There are lots of ways to cycle with your kids: big or small.
Pop 'em in an Xtracycle using the nifty Pea Pod accessory..
Or if you're handy, add some seats to the wooden deck (snap deck) of an Xtracycle..
A bakfiet from Clever Cycles can carry LOTS of children!
You could even combine a Clever Cycle bakfiet AND an Xtracycle!
Wondering if your kids can handle a bike trip? THIS family goes TOURING on trips as long as 4000km!
And when they're too big for the little seats, but not big enough to ride on their own, they can always tag along!