Broxbourne Woods NNR Trail
Loops through ancient woodland and heathland with moderate, undulating terrain and some gentle climbs. The 17.5km distance makes it too long for most young families, though shorter sections are manageable; uneven forest paths aren't buggy-friendly. Dogs welcome on leads to protect wildlife in this National Nature Reserve. Highlights include veteran oak trees, woodland birds, and peaceful trails away from urban Hertfordshire—excellent for a half-day immersive nature walk.