At 177 miles I guess that they were enjoying themselves looking at the views. Not all of us are either fit enough to do it in less or have a desire to do so. As this is your first post we obviously have a lot to learn from you. At "only 30-35 miles per day" you should start training for 2012! Alternatively you could try the Land's End to John O'Groats, I think the record has only got down to about 10 days.
Pennine Way 2005&2014; C2C 2006; SWCP 2007; WHW 2008; GGW 2008; Dales Way 2011; Clev.W 2012; Yorkshire W.W. 2012; Offa's Dyke 2013; Peddars Way & Norfolk Coast Path 2014; Pembrokeshire Coast Path 2015: LEJoG in stages 2018: Camino 5/2019 - 2020 NOTHING!.