Key takeaways
Running faster comes mainly from months of consistent, mostly easy running plus one or two harder sessions a week
Intervals raise VO2max, threshold runs raise the pace you can hold, and strength training makes each stride cheaper
No trick makes you fitter in a day, but pacing, a warm-up and rest before a race help you use the fitness you have
Most advice on how to run faster is either too vague ("just run more") or too clever (one secret drill). The research on distance running points to a short list of things that matter, roughly in order of importance. Here they are, with a 4-week block to get started.
How to run faster: what actually determines speed
Distance running performance rests on three physiological pillars, as outlined in a well-known review by Midgley, McNaughton and Jones (2007):
- VO2max: how much oxygen your body can use (the ceiling on aerobic power).
- Lactate threshold: the share of that capacity you can sustain.
- Running economy: how much oxygen each kilometre costs.
Every useful training method improves one or more of these. Here is how they fit together.
| Lever | What it improves | How much per week |
|---|---|---|
| Easy running | Aerobic base, durability, economy | Most of your running time |
| Intervals | VO2max | 1 session |
| Threshold runs | Lactate threshold, sustainable pace | 1 session |
| Strides | Fast mechanics, economy | 2–3 × 4–6 short reps |
| Strength training | Running economy, injury resilience | 2 short sessions |
| Sleep and recovery | Lets adaptations happen | Every night |
Run consistently and mostly easy
A 2022 review of world-class distance runners by Haugen and colleagues found that at least 80% of their running is done at low intensity all year round, with only 2 to 3 interval or threshold sessions a week. Most of them trained systematically for 8 to 10 years before reaching an international level. You don't need their volume, but the pattern holds: frequent, mostly easy running over many months beats sporadic hard efforts. Read more in 80/20 training.
"Easy" means conversational: you can talk in full sentences. For many people that feels embarrassingly slow at first. Find your zones with the heart rate zone calculator.
How to run faster and longer
To run longer, build volume gradually: add a few kilometres or one extra short run every week or two, and take an easier week every third or fourth week. A weekly long run at easy pace, building towards a commonly used guide of about a quarter to a third of your weekly distance, extends endurance. Steady volume and sensible progression matter more than any single workout.
Add intervals and threshold work
- Intervals near 90 to 95% of max heart rate raise VO2max. In the classic Helgerud et al. (2007) trial, the 4×4 method raised VO2max by about 7% in eight weeks. Try the Norwegian 4×4 or one of the VO2max workouts.
- Threshold runs at a "comfortably hard" effort, around one-hour race pace, raise the speed you can hold for a long time. See lactate threshold training. Elite Norwegian runners take this to the extreme with the Norwegian double threshold method; most amateurs need far less.
Strength training and running economy
Strength work makes each stride cheaper. A meta-analysis by Balsalobre-Fernández et al. (2016) found a large improvement in running economy in highly trained runners, and Denadai et al. (2017) found that both explosive and heavy programmes improved economy by about 4% on average. Two 20 to 30 minute sessions a week of squats, deadlifts, calf raises and hops is enough (see strength training for runners). Add strides after easy runs for regular practice at fast running.
How to run faster without getting tired
Feeling exhausted early in a run usually comes down to one of four things:
- Starting too fast. Run the first kilometre slower than your target, then settle in.
- Running every day at a moderate, medium-hard effort. It leaves you too tired to run fast on hard days and too slow on easy days. Separate easy and hard.
- A low threshold. Threshold training lets you run faster before lactate builds up.
- Poor fuelling on runs longer than about 75 to 90 minutes. Take in carbohydrates during long runs and races.
Body weight, sleep and recovery
VO2max is expressed per kilogram, so losing excess body fat can make running easier (see VO2max and body weight). But eating too little harms recovery and health, so aim for slow changes, not crash diets. Sleep matters too: a review by Fullagar et al. (2015) found that sleep loss impairs endurance, submaximal strength and reaction time. Aim for 7 to 9 hours. Persistent fatigue and a rising resting heart rate can be signs of overtraining.
How to run faster: a 4-week starter block
For runners who already run three times a week. Warm up for 10 minutes before hard sessions.
| Week | Interval day | Threshold day | Easy runs | Long run |
|---|---|---|---|---|
| 1 | 5 × 2 min hard, 2 min jog | 3 × 5 min comfortably hard, 2 min jog | 1–2 × 30 min + 4 strides | 50 min easy |
| 2 | 4 × 3 min hard, 2 min jog | 3 × 6 min, 2 min jog | 2 × 30–35 min + 5 strides | 55 min easy |
| 3 | 4 × 4 min hard, 3 min jog | 3 × 8 min, 2 min jog | 2 × 35 min + 6 strides | 60–65 min easy |
| 4 (easier) | 3 × 3 min hard, 2 min jog | 20 min steady, moderate | 2 × 30 min + 4 strides | 45 min easy, then a 5k test |
Add two short strength sessions on easy days. Then repeat the block with slightly more volume. Use your 5k result in the VO2max running calculator to set new training paces. On a treadmill, use 1% incline (see treadmill vs outdoor running).
Can you run faster in 1 day?
No. Gains in VO2max, threshold and economy take weeks to months. What you can change on race day is how well you use your fitness: rest more in the days before, warm up with easy running and strides, pace evenly, and consider caffeine if you tolerate it (see caffeine and nitrate). More guides are in VO2max for running.
Safety: if you are new to exercise, have heart disease or high blood pressure, or get chest pain or dizziness when running, get medical advice before hard training.
Frequently asked questions
How can I run faster?
Run more often, mostly at an easy pace, and add one or two harder sessions a week, such as intervals or threshold runs. Lift weights twice a week, sleep well and increase training gradually for several months.
How do I run faster and longer?
Build weekly volume slowly with a weekly long run at a conversational pace, and add a threshold session that teaches you to hold a strong pace. Both endurance and speed improve together over 8 to 12 weeks.
How do I run faster without getting tired?
Start slower than you think, keep most runs easy, and raise your threshold pace with steady tempo or cruise intervals. Better running economy from strength training and strides also means each kilometre costs less energy.
Can you run faster in one day?
Not by getting fitter, because adaptations take weeks. On the day you can only use your fitness better, with a proper warm-up, even pacing, good rest beforehand and, for some people, caffeine.
Sources
- Midgley AW, McNaughton LR, Jones AM. Training to enhance the physiological determinants of long-distance running performance: can valid recommendations be given to runners and coaches based on current scientific knowledge? Sports Med, 2007.
- Haugen T, et al. The training characteristics of world-class distance runners: an integration of scientific literature and results-proven practice. Sports Med Open, 2022.
- Helgerud J, et al. Aerobic high-intensity intervals improve VO2max more than moderate training. Med Sci Sports Exerc, 2007.
- Balsalobre-Fernández C, et al. Effects of strength training on running economy in highly trained runners: a systematic review with meta-analysis of controlled trials. J Strength Cond Res, 2016.
- Denadai BS, et al. Explosive training and heavy weight training are effective for improving running economy in endurance athletes: a systematic review and meta-analysis. Sports Med, 2017.
- Fullagar HHK, et al. Sleep and athletic performance: the effects of sleep loss on exercise performance, and physiological and cognitive responses to exercise. Sports Med, 2015.