When cutting a ride, you can use the following tools:
Sliders give you the ability to roughly set the starting and finishing point when you a re cutting a ride.
TIP: Zoom into the start or finish point to precisely locate the marker to within letterbox level
Fine tuning allows you to get the starting and finishing point markers to within letter box accuracy of your bunch ride.
Each movement of the fine thing witll move the marker one data point backwards or forwards depending on your selection.
TIP: Drag the street view icon to the starting or finishing point marker to accurately have the marker located whether it's the lines at a traffic light, a street sign or other road feature that helps ensure that you ride is accurate to within the data point.