road racing, check out our guide to the best running shoes for half marathon training.

Twelve weeks is enough time to get there. Follow the plan, trust the process, and you'll cross that finish line under two hours.

Frequently Asked Questions

How many runs per week for half marathon training?

A 12-week plan calls for 3-4 runs per week including one long run on weekends. This balances recovery with the mileage you need.

What weekly mileage for a sub-2-hour half?

Build to 45-55 km around weeks 8-9, then taper down over the final 2-3 weeks. Start around 25-30 km in week 1.

How should you taper before a half marathon?

Cut volume 30-40% over the last 2 weeks while keeping quality session intensity. Your body recovers without losing fitness.

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