Get Route shows distance Klms need in Miles

Here you are:
J!2.5
Component
zhuk.cc/files/com_zhgooglemap-j25-5.4.1.2-alfa.zip
Plugin
zhuk.cc/files/plg_zhgooglemap-j25-4.0.7.2-alfa.zip

J!3.x
Component
zhuk.cc/files/com_zhgooglemap-j30-5.4.1.2-alfa.zip
Plugin
zhuk.cc/files/plg_zhgooglemap-j30-4.0.7.2-alfa.zip

In component details.
Open tab Route (or slider, depends on joomla version)
I added three items
* Unit System
* Avoid Highways
* Avoid Tolls

You can set it, and it will be used in route building

In this release I added in placemark details new field "Placemark Full Description"
And it can be displayed in placemark detail view (menu item) by setting new parameter.
And like this setting I added in placemark list view (menu item).
And the second parameter I added into placemark detail and list view - hide Addition HTML text.
Explainations: you can add some text into Addition HTML field, and I display it in placemark infowindow. But you can show this placemark by menu item in a single view
Like this joomla.zhuk.cc/index.php/zhgooglemap-dem...ure-placemarkdetails
Or display in a list
Like this joomla.zhuk.cc/index.php/zhgooglemap-demo-feature-placemarklist

And before now I display Addition HTML text every time.

Now you can control (show or hide it). And You can display the other HTML text (full description).
For example, in addition text you can show some preface text, but in a full details - you can show all text.

Hi Dima thanks for such a quick return on that!

I've just installed the Alpha version and the option to select for miles is ok however when the route is shown it is shown in a mixture of Kms and Miles which is very messy and the distances are not correct either.

Hi.

No, you see it is kilometers and meters.

It is in my test site

Ok I can see it is showing on your image but it is coming up as shown in my snapshot on my site even though I have set it to miles.

Question Should I have uninstalled the old version before installing the Alpha?

No. Do not uninstall.

Check new version in admin panel.
Or get last version from JED and install over (upgrade).

If you uninstall - you will lost your data, because tables will be dropped.