You can follow the runners along the entire route and at the finish stand. You can also follow them with the help of a mobile application that can be found in the Google and Apple stores.
You can find the routes at the marathon web page.
Sure. The start will be at Trg Ajdovščina, where a tour is also possible. If you can't make it to the venue, watch the live broadcast on PopTv or 24ur.com (in Slovenian language only).
The marathon will be broadcast live from 8:45 a.m. on Pop tv and 24ur.com (only in Slovenian language).