How far can your 6 year old walk?

No. Our 7 yo can do 7 miles.

Depends what's in it for them. Walking for walking sakes... A few minutes. Walking to the ice cream shop... A few hours.

With distances, it depends what they are used to doing, the weather, and the interest.
A sunny walk with animals to look at DD could go quite a long way at that age.
Rainy weather and roads would be another matter.

OP - games, goals, bribes & rewards. Or a scooter / bike depending on type of path.

On a good day we’ve done 6 miles in the Peak District (with our 3 year old walking too otherwise could have been more ambitious). Made a day of it with lots of snack stops, picnic lunch.

But yesterday he walked 2 miles with DH and they then had to get the bus home as he was cold and getting hungry and tired.

On a cold Feb lockdown day 5.6km seems pretty decent!

5.6k is fine for a 6 year old I think. I regularly do 4 or 5k with DS1 (nearly 5).
Were you going anywhere or just walking? DS1 moans a lot less if there is 'a point' to the walking...recent successes have been 'can we get as far as the big asda' and 'lets do a loop of the park and get takeaway hot chocolate'.

I'm working up to 'lets get as far as the beach' (45 minutes adult pace) DH can pick us up on the way back from the supermarket.

Ours will happily walk 10km - encouraged by his ability to collect a stick en route and a snack being in his pocket!!

Mine has done 7 miles - we worked up to it slowly though from 4 mile routes

Depends what mood he's in, but about 5km would be an average Sunday walk, any further would be a big, long walk for him. I often want to go further or longer but need to remember he's only got little legs and me and do will take turns at going out for a longer walk alone.

Oh, have you got a step counter on your phone - DS1 likes it if we reach the target (6000 steps on my phone).

My 4yo and 6yo boys can easily do 6-7km in the peak district. But somedays they don't want to. We did 10k last summer nonstop but that was slightly too far without a break (parking was about to run out).
I offer a choice walk in the woods, along a river or find some rocks. Sometimes they pretend to be monster trucks.
Sometimes I offer a snack/ sweets to make it to the top of a hill. But this can set up expectations of a treat.
Sometimes I print off a scavenger hunt or we go to jump in puddles or crack ice. Or find a stick to float in the river. In summer we paddled in streams. Make it fun but the choices are different types of adventure walks.
Most of the time they love a good walk though.

Oh yes and I always make sure I do a circular route which starts uphill and finishes downhill.

My four year old, if promised a treat at the end, can easily walk 10k. Yesterday, in zero degrees weather, he did 30 mins...

Pre-covid our then 6 year old walked 7 miles in the Alps with a promise of a Macdonald's at the end.
On other occasions he has had tired legs walking the 400m to school......

6 year old can do 7 miles

But isn't always willing to

My dd(5) is the same as @Aroundtheworldin80moves

Dd2(5.5) walked 3 miles, school day and then 3 miles home in September and October as we didn't have a car and I didn't want to use public transport.

She will happily walk 4 miles without any issues now. We don't do it very often though.

We are older now, but its freezing, damp and sloppy underfoot here today. We turned round and did just 30 mins.
But they will go for miles if it is somewhere interesting and/or with an end goal.

My 6 year old has autism, he can manage about 6 miles (he loves walking).

My 4 year old starts getting tired legs at the 5K point, but was able to walk further before lockdown. He walks further with a target in mind other than the park.

Made me chuckle but it's 100% true.

5k is good in winter. Mine probably has a limit of about 3k in the cold but we’ve done 10k ish last summer with lots of breaks and treats along the way.
A 6 yo I know does 10k almost daily with her mum. (Mum is a very keen Walker so she’s grown up with it)
What he can do and what he will do are entirely different

It totally depends on the route - my DSs (10 and 5) can do 10 miles if its interesting (and with the eldest that means not fully pathed, some scrambling) but 10 metres if its dull!

5 yr old regularly does 5miles but will go much further if there is a snack