From the page "Routes & District Maps", click on "+ more criteria" to access "Preferences".
This option lets you choose the mode of transport and/or type of walking.
Choose your mode of transport to be used for the route search, click in the check box to uncheck the undesired mode
Choose the type of walking that defines the speed and running time. For example, good walker will move up to faster and further than a normal walker
Click on the "Search" button to start research