Running Pace Calculator UK 2025 | Marathon, Half Marathon & Parkrun Pace Charts
Free UK running pace calculator. Calculate your pace per km or mile, predict race times for parkrun, 5K, 10K, half marathon, and marathon.
Last updated: February 2026
Running Pace Calculator UK
Calculate your running pace, predict race times for parkrun, 5K, 10K, half marathon, and marathon. Includes UK-specific training zones and pace charts.
Calculate Your Running Pace
Enter your distance and time to calculate your pace per kilometre and per mile.
Race Time Predictions
Based on your current pace, here are your predicted finish times:
Race Time Predictor
Enter a recent race result to predict your times for other distances using the Riegel formula.
About the Riegel Formula
This calculator uses the Riegel formula, developed by Peter Riegel in 1977 and still widely used today. The formula accounts for the fact that as race distance increases, your average pace naturally slows due to accumulated fatigue.
Formula: T2 = T1 × (D2/D1)^1.06
Race Splits Calculator
Calculate your kilometre or mile splits for a target race time.
Pacing Strategy Tips
- Even Splits: Maintain consistent pace throughout - recommended for most runners
- Negative Split: Run the second half faster - elite strategy requiring discipline to hold back early
- Positive Split: Start fast and slow down - common for beginners but increases injury risk
UK Half Marathon Pace Chart
Find your target pace for popular half marathon finish times. The Great North Run, Great Manchester Run Half, and Bath Half Marathon are popular UK events.
| Finish Time | Pace (min/km) | Pace (min/mile) | Level |
|---|---|---|---|
| 1:15:00 | 3:33 | 5:43 | Elite |
| 1:30:00 | 4:16 | 6:52 | Very Fast |
| 1:40:00 | 4:44 | 7:38 | Advanced |
| 1:45:00 | 4:58 | 8:00 | Advanced |
| 1:50:00 | 5:12 | 8:23 | Intermediate+ |
| 2:00:00 | 5:41 | 9:09 | Popular Goal |
| 2:10:00 | 6:09 | 9:54 | Intermediate |
| 2:15:00 | 6:23 | 10:17 | Beginner+ |
| 2:30:00 | 7:06 | 11:27 | Beginner |
| 3:00:00 | 8:31 | 13:44 | Run/Walk |
UK Marathon Pace Chart
Pace requirements for major UK marathons including London Marathon, Manchester Marathon, and Brighton Marathon.
| Finish Time | Pace (min/km) | Pace (min/mile) | Level |
|---|---|---|---|
| 2:30:00 | 3:33 | 5:43 | Elite |
| 3:00:00 | 4:16 | 6:52 | Advanced |
| 3:30:00 | 4:59 | 8:01 | Good For Age |
| 4:00:00 | 5:41 | 9:09 | Popular Goal |
| 4:30:00 | 6:24 | 10:18 | Intermediate |
| 5:00:00 | 7:06 | 11:27 | Beginner |
| 5:30:00 | 7:49 | 12:35 | First Timer |
| 6:00:00 | 8:31 | 13:44 | Run/Walk |
London Marathon Good For Age (GFA) Times 2025
The London Marathon offers guaranteed entry for runners who achieve "Good For Age" qualifying times:
- Men 18-39: Sub 3:00
- Women 18-39: Sub 3:45
- Men 40-49: Sub 3:10
- Women 40-49: Sub 3:55
- Times become more lenient with age categories up to 80+
UK Parkrun Pace Guide
Parkrun is a free, weekly, community event where you can walk, jog, run, or volunteer. Over 700 events take place across the UK every Saturday morning at 9am.
| Finish Time | Pace (min/km) | Pace (min/mile) | Description |
|---|---|---|---|
| 16:00 | 3:12 | 5:09 | Course Record Level |
| 18:00 | 3:36 | 5:48 | Club Runner |
| 20:00 | 4:00 | 6:26 | Competitive |
| 22:00 | 4:24 | 7:05 | Fast Amateur |
| 25:00 | 5:00 | 8:03 | Strong Runner |
| 28:00 | 5:36 | 9:01 | UK Average |
| 30:00 | 6:00 | 9:39 | Regular Runner |
| 35:00 | 7:00 | 11:16 | Improver |
| 40:00 | 8:00 | 12:52 | Beginner |
| 45:00+ | 9:00+ | 14:29+ | Walk/Jog |
Parkrun Tips for UK Runners
- Register for free at parkrun.org.uk to get your barcode
- Arrive by 8:50am for the pre-run briefing
- Most parkruns are on grass or trail - adjust expectations vs road running
- Volunteer at least once - it's part of the parkrun community spirit
- Junior parkrun (2K, ages 4-14) runs on Sundays at 9am
Running Training Zones
Understanding training zones helps you train more effectively. Most running (about 80%) should be done in Zone 2 to build your aerobic base.
Zone 1
50-60% Max HR
Recovery
Very easy, walking/slow jog
Zone 2
60-70% Max HR
Aerobic Base
Conversational pace
Zone 3
70-80% Max HR
Tempo
Comfortably hard
Zone 4
80-90% Max HR
Threshold
Hard, sustainable 30-60 min
Zone 5
90-100% Max HR
VO2 Max
Intervals only
The 80/20 Rule
Research shows that elite runners spend approximately 80% of their training at low intensity (Zone 2) and only 20% at high intensity (Zones 4-5). Many recreational runners do the opposite, running too hard too often, which leads to burnout and injury.
UK Running Training Guidelines
Beginner 5K Training Plan (Couch to 5K)
The NHS Couch to 5K programme is the UK's most popular beginner running programme, taking you from zero to 5K in 9 weeks.
| Week | Sessions | Total Running |
|---|---|---|
| 1-2 | Run 1 min, walk 1.5 min × 8 | 8 min per session |
| 3-4 | Run 3 min, walk 3 min × 4 | 12 min per session |
| 5-6 | Run 5 min, walk 2.5 min × 3 | 15 min per session |
| 7-8 | Run 10-20 min continuous | Up to 20 min |
| 9 | Run 30 min / 5K continuous | 30 min / 5K |
Weekly Mileage Guidelines
| Goal Race | Beginner Weekly Mileage | Intermediate Weekly Mileage | Advanced Weekly Mileage |
|---|---|---|---|
| 5K / Parkrun | 15-20 km | 25-35 km | 40-60 km |
| 10K | 20-30 km | 35-50 km | 50-80 km |
| Half Marathon | 25-40 km | 40-60 km | 60-100 km |
| Marathon | 35-50 km | 50-80 km | 80-150 km |
How the Running Pace Works
This calculator handles date and time computations using the standard Gregorian calendar. Date calculations must account for varying month lengths (28-31 days), leap years (every 4 years, except centuries not divisible by 400), and UK-specific considerations like bank holidays and working day calculations.
In the UK, date formats follow the day/month/year convention (DD/MM/YYYY), which differs from the American month/day/year format. This tool uses the UK format throughout to avoid confusion.
Key Information
The UK has 8 permanent bank holidays in England and Wales (9 in Scotland, 10 in Northern Ireland). A standard UK working year is typically 252 days (365 minus 104 weekend days minus 8 bank holidays, plus 1 day adjustment). The minimum statutory annual leave entitlement is 28 days (5.6 weeks) for full-time employees, which can include bank holidays at the employer's discretion.
Example Calculation
Calculating working days between 1 January 2026 and 31 March 2026: there are 90 calendar days, minus 26 weekend days and 2 bank holidays (New Year's Day and Good Friday), giving 62 working days. This is useful for project planning, notice periods, and leave calculations.
Source: Based on UK calendar and bank holiday data. Last updated March 2026.
Frequently Asked Questions
For UK beginners, a comfortable running pace is typically 6:30-7:30 min/km (10:30-12:00 min/mile). The average parkrun finish time in the UK is around 28-30 minutes for 5K, which equates to approximately 5:45-6:00 min/km.
When starting out, focus on completing the distance rather than speed. You should be able to hold a conversation while running (the "talk test"). If you're gasping for breath, slow down. Most beginners benefit from a run/walk approach initially.
To improve your parkrun 5K time:
- Run consistently: 3-4 times per week, with most runs at easy pace
- Include one interval session: e.g., 6×400m at 5K race pace with 90 seconds recovery
- Add a weekly tempo run: 20 minutes at your target parkrun pace
- Build your long run: Gradually increase to 8-10K once per week
- Join a running club: Many UK clubs offer free weekly sessions
Most runners see significant improvements within 8-12 weeks of structured training. Aim for 5-10% improvement per training block.
Long runs should be done at a comfortable, conversational pace - typically 60-90 seconds per kilometre slower than your race pace. For example:
- If your 5K pace is 5:00/km, your long run pace should be around 5:45-6:00/km
- If your half marathon pace is 5:30/km, your long run pace should be around 6:15-6:45/km
The purpose of long runs is to build aerobic endurance, not speed. Running too fast on long runs is one of the most common training mistakes and can lead to overtraining and injury.
Most GPS running watches (Garmin, Polar, COROS, Apple Watch) automatically calculate and display your pace. However, you can also calculate it manually:
- Pace = Total Time ÷ Distance
- Example: 30 minutes for 5K = 30 ÷ 5 = 6:00 min/km
- To convert to min/mile, multiply by 1.609: 6:00 × 1.609 ≈ 9:39 min/mile
Note that GPS pace can be inaccurate in urban areas with tall buildings, dense woodland, or during the first few minutes of your run before the watch locks onto satellites.
Pace is how long it takes to cover a distance (minutes per km or mile). Speed is how much distance you cover in a time period (km/h or mph).
- A pace of 5:00 min/km equals a speed of 12 km/h
- A pace of 6:00 min/km equals a speed of 10 km/h
- A pace of 8:00 min/km equals a speed of 7.5 km/h
Runners typically use pace (min/km) while cyclists typically use speed (km/h). This is because running pace changes more noticeably with effort changes.
For most recreational runners, running every day is not recommended. Rest days are essential for:
- Muscle recovery: Running causes micro-tears in muscles that need time to repair
- Glycogen replenishment: Your body needs to restore energy reserves
- Injury prevention: Overuse injuries are the most common running injuries
Recommended frequency:
- Beginners: 3 runs per week with at least one rest day between runs
- Intermediate: 4-5 runs per week
- Advanced: 5-7 runs per week (experienced runners only)
On rest days, you can do low-impact activities like walking, swimming, or yoga.
A beginner marathon training plan typically takes 16-20 weeks and requires:
- Base fitness: Be able to comfortably run 5K before starting
- Weekly runs: 3-4 runs per week minimum
- Long runs: Gradually build up to 32-35km (20-22 miles)
- Total weekly mileage: Peak at 50-65km per week
- Taper: Reduce mileage 2-3 weeks before race day
Popular UK marathon training resources include:
- Runners World UK training plans
- Official London Marathon training guides
- UK Athletics running clubs with marathon groups
First-time marathoners should aim to finish rather than set time goals.
Before short runs (under 60 minutes): You may not need to eat anything, or have a small snack like a banana 30-60 minutes before.
Before long runs or races:
- Eat a carbohydrate-rich meal 2-3 hours before
- Avoid high-fibre, fatty, or spicy foods
- Good options: porridge, toast with jam, banana, rice cakes
- Stay hydrated but don't overdrink
Race day tip: Never try new foods on race day - stick to what you've practised in training.
Expert Reviewed — This calculator is reviewed by our team of financial experts and updated regularly with the latest UK tax rates and regulations. Last verified: February 2026.
Last updated: February 2026 | Verified with latest UK rates
Pro Tips for Accurate Results
- Double-check your input values before calculating
- Use the correct unit format (metric or imperial)
- For complex calculations, break them into smaller steps
- Bookmark this page for quick future access
Understanding Your Results
Our Pace Calculator provides:
- Instant calculations - Results appear immediately
- Accurate formulas - Based on official UK standards
- Clear explanations - Understand how results are derived
- 2025/26 updated - Using current rates and regulations
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