Running
Marathon
42.2 km
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Race month
February · 0°–9°
Field size
1,000–5,000
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 Saitama
Monthly averages based on historical data (2000–present).
February
9°0°
- Sunrise
- 06:32
- Sunset
- 17:23
What to expect
What makes this race distinct — for training and race day.
The Saitama International Marathon is a prominent annual road running event held in Saitama, Japan. It attracts participants from various regions and emphasizes the use of technology to enhance the marathon experience.
The field
1,000–5,000
Catering & aid stations
Participants can expect on-course refreshment stations providing water and energy drinks at regular intervals.
Pacers
Pacing teams will support runners aiming for specific finish times, helping participants stay on track during the race. These pacers will carry flags indicating their target times during the event.
Stay & get to the start
Getting there
Assumed starting point
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Estimating travel…
Hotels near the start
Results
Official finisher lists are published by the race organiser.
View official resultsLast updated: Jun 23, 2026, 10:23:01 PM
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On your marks
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