I got a bar end mirror from Decathlon recently, just a fiver and it's much improved my experience on the road, now seeing what's coming up behind--and how fast--I'm so used to looking in the rear-view mirror while driving it's natural to want to do likewise when out on the bike I reckon.
Anyway, today I managed a route around the forests of north County Antrim, a loop southwards from Ballycastle, around 50% off-road, lots of hills and headwinds, slowed my average speed to 9mph:
The old Ballycastle Railway, 3' gauge
Ballypatrick Forest
Gravel!
Views towards Rathlin Island and Scotland
More gravel, more forests!
A bit of monastic heritage, the remains of a 'round tower' at Armoy.
A good ride, some challenges in the forests with navigation but got there in the end :-)