You have access to a variety of options during an ongoing ride which can be selected from the In-ride Menu.
During a ride, press the D button to bring up the In-ride Menu.
You can scroll through this menu by using the Touchscreen.
You can also move through the Menu by using the Physical Buttons B & C and use Button D to select an option.
These are the options available:
Pause, Save, Edit Ride, Lock Touchscreen, and Discard.
Scroll down to see these options.
Note: Selecting "Discard" will permanently delete the ride data of the current ride. Any rides which are discarded, cannot be retrieved.