166.5 miles
The Ishikari River is 268 km in length.
268/C hours
6.72 minutes.
1hour and 57 minutes
355 km is about 220.5 miles.
It takes 0.41667 hours or 25 minutes to drive 50 km if you drive 120 kilometres per hour.
A drive of 1400 km would take about 10.7692038 hours at a rate of 130 km/h,
3 hours 34 minutes.
2,270 km
At 60 MPH average, about 4 1/2 hours.
2 hours, 10 minutes, 30 seconds
About 9.2 hours.