Walk from Upton Mil (Northampton) via Kislingbury to Nether Heyford, passing Heygates Mill at Bugbrooke. Reaching the Grand Union canal and back to Upton Mill pass 15 of the locks on the Northampton Arm. Just under 17,000 images 1 second sequence, 24 FPS around 5 1/2 hours including stops 14.6 miles all in under 6 mins :)