King Alfred’s Way

I suppose it depends on the rider. I've done it 4 times now as it's ace. Each time on a gravel bike which for me, is plenty.

Perfect, that sounds pretty easy

I did it on a mtb with fast tyres and was glad of the extra cush. Obviously could have done it on slimmer but think I had more opportunity to enjoy the view on the mtb

I suppose it depends on the rider.

This is it really as i was happy on my short travel full suspension 29er...made the (many) downs more enjoyable and was kinder on my back on the hard summer ground over the couple of days

I did it on my mtb but a gravel bike would've been fine.

I've done it on both, in answer to the op''s question it is easier on a MTB, no question. It's doable on a gravel bike though. I would say it might even be more fun if not carrying camping kit on a gravel bike though. Loaded up a MTB would be my choice though for sure

I have the same debate as the OP, I have been wanting to do it for the last 2 summers but plans have been disrupted constantly. 

This year nobody is dying imminently or looking to frustrate my plans (yet) and a long weekend in June is now booked in. 

MTB option is rigid, 1x, 2.4x29” front/2.1x29” rear, but lacks barnacles for luggage. 

Gravel bike is 2.1x29” F/47mmx700 R (1.95” ish), 2x and has barnacles galore… 

I plan to camp so luggage capacity will matter. 

I have done it on a FS mtb not carrying luggage. It had pretty fast tyres. The longer road sections dragged a bit, but of course faster on the downs off road

The terrain is what i ride most weeks. For me 40mm tyres are just making life difficult, although that’s what lots of people use. I think a gravel bike with 50-55mm tyres is a pretty good compromise.