I wouldn't try it with a 2 year old personally. It's a fairly long and steep road to the stones.

There is a bus that goes down A591, then you could hike in from there...check out more info at Keswick tourist info

We parked on the road alongside the field the stones are in. This is what people are doing. I’d say 200m/300m from the circle itself. You can see on google aerial maps.

I agree with the other reviewers best go out of season and either early or late when I was there, there was only one person and they left when we got there. I think the people who go to these sites appreciate the solitude and allow others to enjoy it as well.

You can walk around it freely at any time. The circle is basically in a field to which there is open access

Totally free...just park up and off you go

In Keswick [England's Lake District] - it was really cool.

Visited today, was super nervous due to above comments. However it was very easy! Completely fine if you have an off-road chair or wheel: even my manual chair would have done it with a bit of trouble I think. There are two gates, and one of the gates is large enough even for my Trike, larger than a normal door width. The actual area itself is just a field so gets a bit muddy in winter but no more inaccessible than any other field. It slopes slightly uphill towards the stones. Had a great time!

There are two small gates, thereafter it's a field. There is no "footpath". Ergo, it's its been raining it may be soggy, if it's been dry.... you get the picture. Perhaps you could raise mobility access to the Circle with the National Park Authority, it may not have occurred to them if no one has mentioned the small gates in aeons.