Half Marathon
Under 2 Hours
Goal pace: 5:41/km. The most chased barrier in road running — and the most achievable with the right training.
What it takes.
Breaking 2 hours means holding 5:41/km for 21.1k — roughly Magic Index 36. As a reference: if you run 10k near 55 minutes or 5k around 26:30, you have the physiological base for sub-2h.
If you currently finish between 2:05 and 2:15, one well-executed 12-16 week cycle is usually enough. Coming from 2:20+, plan two cycles: one for base, one race-specific.
Calculate your sub-2h training paces
Enter a recent race result to check whether your Magic Index is at 36+ — and which pace to use in every workout.
Training paces for sub-2h.
Aerobic base. Most of the week.
20-40 min at threshold.
Reps of 800m to 1km.
Blocks inside specific workouts.
What the training looks like.
Volume
40-55km per week at peak, across 4-5 runs. Consistency beats isolated big weeks.
2 quality sessions
1 tempo run at threshold + 1 interval workout per week. Everything else genuinely easy.
Long run
14-18km, with race-pace blocks in the final weeks of the cycle.
Specificity
In the last 6 weeks, mid-week runs with growing segments at 5:41/km teach your body to hold goal pace.
Half marathon plans.
What sub-2h means.
Running the half under 2 hours puts you ahead of most finishers at any big-city race. It is the line between completing the distance and racing the clock.
It is also the gateway to bigger goals: consolidate sub-2h with structured training and you are one or two cycles away from sub-1:50 — with enough volume base to take on a marathon safely.
Race strategy.
The safest route under 2 hours is a slightly negative split: the first 5k at 5:45-5:48/km, settling into 5:38-5:41 from km 6 on. Opening at 5:20 'to bank time' is the mistake that kills sub-2h attempts at km 17.
Fueling: one gel between 50 and 60 minutes, with water. Drink at every station from km 7. And trust the training — if the race-pace blocks came off in workouts, the race will come off too.
Frequently asked questions.
Most popular plans. Start today.
Personalized training. Built for your goal.
Join 7,934 runners
No commitment. Cancel anytime.
Simple. No surprises.
One price. Full access. Cancel anytime.
Monthly
- Access to 144+ running plans
- Magic pace calculator
- Guided workouts on smartwatch
- Garmin, Polar & Strava
- Performance analysis
- No ads
Annual
Save 25% — $7.50/mo
- Everything in monthly, plus:
- 2 months discount included
- Priority support
- Early access to new features
Join 1.000+ runners.
Train with the legends’ methods and watch your pace drop.
$9.99/mo · No commitment · Cancel anytime