Multi-day planning: splitting a long drive into days that actually work
Google Maps plans a long trip as one continuous drive. People plan it as days, with limits, deadlines and places to stop. A proposal for a trip view that splits the drive into realistic days and flags problems without changing your plan.
Views are my own, based on public information and my own use of Google Maps. I don't work at Google and have no inside knowledge of its plans.
Ask Google Maps for a route across a few states and it gives you one number, such as 14 hours 20 minutes, as if anyone drives that in one go. Nobody does. A long road trip is planned as days, and that's the part Maps leaves to you.
The problem
The questions that decide a long trip aren't about the fastest route. Where do we stop tonight? Can we reach the hotel before check-in closes? Will we be on a hill road after dark? Does the car have enough range between chargers on this stretch? Some roads through forest reserves close to traffic at night. Will we get there in time?
Today people answer these in a notes app or a spreadsheet, then come back to Maps for each leg, one day at a time. The plan and the navigation live in different places. When the first day runs two hours late, nothing tells you what that does to the rest of the trip.
Who it's for
People taking self-drive trips of two days or more: families on holiday, pilgrimage circuits with several stops, and anyone driving an electric or rental car on unfamiliar roads, where range and fuel matter more than usual.
It isn't for single-day drives. Someone driving three hours to the next city should see no change at all.
The proposal
A trip, split into days
You add destinations as you do today. If the drive is long enough, Maps offers to split it into days. You set a daily driving limit, such as seven hours, and Maps shows where each day would end, with towns along the way that are good places to stop. You can drag a break earlier or later. Maps never re-splits the trip on its own.
Limits that flag, not rules that override
You can add the limits that matter to your trip: a daily driving limit, no driving on hill roads after dark, and arrival deadlines you enter yourself, such as a hotel check-in or a gate that closes at a set time. When a day breaks one of them, Maps says so and offers options, such as leaving earlier or stopping sooner. It doesn't change the plan without asking.
Deadlines are entered by you, not assumed by Maps. A gate time or check-in that Maps guesses wrongly is worse than one it doesn't show.
The car you're driving
Range matters on long trips, especially in an electric car. When the car shares its range and fuel level with Maps, the trip uses them. When it doesn't, Maps asks once, with simple defaults, and labels them as assumed so you know where the numbers come from. Fuel and charging stops are planned into each day, not found in a hurry when the tank is low.
Conditions along each day
Each day shows what's known about the roads and weather for when you'll be on them, not just for today. Uncertainty is stated: a forecast for a day five days away is labelled as a rough guide, not shown as fact.
When a day runs late
If you're running behind, Maps shows what that does to later days: "You'll reach tonight's stop at 9:40 pm, after the check-in time you set." It offers to re-plan, and the choice stays with you.
A trip you can take offline
One download saves everything for the trip: maps for each day's route, your stops, fuel and charging points, and hospitals along the way. Maps already lets you save areas offline. The difference is that you save the trip, not a set of rectangles on a map.
How I'd measure it
| Type | Metric | Why |
|---|---|---|
| Primary | Share of multi-day trips planned in Maps that are then navigated day by day in Maps | Shows the plan and the drive are finally in one place |
| Supporting | Flags that lead to a change in the plan | Shows the flags are useful, not noise |
| Supporting | Re-plans accepted after a late day | Shows the late-running warning helps people adjust |
| Counter | Flags dismissed without action | A high rate means Maps is nagging |
| Counter | Arrivals after a deadline the user set, on trips planned in Maps | The plan should make missed deadlines rarer, not more common |
| Counter | Trip plans started but abandoned | Signals the setup asks too much |
Risks
| Risk | Why it matters | What I'd do |
|---|---|---|
| Too much for most users | Most trips are short, and extra options clutter the screen | Show the trip view only when a drive is long enough to need it |
| False confidence | A plan that looks "realistic" can still fail | Present days as estimates, and state uncertainty |
| Wrong deadlines | A wrong gate or check-in time misleads people | Let users enter deadlines; don't assert them |
| Distant forecasts | Weather several days out is unreliable | Label confidence, and update as the day gets closer |
| Trip planners already exist | Dedicated trip apps handle planning | The difference is that the plan lives where the driving happens |
Next in this series: why Google Maps falls short on long trips, and what convoy mode and multi-day planning have in common.