Yesterday we took the bikes & the dog down to Guildford with the intention of going for a half hour ride along the river & ending up cycling nearly 20km, it was great fun. Very leisurely, perfect conditions (no hills, no flies, no blazing heat, no wind - what more could you ask for?)
Saffi ran most of the way (we discovered she can't bark at other dogs when she's running hard next to a bike!), and spent some of the time later riding in my basket. The kids had the time of their lives, Owen peddling his too small bike (not ready to move up to the bigger one) like mad non stop.
Got onto Google Earth later & mapped our route, here it is.