Planned and executed a four-day solo hike. I did half of the south downs way, from Eastbourne to Amberley. That's 83 km of route, I probably walked about 90km in total, taking a shy over 72 hours, camping on or just off the trail in wherever seemed like a good location. I've never done anything like this before. It took less than two weeks from when I decided to go, to when I set off.