Every runner wants to run faster. Whether your goal is breaking 30 minutes in a 5K or going under 4 hours in a marathon, the desire to improve is universal. The good news: speed is trainable. The bad news: there are no shortcuts. But there are proven methods that work for 99% of runners (World Athletics) (ACSM).
In this guide we give you the 12 keys that have the greatest impact on your speed, ranked by priority. Some may surprise you (spoiler: the first one has nothing to do with running fast).
The fundamental principle: run slow to run fast
Yes, you read that right. The most important paradox in running is that to run faster you need to run slower... most of the time. It's called the polarized training model, and it's what virtually every elite runner in the world uses.
The rule is simple: 80% of your weekly mileage should be at an easy pace (you can hold a normal conversation). Only the remaining 20% should be at moderate-to-hard effort (intervals, tempo, fartlek). This balance allows:
- Your aerobic base to grow week after week without accumulating excessive fatigue
- You to arrive fresh at quality sessions and give your maximum effort
- Injury risk to stay low
- Your body to have time to adapt to the speed stimulus
Keys 1-3: Build your aerobic base
1. Increase your weekly volume (gradually)
More weekly miles = better aerobic base = more sustainable speed. A runner who goes from 12 to 25 miles per week will see a significant improvement in race times, even without doing intervals. The key: don't increase by more than 10% per week to avoid injuries (research studies).
2. Include one long run per week
The long run is your most important session for building endurance. It should account for 25-30% of your weekly volume. If you run 25 miles a week, your long run would be 6-8 miles. Do it at a comfortable pace, without chasing speed. The goal is time on your feet and aerobic capacity development.
3. Run consistently
Consistency beats intensity. It's better to run 4 days a week for 12 months than to run 6 days for 3 months and then stop due to injury. The physiological adaptations that make you faster (muscle capillarization, increased mitochondria, cardiac efficiency) need months and years to develop fully.
Keys 4-6: Speed workouts
4. Intervals
Intervals are the most direct training method for improving speed. They consist of repetitions at a fast pace over a set distance with recovery breaks between them. Main types:
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- Short intervals (200m-400m): Improve pure speed and running economy. 8-12 reps with recovery equal to the work time.
- Medium intervals (600m-1000m): Improve aerobic capacity at race pace. 5-8 reps with 60-90 seconds of recovery.
- Long intervals (1500m-2000m): Improve lactate threshold. 3-5 reps with 2-3 minutes of recovery.
5. Fartlek
Fartlek ("speed play" in Swedish) is a more flexible alternative to formal intervals. It involves alternating fast and easy paces during a continuous run, without stopping. Example: 40 minutes of running including 8x1 minute hard with 2 minutes easy between each one.
It's ideal for runners who hate the track, for days when you don't feel like something structured, and as an introduction to speed work if you've never done intervals. It also works great on hilly terrain or uneven surfaces.
6. Tempo (threshold) training
The tempo run involves running at your lactate threshold pace for 20-40 minutes straight. This pace is uncomfortably sustainable: you can say a few words but not complete sentences. For most runners, it's about 15 to 30 seconds per mile slower than their 10K pace (British Journal of Sports Medicine).
This workout teaches your body to recycle lactate more efficiently, raising your anaerobic threshold. The result: you can sustain faster paces for longer without accumulating fatigue. It's a key workout for improving your 10K, half marathon and marathon times.
Keys 7-8: Strength and power
7. Strength training
If you could only add one thing to your current training to run faster, it would be strength work. Strength training improves running economy (how much energy you spend at each pace), increases stride power and dramatically reduces injury risk.
Key exercises for runners:
- Squats: The king of lower-body strength exercises. 3x8-10 reps with progressive loading.
- Deadlifts: Strengthen glutes, hamstrings and lower back. Essential for stride stability.
- Lunges: Work balance, unilateral strength and range of motion. 3x10 each leg.
- Calf raises: Your calves are the engine of your push-off. 3x15 (single-leg if you have the strength).
- Planks and variations: A strong core = better running posture = less wasted energy.
8. Hill repeats and plyometrics
Hills are strength sessions in disguise. Running uphill recruits more muscle fibres, improves push-off power and develops specific strength without needing a gym. Basic session: 6-10 reps of 60-90 seconds uphill at 6-8% gradient, jogging down easy.
Plyometrics (skipping drills, single-leg hops, box jumps) develop reactive foot power, reduce ground contact time and improve mechanical efficiency. 2-3 exercises of 8-10 reps before an interval session work as neuromuscular activation.
Keys 9-10: Running form and cadence
9. Improve your running form
Running economy (how much energy you spend at a given pace) is just as important as VO2max for your performance. Key points of good form:
- Upright posture: Slight forward lean from the ankles (not the waist). Head up, eyes forward.
- Arms: Elbows at 90 degrees, swinging forward and back (not crossing your body). Hands relaxed, never clenched into fists.
- Foot strike: Land with your foot underneath your centre of gravity, not in front. Landing ahead of your body (overstriding) acts as a brake with every step.
- Push-off: Drive powerfully from your glutes and calves. Full hip extension on each stride is what propels you forward.
10. Increase your cadence
Cadence (steps per minute) is one of the easiest metrics to improve. Many recreational runners have a cadence of 150-160 SPM. Moving up to 170-180 SPM reduces impact per stride, decreases ground contact time and improves efficiency (Runner's World).
How to increase it: don't try to take shorter steps on purpose. Instead, think "light feet" and "quick contact" with the ground. Use a metronome on your watch or app and increase your current cadence by 5% every 2-3 weeks. The change should be gradual so your body can adapt without injuries.
You can track your cadence with any GPS running watch.
Keys 11-12: Recovery and consistency
11. Recovery: where you actually improve
You don't improve while you run. You improve while you rest. Training provides the stimulus; recovery produces the adaptation. If you don't respect recovery, you're throwing away the work you've done. Pillars of good recovery:
- Sleep: 7-9 hours. This is when your body repairs tissue, consolidates adaptations and releases growth hormone. Without good sleep, there's no improvement.
- Nutrition: Post-workout protein (20-30g within 30-60 minutes), carbohydrates to replenish glycogen, adequate hydration.
- Rest days: At least 1-2 days of complete rest or very easy running per week.
- Mobility: 10-15 minutes of stretching or foam rolling post-workout. Prevents stiffness and improves range of motion.
12. Patience and long-term progression
Most runners overestimate what they can achieve in 1 month and underestimate what they can achieve in 1 year. Real, sustainable improvements require months of consistent work. Don't chase the magic workout: aim for 50 solid weeks of training per year.
Personal bests come when you stack weeks of consistent mileage, well-executed quality sessions and recovery that you actually respect. Trust the process.
Sample weekly plan to run faster
Here's a typical week for an intermediate runner logging 22-28 miles per week who wants to improve their 10K time:
- Monday: Rest or very easy jog 20 min + mobility
- Tuesday: Intervals — 6x1000m at 10K pace, 90 sec recovery (includes 15 min warm-up + 10 min cool-down)
- Wednesday: Easy run 40 min (zone 2) + gym strength session 30 min
- Thursday: Fartlek — 45 min including 8x90 sec hard with 2 min easy
- Friday: Rest or recovery jog 25 min
- Saturday: Long run 60-70 min at comfortable pace (zone 2) + strength 30 min
- Sunday: Easy run 30-35 min or full rest
Frequently asked questions
How long does it take to run faster?
With structured training, you'll notice improvements in 4-6 weeks. Dropping your time significantly (30 sec to 1 min in a 5K) usually requires 8-12 weeks of specific training. Improvement is faster at the start and slows down with experience.
What type of intervals are best for getting faster?
It depends on the target distance. For 5K: short intervals (400m-800m). For 10K and half marathon: medium-long intervals (1000m-2000m). For marathon: sustained tempo blocks. Ideally, combine different types throughout the week and the training cycle.
Do I need to lift weights to run faster?
Yes, strength training is one of the highest-impact factors. It improves running economy, stride power and reduces injury risk. 2-3 sessions of 30 minutes per week are enough. You don't need extreme loads.
What is the ideal running cadence?
The general benchmark is 170-180 steps per minute, but it varies by height and pace. What matters is gradually increasing your current cadence by 5-10%. Less ground contact time = greater efficiency.
Does running slow help me run faster?
Yes. 80% of your training should be at an easy pace to build your aerobic base. These easy runs improve capillarization, increase mitochondria and allow you to recover for quality sessions. Without an aerobic base, intervals won't produce sustainable improvements.
