We climbed Ingleborough and Pen Y Ghent last year, not on the same day mind! We live nowhere near the Dales but loved the area so much we are going back this year to do some more walking.
We live very near the South Downs and try to get out walking with the 9 and 11 year old dses at the weekend. I love being out in the countryside and as the dses get older and stronger it's so much easier.
We have a week booked in the Peak District in May and then our main holiday is Northern lakes for a week followed by the Dales for a week. Purely for the walking!
When we came down from Pen Y Ghent last year we passed a couple climbing up with a toddler each on their back, twins I assumed
We also passed a family with a tiny baby climbing up toward Ingleborough as we came down! We didn't start walking decent distance with our boys until ds2 was just turned 8. We climbed Snowdon up the Pyg path and completely got the bug. By the end of that holiday we did a couple of 8-9 mile walks without too much cajoling!