Dovegirl,
I knew about Ruth but not Jon so I'll keep an eye on his blog too
There are also people I've been following on Facebook who have or are currently walking, such as Wayne Dixon (and his gorgeous dog, Koda), who is rasing awareness for MIND and doing a massive litter pick along the way; Sam Doyle (although he's just stopped) who was walking to raise awareness of mental health issues affecting ex-forces personel; Christian Lewis, who is raising funds for SSAFA (an Armed Forces charity); and Alex Ellis-Roswell who finished his walk in aid of the RNLI a few months ago.