What pace do I need for a sub-4 marathon?

If you are aiming for a sub-4 marathon, you will want to lock into an average pace of about 5:41 per kilometer. This steady rhythm brings you to halfway at exactly 2:00:00 and past the 30 km mark at 2:50:38. Settling into this pace early is usually the best way to feel strong in those final miles.

What pace is a sub-3:30 or sub-4:30 marathon?

A sub-3:30 marathon needs roughly 4:58 per kilometer, while a sub-4:30 needs about 6:23 per kilometer. If you are going for a sub-3:00, you are looking at 4:15 per kilometer. You can set your exact goal time in the calculator to see the precise pace and your full split table.

Is even pacing or a negative split better?

For most of us, even pacing is the safest bet. It spreads the work out nicely and helps avoid that dreaded wall. Running a negative split, where you run the second half faster, feels amazing but takes serious discipline and endurance. A good approach is to start with an even pace, then speed up slightly after 30 km if your legs are feeling great.

How accurate is a marathon pace plan?

The math itself is exact. Your average pace is your goal time divided by 42.195 km. However, race day is unpredictable. Heat, hills, wind, your fueling, and your training all play a part. Treat your calculated splits as a helpful guide rather than a strict guarantee, and always adjust to how your body actually feels on the day.

Why should I not bank time early in the race?

It is so tempting to run faster than your goal pace early in the race when you feel fresh, but banking time almost always backfires. Those faster early miles burn through your energy reserves too quickly. You usually end up losing much more time in the final 10 kilometers than you saved at the start. Staying patient always pays off.

Can I share or print my marathon splits?

Absolutely. You can use the share button to copy a link that reopens your exact plan, or copy the splits to paste into your notes. You can also print a pace band, which gives you a compact strip of your checkpoints to carry on race day.

Pace Calculators

Marathon Pace Calculator

Turn your marathon goal into a clear race-day plan. Get your average pace, kilometer-by-kilometer splits, and the exact checkpoints you need to confidently hit your target.

Marathon 42.195 km

Goal time

hh:mm:ss

Course

Strategy

Split interval

Buffer

sec

Bank a few seconds per km for aid stations, a toilet stop, or GPS overrun.

Copied Link copied Copy failed, please select and copy manually.

Average pace

5:41 /km

km/h

10.5

mph

6.6

Halfway

2:00:00

Finish

4:00:00

Copied Link copied Copy failed, please select and copy manually.

Next Tokyo Marathon: March 7, 2027

A flat, fast course with a net downhill in the first 6 km. Even pacing is fastest here, so do not bank time on the early descent. Expect a cold race morning near 6°C.

Visit the official Tokyo Marathon 2027 site

Race checkpoints

Your target clock time at the markers that matter most on race day.

Race checkpoints
Marker	Target time
Halfway	2:00:00
30 km	2:50:38
35 km	3:19:05
40 km	3:47:31
Finish	4:00:00

Splits

Every 5 km or 5 mi is marked as a quick race-day checkpoint.

Splits
Split	Pace	Elapsed
1 km	5:41	5:41
2 km	5:41	11:23
3 km	5:41	17:04
4 km	5:41	22:45
5 km	5:41	28:26
6 km	5:41	34:08
7 km	5:41	39:49
8 km	5:41	45:30
9 km	5:41	51:11
10 km	5:41	56:53
11 km	5:41	1:02:34
12 km	5:41	1:08:15
13 km	5:41	1:13:57
14 km	5:41	1:19:38
15 km	5:41	1:25:19
16 km	5:41	1:31:00
17 km	5:41	1:36:42
18 km	5:41	1:42:23
19 km	5:41	1:48:04
20 km	5:41	1:53:45
21 km	5:41	1:59:27
22 km	5:41	2:05:08
23 km	5:41	2:10:49
24 km	5:41	2:16:31
25 km	5:41	2:22:12
26 km	5:41	2:27:53
27 km	5:41	2:33:34
28 km	5:41	2:39:16
29 km	5:41	2:44:57
30 km	5:41	2:50:38
31 km	5:41	2:56:19
32 km	5:41	3:02:01
33 km	5:41	3:07:42
34 km	5:41	3:13:23
35 km	5:41	3:19:05
36 km	5:41	3:24:46
37 km	5:41	3:30:27
38 km	5:41	3:36:08
39 km	5:41	3:41:50
40 km	5:41	3:47:31
41 km	5:41	3:53:12
42 km	5:41	3:58:53
42.2 km	5:41	4:00:00

A marathon is a long day, and having a solid plan takes a lot of the stress away. This calculator turns your goal time into a clear, reliable roadmap so you know exactly what to expect on race day.

Just enter your target finish time below, or pick a common goal like サブ4. You can adjust your pacing strategy based on how you prefer to race, and then check out your splits. The calculator defaults to kilometers, but you can easily switch to miles if that is what you use in training.

How marathon pace works

average pace = goal time ÷ 42.195 km

Finding your average pace is simply a matter of dividing your goal time by the official marathon distance of 42.195 kilometers. For example, a 4:00:00 goal is 14,400 seconds. Divide that by 42.195, and you get 5:41 per kilometer. All the pacing strategies here keep this overall average but slightly shift where you put in the most effort.

Common marathon goal paces

Sometimes it helps to just see the numbers up front. Here are the average paces you need for some of the most common marathon goals:

Sub-3:00: 4:15 per km
Sub-3:30: 4:58 per km
Sub-4:00: 5:41 per km
Sub-4:30: 6:23 per km
Sub-5:00: 7:06 per km

Remember that a marathon is an exercise in patience. Try to view your goal pace as a comfortable rhythm you settle into, rather than a strict number you have to force from the very first step.

Running the Tokyo Marathon

If you are toeing the line at the Tokyo Marathon, you are in for an incredible experience on one of the flattest courses in the world. Because the route is so flat, an even pacing strategy is usually your best friend here.

There are a few local details that can make or break your race day. The first six kilometers are a net downhill. With the adrenaline and the crowds, you will likely feel amazing and want to push the pace. Try your best to hold back. Do not bank time on this early descent. Just let gravity help you maintain your goal pace effortlessly and save that energy for the final stretch.

The course has several out-and-back sections with 180-degree turnaround points, especially around Nihonbashi and Asakusa. These turns can break your rhythm slightly, so use them as mental reset points to check your posture and relax your shoulders.

Race mornings in early March are typically cold, often hovering around 6°C at the start, which is actually perfect for marathon running. Just be ready for it to warm up as the day goes on, and prepare for potential headwinds on the wider avenues in the second half.

A local group run is an excellent way to practice your race pace before the big day. Our free weekly email rounds up running events across Tokyo, and our club directory can help you find people training at your exact pace.

Keep running in Tokyo

Get a free weekly email of upcoming running events across Tokyo.

How to use this tool

Set your goal time

Enter your target finish time, or tap one of the common presets like sub-4. The calculator is already locked to the official marathon distance of 42.195 km.
Choose a pacing strategy

Keep the even pacing option for a steady effort, or pick a negative or conservative split if that fits your race plan. You can also add an optional buffer for aid stations.
Check your splits and checkpoints

Review your average pace, your target times at halfway and major checkpoints, and the full table of splits to keep you on track.

Even pace vs. negative split

On a flat course like Tokyo, an even pacing strategy is the most reliable route to your goal.

Two ways to distribute your marathon effort
Strategy	How it runs	Best for
Even pace	The same pace from start to finish	Most runners, and any first marathon
Negative split	Second half slightly faster than the first	Experienced runners with strong endurance

Sources

FAQ

What pace do I need for a sub-4 marathon?: If you are aiming for a sub-4 marathon, you will want to lock into an average pace of about 5:41 per kilometer. This steady rhythm brings you to halfway at exactly 2:00:00 and past the 30 km mark at 2:50:38. Settling into this pace early is usually the best way to feel strong in those final miles.
What pace is a sub-3:30 or sub-4:30 marathon?: A sub-3:30 marathon needs roughly 4:58 per kilometer, while a sub-4:30 needs about 6:23 per kilometer. If you are going for a sub-3:00, you are looking at 4:15 per kilometer. You can set your exact goal time in the calculator to see the precise pace and your full split table.
Is even pacing or a negative split better?: For most of us, even pacing is the safest bet. It spreads the work out nicely and helps avoid that dreaded wall. Running a negative split, where you run the second half faster, feels amazing but takes serious discipline and endurance. A good approach is to start with an even pace, then speed up slightly after 30 km if your legs are feeling great.
How accurate is a marathon pace plan?: The math itself is exact. Your average pace is your goal time divided by 42.195 km. However, race day is unpredictable. Heat, hills, wind, your fueling, and your training all play a part. Treat your calculated splits as a helpful guide rather than a strict guarantee, and always adjust to how your body actually feels on the day.
Why should I not bank time early in the race?: It is so tempting to run faster than your goal pace early in the race when you feel fresh, but banking time almost always backfires. Those faster early miles burn through your energy reserves too quickly. You usually end up losing much more time in the final 10 kilometers than you saved at the start. Staying patient always pays off.
Can I share or print my marathon splits?: Absolutely. You can use the share button to copy a link that reopens your exact plan, or copy the splits to paste into your notes. You can also print a pace band, which gives you a compact strip of your checkpoints to carry on race day.