@Jasono. Sorry to hear about your struggle, on your journey from Leicester. You did not say what your destination was , probably Skegness? It only the south of the county that is flat. The rest of the county is moderately hilly, especially the wolds. The flat area, called the fens, covers South Lincolnshire [aka Holland]. and parts of Cambridgeshire and Norfolk. If you cycle from Lincoln to Boston on national cycle Route One, which mainly runs alongside the river Witham, you can then bike all the way to Cambridge without rising or falling more than about 40 feet. Total distance about 80 miles. Of course as you say, the fens are very windy. I always plan my rides so I get headwind out, and tailwind back. Some times, as a treat, like yesterday, I did the headwind bit on the train, to Sleaford, and biked the 20 miles back. Inspite of showers, I really enjoyed the trip.