This is a fascinating website for teachers and students of history.

This interactive model created at Stanford University calculates the time (in days) and expenses (in denarii) for travel by various modes (foot, pack animal, ship, and caravan) between major cities in the Roman Empire. By simulating movement along principal Roman roads, navigable rivers, and sea routes, it reconstructs the duration and financial cost of travel in antiquity. Click here to access.

Select the 'Mapping ORBIS' heading to set some parameters.

Thanks to Sarah from Research Information Services for passing this on to Cyberschool.