Thanks for you call earlier, regarding the data boxes on your unit.
There is a solution on the on line resource, to which you have membership for free for 1 year from the date of your purchase:
To login please visit our website - www.gpstraining.co.uk - and click on on line resource.
Enter your email address as your username and password (unless you have changed it)
Go to Courses - Satmap - Satmap Top tips - Top tips for SatMap Active 20
You will find a video named " Active 20 Changing map page data boxes" in the Top tips for Satmap
The settings you will need to choose are Trip distance for the overall distance of your route and Go to Distance for the remaining distance to the end of your route.
I hope this helps.
kind Regards