Quick Answer: A 4:00 marathon requires 9:09/mile pace. A 3:30 marathon requires 8:01/mile. Enter your target time below for full mile-by-mile splits.
Marathon Pace Calculator
Generate mile-by-mile and km-by-km split tables, checkpoint times for every major distance marker, and a printable pace band you can wear on race day. Supports even splits and negative split strategies.
Calculate Your Marathon Splits
Checkpoint Times
| Mile | Split | Cumulative | Pace/Mile |
|---|
| Mile | Split | Elapsed | Mile | Split | Elapsed |
|---|
Marathon Pace Chart
Quick reference showing the required pace per mile and per km for common marathon finish times from 3:00 to 5:30.
| Finish Time | Pace / Mile | Pace / KM | Half Split | 5K Split |
|---|
Boston Marathon Qualifying Paces by Age Group
The Boston Athletic Association sets qualifying standards by age and gender. Note: in recent years, runners typically need to beat the standard by 5-6 minutes to secure entry.
| Age Group | Men BQ | Men Pace/Mile | Women BQ | Women Pace/Mile |
|---|---|---|---|---|
| 18-34 | 3:00:00 | 6:52 | 3:30:00 | 8:01 |
| 35-39 | 3:05:00 | 7:03 | 3:35:00 | 8:12 |
| 40-44 | 3:10:00 | 7:15 | 3:40:00 | 8:23 |
| 45-49 | 3:20:00 | 7:38 | 3:50:00 | 8:46 |
| 50-54 | 3:25:00 | 7:49 | 3:55:00 | 8:58 |
| 55-59 | 3:35:00 | 8:12 | 4:05:00 | 9:21 |
| 60-64 | 3:50:00 | 8:46 | 4:20:00 | 9:55 |
| 65-69 | 4:05:00 | 9:21 | 4:35:00 | 10:29 |
| 70-74 | 4:20:00 | 9:55 | 4:50:00 | 11:03 |
| 75-79 | 4:35:00 | 10:29 | 5:05:00 | 11:37 |
| 80+ | 4:50:00 | 11:03 | 5:20:00 | 12:12 |
How to Pace a Marathon
Pacing strategy can make or break your marathon. Here are the two main approaches and when to use each.
Even Split Strategy
Run the same pace for every mile from start to finish. This is the safest and most recommended strategy for first-time and intermediate marathoners.
- + Simplest to plan and execute
- + Most energy-efficient pacing pattern
- + Reduces risk of hitting the wall
- + Best for your first marathon or a new distance PR attempt
Negative Split Strategy
Run the second half of the marathon 1-3 minutes faster than the first half. This requires discipline to hold back early when you feel fresh.
- + Used by most world-record performances
- + Finish strong while others fade
- + Mentally rewarding to pass runners in the last 10K
- ! Requires experience and strong pace discipline
Key Pacing Rules
- Mile 1: Always run your first mile 10-15 seconds slower than goal pace. The adrenaline and crowds will tempt you to start fast: resist it.
- Miles 1-10: Bank nothing. Run at or slightly slower than goal pace. Early speed is repaid with interest after mile 20.
- Miles 10-20: Settle into goal pace. Take fuel at regular intervals (every 30-45 minutes). Stay mentally relaxed.
- Miles 20-26.2: This is where the marathon begins. If you ran the first half correctly, you have the energy to maintain or accelerate. Shorten your focus to one mile at a time.
Marathon Day Essentials
Recommended gear for race day, researched from manufacturer specs and verified owner reviews.
Garmin Forerunner 265
AMOLED GPS running watch with real-time pace, advanced training metrics, and race-day widgets.
- ✓Real-time pace & split alerts
- ✓Race predictor & training status
- ✓13-hour GPS battery life
GU Energy Gel Variety Pack
24-pack of GU gels in assorted flavors. 100 calories and 20mg caffeine per gel, the marathon fueling standard.
- ✓Easy to digest mid-race
- ✓Electrolytes + amino acids
- ✓Take every 45 min during marathon
SPIbelt Race Belt
Low-profile running belt for bib number, gels, phone, and keys. No bounce, no chafe, expandable pocket.
- ✓Holds 6+ gels for marathon fueling
- ✓Clip bib without safety pins
- ✓Bounce-free design
Affiliate Disclosure: Product links may earn us a commission at no additional cost to you. This helps support our free calculators.
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Shop Related 2026 Gear
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Frequently Asked Questions
What pace do I need to run a 4-hour marathon?
To finish a marathon in 4 hours, you need to average 9:09 per mile (5:41 per km). This means passing the halfway mark at approximately 2:00:00 for an even split, or 2:01-2:02 if running a slight negative split strategy.
What is a negative split in a marathon?
A negative split means running the second half of the marathon faster than the first half. For example, running the first half in 2:02 and the second half in 1:58 for a 4:00 finish. Most coaches recommend aiming for 5-15 seconds per mile faster in the second half.
What is a good marathon pace for beginners?
A good first marathon pace is typically 10:00-12:00 per mile (6:12-7:27 per km), which translates to a 4:22-5:15 finish time. The key is to run at a comfortable, conversational pace for the first 20 miles and not start too fast.
How do I calculate my marathon pace from a half marathon time?
A common method is to double your half marathon time and add 10-20 minutes. More precisely, multiply your half marathon time by 2.1 for a conservative estimate. For example, a 1:45 half marathon predicts roughly a 3:40-3:50 marathon.
What is the Boston Marathon qualifying time?
Boston Marathon qualifying (BQ) times vary by age and gender. For men 18-34, the standard is 3:00:00. For women 18-34, it is 3:30:00. Each older age group adds 5 minutes. Note that in recent years you typically need to beat the standard by 5-6 minutes to gain entry.
Should I use mile splits or kilometer splits for a marathon?
Use whichever matches the race course markers. Most US marathons mark miles, while international marathons mark kilometers. Our calculator provides both. Kilometer splits feel more frequent (41 checkpoints vs 26), which can help mentally.
What is a pace band and how do I use it?
A pace band is a small strip (often worn on the wrist) showing your target split time at each mile or kilometer marker. Print it, cut it out, and tape it to your wrist or pin it to your bib. Check it at each marker to confirm you are on pace.
How much does hitting the wall slow you down?
Hitting the wall (glycogen depletion around mile 18-22) can slow runners by 1-3 minutes per mile. Proper fueling (30-60g carbs per hour), adequate long runs in training, and conservative early pacing are the best strategies to avoid it.