Running
Marathon
42.2 km
Start: 06:15 PM
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Race month
February · 0°–8°
Field size
1,000–10,000
Distances
42.2k
Distances
Finish-time calculator
Your finish time
Slide to your target pace — and see when you’ll hit the line.
6:00
min / km
← faster · 2:0012:00 · easier →
4:13:10
Estimated finish · 42.2 km
10 km1:00:00
5 km30:00
Where am I when? · Splits
Start
0:00
5 km
30:00
10 km
1:00:00
15 km
1:30:00
20 km
2:00:00
Half
2:06:35
25 km
2:30:00
30 km
3:00:00
35 km
3:30:00
40 km
4:00:00
Finish
4:13:10
Estimates only · form, weather, and hills can change the result.
Course & climate
Typical weather in Otsu
Monthly averages based on historical data (2000–present).
February
8°0°
- Sunrise
- 06:45
- Sunset
- 17:39
What to expect
What makes this race distinct — for training and race day.
The Lake Biwa Mainichi Marathon, first held in 1946, is recognized as the oldest marathon in Japan. Established in Otsu city, it features a fast and flat course along the scenic Lake Biwa, attracting many elite athletes and record-setting performances.
The field
1,000–10,000
Catering & aid stations
There will be aid stations providing food and drinks at various points along the course.
Pacers
Pacers will be available for participants aiming for specific finish times. Participants can follow designated flag-bearing pacers during the race.
Stay & get to the start
Getting there
Assumed starting point
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Estimating travel…
Hotels near the start
Route maps
Results
Official finisher lists are published by the race organiser.
View official resultsLast updated: Jun 5, 2026, 07:52:41 PM
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On your marks
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