Biking 80km with hill

After 2 weeks of practice, it was time to bump up our weekend ride. We wanted to do 100km, but the 100km loop had 3 long hills. So we decided to go for the route which was ~80km with a long hill. Starting out it was mostly downhill. This road was not so good, pot-holed etc. The route was such that we go downhill, and then come back up the hill. This was part of the 100km circuit. While going downhill, I could see it was so steep that it was almost scary. Steep down and windy road. I could see how going uphill would be killing. Little bit down the road we turned back to go up the hill. Gear had to be 1:1, even at that I was not able to pedal and move the bike up. I was so wishing for the time when all I had to do was run up, far better than the effort I was putting with that bike. I had to stop 2 - 3 times to catch my breath, re-engergize and start again. I don't know how, somehow I reached top of that really long hill. From there on also it was a bit flat, bit also quite a bit gradual uphill. After that gargantuan hill, even the small uphills were feeling too much.
Good thing, on the way we found a coconut walla and had some fresh coconut water. This was so good, so much better than what we had in the city. This was also with malai, sweet!
After that point I was tired and just wanted to get home. On the way we had seen quite a few trucks, and so much pollution. My nose and eyes were all hurting. I would need to find something to cover my face on the trip.