Free Road Trip Duration calculator with clear step-by-step results.
Distance divided by speed gives driving time, but nobody arrives in that time. Fuel stops, meals and the rest breaks that fatigue guidance calls for add roughly 10-15% to a long route, and once the total exceeds a sensible daily driving limit the trip becomes a multi-day journey rather than a long day. Splitting the answer into driving time, break time and days makes clear which of the three is the real constraint.
Driving and rest
Driving hours = distance ÷ speed; rest hours = distance ÷ 100 × break minutes ÷ 60
Days
Days = ceil((driving hours + rest hours) ÷ maximum driving hours per day)
Driver fatigue is a serious safety risk. Take regular breaks, do not drive while tired, and observe any legal driving-hour limits that apply to your vehicle or licence class.
Road safety guidance generally recommends a break of at least 15 minutes every two hours of driving. At 90 km/h that is roughly 8 minutes per 100 km, before fuel and meal stops are added.
Because you cannot drive a fraction of a day. A 14-hour journey against an 8-hour daily limit needs two days, with the second one short.
85-100 km/h on motorways, 60-75 on rural roads, and much less through towns or terrain. Use the lower end if the route mixes road types, since the slow sections dominate the total.