Running a half marathon in under 90 minutes is no easy feat—it’s a goal that pushes your body and mind to their limits.
But guess what? With the right approach, it’s a challenge you can conquer.
I remember my first attempt at a sub-90 half. The first few miles felt like a breeze, but by mile 8, my legs were screaming. What helped me push through was breaking the race into smaller, manageable segments.
What’s more?
Having coached numerous runners to this goal and raced it myself, I can attest to having a solid base—such as a sub-40 minute 10K or a sub-20 minute 5K—before embarking on this challenging endeavor.
Whether you’re an experienced runner or just setting your sights on this milestone, I’m here to guide you through the training strategies to make this dream a reality.
The Required Pace for a 1:30 Half Marathon
To break that 90-minute barrier, you must run at an average pace of 6:50 per mile (or 4:15 per kilometer).
It’s a fast pace, and there’s no sugar-coating it—this goal requires dedication. Ideally, you should already be running strong in shorter races, like a sub-18 5K, sub-40 10K, or a sub-3:15 marathon. These times give you a solid foundation for stepping up to a sub-90-minute half.
The Requirements Of Running A 1.30 Half Marathon
Firstly, it’s important to know that running a sub-90-minute half marathon requires more than just showing up on race day and running as fast as possible. It entails preparation, consistency, and dedication.
If you’re already an experienced runner and have completed several races before, you’re on the right track. However, if you’re a beginner runner, don’t be discouraged. You can work towards achieving this goal with the right training plan and attitude.
I’d recommend completing a half marathon in or around the 110-minute mark to give yourself the best chance at success.
This means you have a good base to work from and can focus on improving your pace. If you can run a 10K within 40 to 42 minutes, you’re on the right track to achieving your sub-90-minute goal.
How to Train for a Sub-90 Half Marathon
The secret to smashing a 1:30 half marathon is in the details of your training. You can’t just wing it and hope for the best on race day. You need to structure your runs with a blend of easy, speedwork, tempo, and long runs. And don’t forget cross-training—it’s essential to keeping your body balanced and injury-free.
Easy Runs
These are the backbone of your training. They should feel comfortable, almost too easy, with no pressure on pace. The goal here is to build aerobic endurance. You’re in the right zone if you can hold a conversation while running.
To err on caution, I recommend using a heart rate monitor. Your target zone should be around 65 and 75 of your maximum heart rate.
Interval Training
If you’re looking to race at a fast pace, you should train at your pace (and a little bit faster) at least once a week. This is where interval training comes in, which consists of running one fast interval followed by one slow interval.
Then you repeat for the duration of the session. Interval training is the best way to improve your speed when training for a half marathon. Speedwork can also teach your body how to recruit more and more muscle fibers while running.
My 1.30 HM training plan includes various interval work, ranging from 400-meter to 2Km intervals. The intervals should be performed as instructed in the plan. For shorter repeats like 400 and 800, I recommend doing them on a track, but for longer repeats, you might want to do them on the road.
Here’s the break-down:
- 400m reps: Run at a 6:00/mile pace with 60-second recovery.
- 800m reps: Shoot for a 6:20/mile pace with a 90-second recovery.
- 1K reps: Aim for a 6:40/mile pace with a 2-minute recovery.
- 2K reps: Hold 6:50/mile pace with 2-minute recovery.
Tempo Runs
Tempo runs consist of non-stop sessions with a build-up halfway to a 10K race pace, and they’ve a lot to offer.
Tempo runs are fantastic strength builders and are a must, especially when training for a half marathon. They also help keep pace without building too much lactate in your muscles, which eventually helps keep a faster pace for a longer period.
The typical tempo runs would start with 10 to 15 minutes of easy running, then speed up gradually for 20 to 30 minutes near the midpoint, then 5 to 10 minutes easy as a cool-down toward the end.
That’s all.
I’d also recommend performing tempo workouts at your target half-marathon pace, 5:50 per mile. Build up the speed gradually, not suddenly.
Long Runs
Taking on the 90-minute half marathon means that you likely already do a long run of roughly 90 minutes or longer every weekend.
If that’s the case, then I’m not surprised.
Long runs are the bread and butter of endurance training.
They’re the best for building aerobic endurance.
But how do you increase distance without incurring injury?
The key is to do it gradually. As a rule, build up the distance of your long runs gradually. Following the 10 percent rule is the best way to go.
During the program, you’ll add 1-2 miles to your long run every 1-2 weeks. You’ll also be taking a recovery week every 4 to 5 weeks, reducing the long run distance by 30 percent.
To complete a sub-90-minute half marathon, you’ll want to run more than 13.1 miles during your long peak runs—4 to 6 weeks before race day.
Don’t try to run these sessions too fast.
Forget about how fast or far you’re going. Focus on spending more time on your feet. Time over distance
Strength Training & Cross-Training
Running isn’t the only thing you need to focus on. Strength training is key for injury prevention and overall endurance. Incorporate exercises like lunges, push-ups, and planks into your routine.
Cross-training activities like cycling or swimming will help build cardiovascular fitness without the impact on your joints.
Warm-Up and Recovery
Warming up properly is crucial for peak performance and injury prevention. Start with a 10-15 minute jog for speedwork, followed by dynamic stretches like leg swings and lunges. Finish with a few 100-meter strides at near race pace. For long runs, you can start slow and use the first few miles as a warm-up.
Don’t forget to stretch after your runs. And always listen to your body—rest is just as important as the hard work you’re putting in.
Race Day Pacing Strategy
One effective strategy is to divide the race into smaller segments and pace accordingly.
For example, you can divide the half marathon into three 4-mile segments and one 5.1-mile segment.
During the first two segments, aim to run slightly slower than your goal pace.
In the third segment, aim to run at your goal pace. Finally, during the last segment, aim to slightly increase your pace.
What’s more?
Adjust your pacing based on course elevation, weather conditions, and fitness level.
Weekly Mileage
One of the keys to success is gradually building up your weekly mileage. While no magic number of miles will guarantee you a sub-90-minute finish, most runners must put in some serious work to get there.
If you’re running around 20 miles per week, don’t worry, you can still get there! Aim to gradually increase your weekly mileage to around 40 miles throughout the early weeks of your training.
But it’s not just about running more miles. You also need to be smart about how you structure your training. Keep your long run mileage to around 25-35% of your weekly volume.
For example, if you’re running 26 miles a week, aim for a long run of around 6-9 miles. Going too hard or fast can lead to injuries that only set you back in training.
As you build your weekly mileage, be sure to also focus on cross-training and strength training to prevent injury and build overall body strength.
A strong body is resilient, and you’ll be better able to handle the rigors of training if you’re doing push-ups, pull-ups, lunges, and other compound movements.
The 1.30 Half Marathon Training Plan
Now, onto the training plan. This is just a guide, so feel free to adjust it to fit your schedule and needs. But remember, consistency is key. You won’t get to the finish line in under 90 minutes if you’re not putting in the work.
This plan includes a mix of easy runs, speed work, and a long run each week to help you build endurance and speed.
Week – 1
- Monday – Rest Day or Cross train
- Tuesday – Easy Run: 4 miles
- Wednesday—Speedwork: 6 X 800M
- Thursday– Easy Run: 4 miles
- Friday—Rest Day or Cross train
- Saturday– Steady Run: 4 miles
- Sunday – Long Run: 10 miles
Week – 2
- Monday – Rest Day or Cross train
- Tuesday – Easy Run: 5 miles
- Wednesday—Speedwork: 10 X 400M
- Thursday– Easy Run: 5 miles
- Friday—Rest Day or Cross train
- Saturday– Steady Run: 6 miles
- Sunday – Long Run: 10 miles
Week – 3
- Monday – Rest Day or Cross train
- Tuesday – Easy Run: 5 miles
- Wednesday—Speedwork: 5 X 1K
- Thursday– Easy Run: 6 miles
- Friday—Rest Day or Cross train
- Saturday– Steady Run: 4 miles on hills
- Sunday – Long Run: 11 miles
Week – 4
- Monday – Rest Day or Cross train
- Tuesday – Easy Run: 6 miles
- Wednesday—Speedwork: 4 X 2K
- Thursday– Easy Run: 4 miles
- Friday—Rest Day or Cross train
- Saturday– Tempo Run: 4 miles
- Sunday – Long Run: 12 miles
Week – 5
- Monday – Rest Day or Cross train
- Tuesday – Easy Run: 7 miles
- Wednesday—Speedwork: 12 X 400M
- Thursday– Easy Run: 5 miles
- Friday—Rest Day or Cross train
- Saturday– Steady Run: 6 miles
- Sunday – Long Run: 13 miles
Week – 6
- Monday – Rest Day or Cross train
- Tuesday – Easy Run: 7 miles
- Wednesday—tempo run: 5 miles
- Thursday– Easy Run: 5 miles
- Friday—Rest Day or Cross train
- Saturday– Steady Run: 7 miles
- Sunday – Long Run: 13 miles
Week – 7
- Monday – Rest Day or Cross train
- Tuesday – Easy Run: 7 miles
- Wednesday—Speedwork: 8 X 800M
- Thursday– Easy Run: 6 miles
- Friday—Rest Day or Cross train
- Saturday– tempo Run: 6 miles
- Sunday – Long Run: 14 miles
Week – 8
- Monday – Rest Day or Cross train
- Tuesday – Easy Run: 7 miles
- Wednesday—Speedwork: 8 X 1K
- Thursday– Easy Run: 7 miles
- Friday—Rest Day or Cross train
- Saturday– Tempo Run: 6 miles
- Sunday – Long Run: 14 miles
Week – 9
- Monday – Rest Day or Cross train
- Tuesday – Easy Run: 7 miles
- Wednesday—Speedwork: 5 X 2K
- Thursday– Easy Run: 8 miles
- Friday—Rest Day or Cross train
- Saturday– Tempo Run: 7 miles
- Sunday – Long Run: 15 miles
Week – 10
- Monday – Rest Day or Cross train
- Tuesday – Easy Run: 7 miles
- Wednesday—Speedwork: 12 X 400M
- Thursday– Easy Run: 7 miles
- Friday—Rest Day or Cross train
- Saturday– Steady Run: 7 miles
- Sunday – Long Run: 15 miles
Week – 11
- Monday – Rest Day or Cross train
- Tuesday – Easy Run: 5 miles
- Wednesday—Speedwork: 10 X 1K
- Thursday– Easy Run: 6 miles
- Friday—Rest Day or Cross train
- Saturday– Tempo Run: 6 miles
- Sunday – Long Run: 10 miles
Week – 12
- Monday – Rest Day or Cross train
- Tuesday – Easy Run: 4 miles
- Wednesday—Speedwork: 8 X 400M
- Thursday– Easy Run: 3 miles
- Friday—Rest Day or Cross train
- Saturday– Steady Run: 3 miles
- Sunday – Half Marathon Race Day
Conclusion
Crossing the finish line of a half marathon in under 90 minutes is an exhilarating achievement that only a select few can claim.
According to my own estimates, less than 5% of all recreational half marathoners can break the coveted 90-minute barrier.
But don’t let that discourage you – with hard work, determination, and a little bit of grit, you can join the elite ranks of sub-90 half marathoners.
So, lace up your shoes, set your sights high, and prepare to conquer the road ahead.
Remember, every step you take brings you one step closer to the summit – so don’t give up until you reach the top!