400km in 40 hours cycling challenge

As part of our 40th Anniversary celebrations, every member of staff is completing a fundraising challenge. I am going to be cycling 400km in 40 hours at the start of November. It will be twice as far as I have ever cycled in 2 days, so certainly a challenge. As a "warm up" I will also be riding up Mount Etna 3 times in a day, completing over 4000m of vertical ascent during the course of the ride. Hopefully these two things will be worthy of a little support, even a couple of quid will make a difference. Thank you.