My wife and I toured the Pyrenees cycle camping (20 years ago!) and loved it. I had No1 (18 months) on a babyseat with front panniers and No2 was safely in his mum's tummy (at 20 weeks). It cured Kate's morning sickness and she felt wonderful afterwards - the best of her three pregnancies. The only downer was that she did get a bad dose of thrush and the cycling probably helped provoke it, so hygene and some cream would help a lot.