I'm just starting to get out regularly since the bad weather, christmas etc. I went out on yesterday and did 28 miles (should've been 30, but I took a wrong turn ). This took me 2 hours and I did nearly 1500 ft of climbing. The main area that I could see an improvement in, is my hill climbing. I tried getting up the hills that I do regularly in a bigger gear. Albeit just one gear up from usual, I managed every hill in this gear and didn't feel too wasted. When I think back to my first attempts at these hills I can really tell a difference in my fitness levels . This is just the motivation I need to keep pushing myself, that and the fact that I am doing my first sportive in March .