Barnet to Welwyn Garden City
Follow National Cycle Route 12 from the outskirts of London into Hertfordshire on this fairly easy route. The route starts by High Barnet tube station and follows minor roads and tracks to Hatfield and then onto Welwyn Garden City. Route highlights include a spell through Monken Hadley Common in Hadley Wood at the start. There's also Hatfield Hall Park and Gardens which is an ideal spot to stop for some refreshments.
There are also several off road sections to enjoy making this a leisurely ride.