5 days if it is 500 miles
1500 days
It took 22 days to cross the river on the Oregon trail.
6,112 bagels.
I would say it would be 4-8 weeks
From Thailand it takes about ten minutes to cross the bridge over the Mekong River. From other countries it takes longer.
Incomplete question - does not say which river
Twice
it will not take very long unless you are traveling in fudge season when the river turns to peanut butter fudge and is full of hippos and nuts, but travelling down the river would take many days.
H
81
65 days
There are many bridges that will allow you to cross the Tiber River. These bridges include but are not limited to : Pons Mulvius, Pons Probi and Pons Aeilus.