מחשבון קצב ריצה
חשב את קצב הריצה שלך לכל ק"מ או מייל. מושלם לתכנון אימונים.
איך להשתמש במחשבון זה
- הזן Distance (km)
- הזן Hours
- הזן Minutes
- הזן Seconds
- לחץ על כפתור חשב
- קרא את התוצאה המוצגת מתחת למחשבון
How Running Pace, Speed, and Time Relate
Three variables govern every run: Pace, Distance, and Time. Know any two and you can calculate the third:
- Pace = Time ÷ Distance (e.g., 60 minutes ÷ 10 km = 6:00 min/km)
- Time = Pace × Distance (e.g., 5:30 min/km × 21.1 km = 1:56:05)
- Distance = Time ÷ Pace (e.g., 45 minutes ÷ 6:00 min/km = 7.5 km)
Pace and speed are inversely related: Speed (km/h) = 60 ÷ Pace (min/km). A pace of 5:00 min/km equals 12 km/h. A pace of 6:00 min/km equals 10 km/h.
Converting between min/km and min/mile: Multiply pace in min/km by 1.60934, or divide pace in min/mile by 1.60934. A 6:00 min/km pace equals 9:39 min/mile.
Race Pace Chart: Common Finish Times
Use this reference table to find the exact pace you need to hit your goal finish time:
| Goal Time | Race | Required Pace (min/km) | Required Pace (min/mile) |
|---|---|---|---|
| 25:00 | 5K | 5:00 | 8:03 |
| 30:00 | 5K | 6:00 | 9:39 |
| 45:00 | 10K | 4:30 | 7:14 |
| 1:00:00 | 10K | 6:00 | 9:39 |
| 1:45:00 | Half Marathon | 4:59 | 8:01 |
| 2:00:00 | Half Marathon | 5:41 | 9:09 |
| 3:30:00 | Marathon | 4:58 | 7:59 |
| 4:00:00 | Marathon | 5:41 | 9:09 |
| 4:30:00 | Marathon | 6:24 | 10:18 |
| 5:00:00 | Marathon | 7:06 | 11:26 |
Pace Zones for Training
Effective training requires running at different intensities. Here are the five standard training pace zones, defined relative to your 5K race pace:
| Zone | Name | Intensity | Pace vs 5K Race Pace | Purpose |
|---|---|---|---|---|
| Zone 1 | Easy / Recovery | 60–70% max HR | +2:00 to +3:00 min/km | Recovery, base building |
| Zone 2 | Aerobic / Long Run | 70–80% max HR | +1:00 to +2:00 min/km | Endurance, fat burning |
| Zone 3 | Tempo | 80–87% max HR | +0:15 to +0:45 min/km | Lactate threshold |
| Zone 4 | Threshold / Race Pace | 87–92% max HR | ~5K race pace | Race simulation |
| Zone 5 | VO2 Max / Interval | 92–100% max HR | Faster than 5K pace | Speed, VO2 max |
The 80/20 rule: Research by exercise scientist Dr. Stephen Seiler shows that elite and recreational runners who spend ~80% of their training in Zones 1–2 and only ~20% in Zones 3–5 improve faster than those who train hard every day.
What Is a Good Running Pace?
"Good" pace is highly personal and depends on age, fitness level, and goals. Here are typical reference points:
| Level | 5K Time | Average Pace (min/km) | Average Pace (min/mile) |
|---|---|---|---|
| Beginner (first 5K) | 35–45 min | 7:00–9:00 | 11:15–14:30 |
| Recreational runner | 25–35 min | 5:00–7:00 | 8:03–11:15 |
| Club runner | 20–25 min | 4:00–5:00 | 6:26–8:03 |
| Sub-elite | 15–20 min | 3:00–4:00 | 4:50–6:26 |
| Elite / Olympic | Under 14 min | Under 2:50 | Under 4:33 |
For beginners, aim for a pace where you can hold a conversation. This "conversational pace" keeps you in Zone 1–2, building aerobic base without risking injury or burnout. Most beginners improve rapidly — a 9:00 min/km runner can often reach 7:00 min/km within 3 months of consistent training.
Negative Splitting: The Smartest Race Strategy
A negative split means running the second half of a race faster than the first. It is the most consistent strategy used by world record holders across distances from 800m to the marathon.
Why it works: Starting too fast (positive splitting) depletes glycogen and causes lactic acid buildup, leading to a dramatic slowdown in the final miles. A conservative start preserves glycogen, allowing you to accelerate when others fade.
Example for a 4:00 marathon (5:41 min/km average):
- Positive split (common mistake): First half in 1:52, second half in 2:08 (total 4:00, but suffered greatly)
- Even split: Both halves in 2:00 exactly
- Negative split: First half in 2:02, second half in 1:58 — finished strong, total 4:00
Aim to run the first half 1–2% slower than goal pace. For a 4:00 marathon, start at 5:45–5:50 min/km rather than exactly 5:41.
How to Improve Your Running Pace
Speed improvement comes from a combination of physiological adaptations, each requiring different training stimuli:
- VO2 max intervals (1000m repeats at 5K pace): Increases maximum oxygen uptake — the ceiling on aerobic performance. Example: 5 × 1000m at race pace with 2-minute jog recovery.
- Tempo runs (20–40 min at threshold pace): Raises your lactate threshold — the pace at which lactic acid accumulates faster than your body can clear it. Run at a "comfortably hard" effort, about 85% max HR.
- Long slow runs (weekly long run at Zone 2 pace): Builds mitochondrial density, fat-burning efficiency, and muscular endurance. The single most impactful weekly session for marathon and half-marathon runners.
- Strides and hill sprints: Short, fast efforts (20–30 seconds) improve running economy and neuromuscular efficiency without the fatigue of full interval sessions.
- Strength training: Runners who add 2 sessions per week of lower-body strength training improve running economy by 3–5%, translating directly to faster pace at the same effort level.
Most runners improve fastest by running more miles at easy pace before adding intensity. If you are under 30–40 miles per week, adding volume will improve pace more than adding speed workouts.
Frequently Asked Questions
What is a good running pace for beginners?
A comfortable pace for beginners is typically 7:00–9:00 minutes per kilometer (11:15–14:30 per mile). Focus on running at a conversational pace — if you can't speak in full sentences, slow down. Speed will come naturally with consistency.
How do I improve my running pace?
The most effective methods are: (1) run more miles per week at easy pace, (2) add one weekly tempo run at about 85% max heart rate, (3) include interval training (e.g., 5×1000m at 5K pace), and (4) add lower-body strength training twice per week. Most improvement comes from consistent easy mileage.
What pace do I need for a sub-4-hour marathon?
A sub-4-hour marathon requires an average pace of approximately 5:41 per km (9:09 per mile) over the full 42.195 km. Given typical race-day fatigue, train at 5:45–5:50 per km to build margin.
How do I convert pace from min/km to min/mile?
Multiply your min/km pace by 1.60934. For example, 5:00 min/km × 1.60934 = 8:03 min/mile. To go the other way, divide min/mile by 1.60934: 9:00 min/mile ÷ 1.60934 = 5:35 min/km.
What is the difference between pace and speed?
Pace is the time taken to cover a unit distance (e.g., 5:30 per km). Speed is the distance covered per unit time (e.g., 10.9 km/h). They are inversely related: Speed (km/h) = 60 ÷ Pace (min/km). A 6:00 min/km pace equals exactly 10 km/h.
What pace should my long run be?
Your long run should be 60–90 seconds per km slower than your goal marathon pace, or about 65–70% of maximum heart rate. This keeps you in the aerobic zone for building endurance without accumulating fatigue. For a 5:00 min/km marathon runner, long runs at 6:00–6:30 min/km are appropriate.
What is a negative split and why does it matter?
A negative split means running the second half of a race faster than the first. It is the strategy used by most world record-setting performances. Starting conservatively preserves glycogen and avoids early lactic acid buildup, allowing you to accelerate in the second half when most competitors are fading.
How accurate is GPS for measuring pace?
Consumer GPS watches are typically accurate to within 1–2% for distance, which means paces can be off by 5–10 seconds per km. Tunnels, tall buildings, and dense tree cover increase error. For track workouts, use the measured distance rather than GPS for the most accurate pace data.
"Appropriate pacing strategy is one of the most critical determinants of distance running performance. Research consistently demonstrates that starting at an even pace or slightly slower and accelerating in the second half produces superior outcomes compared to positive splits."
💡 האם ידעת?
- The current men's marathon world record is 2:00:35 (Kelvin Kiptum, 2023) — a blistering pace of just 2:51 per kilometer.
- Athletes from Kenya's Rift Valley and Ethiopia's highlands hold the vast majority of all long-distance world records, partly due to altitude training and genetics.
- The concept of measuring pace in foot races dates to the ancient Greek Olympics in 776 BC.
עודכן לאחרונה: March 2026