Terwa Marathon
Oulu, Finland · Expected Saturday 22 May 2027Date to be confirmed
Difficulty Calculator
Adjusted Time
3:55:09
Time difference: -4.9 minutes compared to an average road marathon.
Course Details
Typical Race-Day Weather
Average for this date over the last 8 years.
Terwa Marathon course route, from the mapped course on GoAndRace.
How hard is Terwa Marathon?
On our difficulty model, Terwa Marathon plays about 5 minutes faster than an average road marathon for a 3:30 runner. It ranks #739 hardest of 897 marathons we analyse, and #4 of 6 in Finland. Use the calculator above to see the exact adjusted time for your own goal pace.
What will you run at Terwa Marathon?
Estimated finish times on this course versus the same effort on an average road marathon, based on its elevation, surface, and expected race-day temperature.
| Average-course time | On Terwa Marathon | Difference |
|---|---|---|
| 3:00:00 | 2:55:00 | −05:00 |
| 3:30:00 | 3:25:04 | −04:56 |
| 4:00:00 | 3:55:09 | −04:51 |
| 4:30:00 | 4:25:14 | −04:46 |
| 5:00:00 | 4:55:20 | −04:40 |
| 5:30:00 | 5:25:26 | −04:34 |
| 6:00:00 | 5:55:33 | −04:27 |
Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.
Terwa Marathon 2027 Course Analysis
Terwa Marathon is a full marathon held in Oulu, Finland. The next edition is expected on Saturday 22 May 2027, following the pattern of previous editions (the 4th Saturday of May). The organisers have not confirmed it yet. The course is run on road surface with 140m of total climbing, with its high point near 18m above sea level. For registration and full race details, visit the official Terwa Marathon website.
Course map
Terwa Marathon is run as a loop: the course starts and finishes in the same place. The race map above shows the full route (43.1 km as mapped), with the start and finish.
Climbing
At 140m of total climbing, it is flatter than 56% of the 897 marathons we rate.
Race-day weather
Over the last 6 years this May date has averaged a high of 14°C and a low of 4°C. That is cooler than 85% of the marathons we track.
On 22 May over the last 6 years, the high ranged from 9°C (2025) to 19°C (2019), so pack for either. It rained on 4 of those 6 days.
| 22 May | High | Low | Rain | Wind |
|---|---|---|---|---|
| 2026 | 16°C | 9°C | dry | 11 km/h |
| 2025 | 9°C | 3°C | 5 h | 20 km/h |
| 2024 | 16°C | 1°C | 1 h | 9 km/h |
| 2021 | 9°C | 3°C | 16 h | 14 km/h |
| 2020 | 13°C | 0°C | dry | 12 km/h |
| 2019 | 19°C | 5°C | 7 h | 20 km/h |
Daily weather for the race location (Open-Meteo archive). Wind is the day's peak.
Looking for an easier marathon or a tougher challenge? You can also compare Terwa Marathon against other marathons to find the right race for your goals.
Marathons of similar difficulty
If Terwa Marathon fits your goal, these courses play out about the same on our difficulty model.