Can you run a sub-1:45 or sub-1:30 half marathon on 3 runs a week?

Yes. The half marathon is run predominantly at or near lactate threshold effort. By completing one dedicated threshold/cruise interval session, one steady aerobic pace run, and one progressive weekend long run up to 18–20 km, you build the required aerobic power and stamina without accumulating heavy musculoskeletal fatigue.

Do I need carbohydrates during a half marathon?

For efforts lasting between 75 and 120 minutes, taking 30 to 50 grams of carbohydrates per hour preserves glycogen and prevents pace degradation in the final 5 kilometres. Testing 1 or 2 gels during your weekend progressive runs is essential to ensure digestive comfort on race day.

How do I export this schedule to my calendar?

Enter your half marathon race date in the date picker and click 'Sync to Calendar (.ics)'. The exported file will map the 12-week progression onto your calendar automatically.

12-Week Speed & Stamina Block

3-Day-a-Week Half Marathon Training Plan

Execute your half marathon goal on three quality runs per week. Designed for runners who cross-train, lift weights, or want to avoid overuse fatigue while developing sharp lactate threshold speed.

Efficiency First: Three high-stimulus sessions engineered to build stamina and speed concurrently.

1. Lactate Intervals

800m to 2km intervals at threshold effort to push back fatigue when running hard.

2. Aerobic Quality

Mid-week aerobic running with strides to maintain cadence and neuromuscular efficiency.

3. Fast-Finish Long Run

Builds up to 18–20 km with final segments locked into half marathon race pace.

Generate Your 3-Day Half Marathon Plan

Set pacing targets, assign days, and download your schedule.

Target Distance / Format

Current Base Mileage

Goal Time Tier

Exact Goal Time (optional)

Overrides the tier above. Format h:mm

Runs Per Week

Custom Day Assignment

Long Run Day

Threshold / Speed Day

Race Date (optional)

Duration

12 Weeks

3 Runs / Week

Peak Volume

50 km/wk

Quality Load

Fuel Target

50g / hr

~400–600mg Na+/hr

Half Marathon Pacing (per km)

Volume Progression

Base Build Peak Taper

Week 1

3 focused runs each week. Keep your easy run conversational and practice half marathon race pace during progressive long runs.

Recommended Kit for Half Marathon Pacing

Field-tested gear to hold race pace effortlessly and carry 30–50g/hr carbohydrates without a bulky pack.

Affiliate Picks

Streamlined Storage

Runnr™ Storage Half Tights / Shorts

Holds 2–4 gels flat against your lumbar spine with zero bounce at threshold and 13.1 race pace.

Check Options →

Compact Hydration

Salomon 150ml / 250ml Soft Flask

The ideal volume for carrying custom DIY liquid gels on half marathon runs without carrying a vest.

Check Flasks →

Fast Uptake

SiS Beta Fuel Dual-Source Gels

40g carbs in a 1:0.8 ratio for smooth absorption when pushing close to lactate threshold.

Check Amazon →

Essential Protocols for Your Training Block

Master fueling, pacing discipline, and race strategy alongside your training volume.

Gut Protocol

Explore Related Plans & Shoe Guides

Stepping Up to 26.2?