The Osaka Marathon is a largely flat but gently rolling marathon, with about 107 m of climbing and 122 m of descent (a near-level net change). Pace it by even effort: ease back on the few rises and let the descents run, rather than forcing an identical pace on every kilometre.
Sunday 28 February 2027
About 21 weeks away · 147 days · projected from the usual race weekend
Elevation gain
107m
modelled
Elevation loss
122m
modelled
Net change
-14m
Terrain
Rolling
February
At the gun
5°C
~9:00am start
By the finish
9°C
warms through the morning
Humidity
62%
morning average
Conditions
Ideal
cool, fast racing weather
A thirty-year average for February, not a prediction. The real forecast appears here inside the last nine days.
3:30:00
Target pace
4:59/km
Your goal is already a Osaka time, so the plan finishes on it. The hills are in the splits below, not in the total: they decide which kilometres are fast and which are slow.
The climbs and descents very nearly cancel out.
Osaka, Japan
Hover the map or the profile, the other follows.
Interactive route map loads as you approach it.
Osaka is a 42.2 kilometre course described as flat, fast tour of the city. It has about 107 metres of climbing. It has about 122 metres of descent.The elevation chart and split table below provide the same route information without requiring the map.
This one is won on the back half.
| Marker | Target pace | Clock | Terrain |
|---|---|---|---|
| 1 km | 4:38/km | 4:38 | -14 m |
| 2 km | 4:55/km | 9:33 | flat |
| 3 km | 5:12/km | 14:45 | +8 m |
| 4 km | 4:51/km | 19:36 | flat |
| 5 km | 5:08/km | 24:44 | flat |
| 6 km | 4:59/km | 29:43 | flat |
| 7 km | 5:02/km | 34:45 | flat |
| 8 km | 4:50/km | 39:35 | -6 m |
| 9 km | 5:12/km | 44:47 | +8 m |
| 10 km | 4:58/km | 49:44 | flat |
| 11 km | 5:14/km | 54:58 | +9 m |
| 12 km | 4:36/km | 59:34 | -16 m |
| 13 km | 4:52/km | 1:04:27 | flat |
| 14 km | 4:50/km | 1:09:17 | flat |
| 15 km | 5:05/km | 1:14:21 | flat |
| 16 km | 4:59/km | 1:19:21 | flat |
| 17 km | 4:58/km | 1:24:18 | flat |
| 18 km | 4:59/km | 1:29:17 | flat |
| 19 km | 4:58/km | 1:34:15 | flat |
| 20 km | 4:57/km | 1:39:12 | flat |
| 21 km | 5:07/km | 1:44:19 | flat |
| 22 km | 4:52/km | 1:49:11 | flat |
| 23 km | 4:58/km | 1:54:09 | flat |
| 24 km | 4:59/km | 1:59:09 | flat |
| 25 km | 5:00/km | 2:04:08 | flat |
| 26 km | 4:59/km | 2:09:07 | flat |
| 27 km | 4:59/km | 2:14:06 | flat |
| 28 km | 4:59/km | 2:19:05 | flat |
| 29 km | 5:06/km | 2:24:11 | flat |
| 30 km | 5:02/km | 2:29:12 | flat |
| 31 km | 4:58/km | 2:34:10 | flat |
| 32 km | 5:28/km | 2:39:38 | +17 m |
| 33 km | 5:01/km | 2:44:39 | flat |
| 34 km | 4:38/km | 2:49:17 | -13 m |
| 35 km | 4:46/km | 2:54:04 | -8 m |
| 36 km | 4:59/km | 2:59:02 | flat |
| 37 km | 5:01/km | 3:04:03 | flat |
| 38 km | 4:54/km | 3:08:58 | flat |
| 39 km | 4:59/km | 3:13:57 | flat |
| 40 km | 4:55/km | 3:18:52 | flat |
| 41 km | 5:14/km | 3:24:06 | +9 m |
| 42 km | 4:56/km | 3:29:02 | flat |
| Finish | 4:59/km | 3:30:00 | flat |
These are modelled splits, not a validated prediction. The route and elevation data, weather, surface, congestion and your own uphill and downhill ability can all change the pace you can hold. Use the numbers as a planning guide, run the climbs by feel and stay relaxed on the descents.
These exact splits as a structured workout: one step per kilometre, each with its target pace band (±10 s/km). Your watch prompts every step, so on race day you run the terrain, not the arithmetic.
Garmin needs a cable and a computer. In this file: 43 steps · every km · 3:30:00 goal · even effort · typical February conditions · per-km paces. Change anything above and download again.
You will need a USB cable and a computer. There is no way around that: Garmin has never built a way to send a workout to a watch from a phone, from Garmin Connect, or from any file you can email yourself. Everyone who makes these files, us included, has the same constraint.
On a Mac the watch mounts as a media device rather than a drive, so you will need a transfer app such as Android File Transfer to see those folders. Windows shows them in Explorer.
Dragging it into Garmin Connect or TrainingPeaks will not work, and it is worth knowing why. .fit is a container that holds several different kinds of file. A recorded run uploads to both of them happily, which is what those drop zones are built for. A workout is a different file type inside the same extension, and neither platform will import one.
Train for this course, not just the distance.
A coach builds the climbs and descents into your plan, and closer to the day you can sit down with Jason and settle how you will run it.
Hardest km
32 km at 5:28/km
Fastest km
12 km at 4:36/km
The coach's read
Flat and fast through the heart of the city, with cool late-February air to match. The crowds are dense down Midosuji early, so hold back and run even effort, then let the flat run-in to the bay reward your patience.
WHY At 3:30:00, that's about 4:59/km of effort the whole way, the splits below shift with the gradient, not your pace.
A coach's read on how the Osaka Marathon runs, and how to spend your effort across it.
This page knows the Osaka Marathon. It does not know you. Two or three weeks out, Jason reads your last twelve weeks and spends 60 minutes going through the day with you, then writes it down so you are not running on memory.
A$180
One session, one race. Video call, or in person in Sydney.
Your race is still a way off. Worth knowing about now, worth booking about eight weeks out.

A coach builds this course's climbs, descents and race-day pacing into a plan made for you.