Day Four: I'm starting to struggle a little bit. I spent some time with the doctor last night and this morning - one of my knees is apparently intent on slowing me down.

We began today at sunrise in a place called Kabarnet, once more up in mountains and above the clouds, looking down on the Rift Valley. We're now about 200km into the 400km in total we'll do on this cycle ride.

As we cycle through very small villages and past tiny settlements one of things we keep noticing - and one of the things that keeps us going through this - is the sight of kids walking literally miles and miles to school and the value they obviously put on education.

To be here in the country taking part in a project that is going to provide learning aids to schools, not just in urban areas but also in rural areas with a guarantee of supplied electricity and service and maintenance of the equipment we're providing, is a fantastic feeling and a great motivator.

This afternoon we're looking at a cycle onto a town called Eldoret. That will leave us with just two more days to go.

Hopefully with a few pills from the doctor's magic bag and a little bit of rest this evening I should be OK to press on.