As far as you need to.
Legally, when riding a bike, you must ride in the same direction as traffic, the right lane in the US. You should ride as far to the right as is safe (unless you are turning left). It is illegal and unsafe to ride in the opposite lane (the left lane in the US).
25.
140 miles long!!!!
As far to the right as possible and observe the same traffic laws as cars and light trucks.
erm 1 mile ?
If you ride your bike 5 kilometres in 20 minutes, you are riding at a speed of 15 kilometres per hour (since there are 60 minutes in an hour). Therefore, in one hour, you will ride your bike 15 kilometres.
When you are in the far right lane, your turn should put you in the far right lane. Then, when safe, you can merge into the left lane to pass. This is for a right turn from a 2 or 4 lane onto a 2-or higher lane road.
You should always only turn from the lane closest to the direction you wish to turn. For example you will turn only from the far left lane if you are turning to the left. If you wish to turn right then you will have to do this from the far right lane only.
far left
hitchhike!
merging vehicles at on ramp
Merge into the nearest left lane when it is safe to do so.