There are a lot of articles on guided tours in Iceland but few on what to do after a day trip. We have taken the time to put together some more or less serious suggestions taking into account the duration and geography of the tours. This guide may help you to relax while striking attractions in Iceland of your bucket list. After all you cannot just be touring for 24 hours.
After having seen the tectonic plates at Thingvellir national park, the hot spring Geysir and Gullfoss waterfall you usually are back in town just in time for happy hour. Not only is the otherwise expensive booze affordable but also does this give you chance to mingle with some locals. Many local bars ( also hotel bars) have offers in the later afternoon which half the prize on selected drinks.
The peninsula with its lava fields in the south west of Iceland has two major sites where you can end: The airport to travel back home or the blue lagoon. Nothing relaxes after seeing the geothermal sites like soaking the geothermal spa. If you return to Reykjavik you can go for a coffee in one of the cozy coffeehouses in Reykjavik.
After 13 hours of travelling you may want to consider watching the "10-fréttir", the news at ten on TV before hitting the hay. If you are still awake you can also consider reading (or watching) "the journey to the center of the earth", since Jules Verne picked the peninsula as starting point of said journey. After all you have seen what is considered "Iceland en miniature" by many.
One of the longest day tours in Iceland at up to 14 hours. It takes you along the ring road to the lagoon at Vatnajökull glacier, Europe´s largest glacier. Also here you may want to go to be right away or if you can´t sleep you can go out and enjoy the midnight sun or northern lights, depending on the season. In fact the tour is so long that during winter you may see the aurora borealis on your way back to town. Jökulsárlón glacier lagoon has also been featured in a few Hollywood movies, so revisiting it with James Bond is always an idea.
At only ten hours you´ll be back in time for dinner but having missed happy hour. Making a reservation at 8 or 8:30 gives you time to freshen up after having seen Seljalandsfoss and Skógafoss, two of the most famous waterfalls in Iceland. After dinner you can opt during winter time to go for northern lights tours in hope of seeing the auroras dance.
They usually only last about 3 hours, so after the morning tour you are just in time for lunch at one of the many seafood restaurants at the harbor. You can also combine it with another short tour such as a city tour.