1. A different or secondary path or course taken to reach a destination, typically used when the primary route is blocked, congested, or unavailable
Due to road construction, we had to take an alternative route to get to the office.
Devido à construção da estrada, tivemos que pegar uma rota alternativa para chegar ao escritório.
2. In navigation systems, a substitute itinerary offered when the main path is not feasible
The GPS suggested an alternative route that would save 15 minutes.
O GPS sugeriu uma rota alternativa que economizaria 15 minutos.