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Distance
145 Miles
Elevation
500M
Start Date
Sat, 23rd May 2026
Location
Birmingham
Cut-off Time
45 Hours
It's one of Britain’s longest, oldest and most iconic single-stage, non-stop canal race. Stretching an immense 145 miles from the heart of Birmingham to the centre of London, the Grand Union Canal Race (GUCR) is a legendary test of flat-surface endurance that belongs on the bucket list of every serious ultra runner.
Organised by the incredibly dedicated team at Canalrace CIC, the GUCR is the original towpath ultramarathon. First run in 1993, it has grown into an institution within the UK ultra-running community. It also forms the prestigious first jewel in the crown of the "Canal Slam" (a challenge to complete three massive UK canal races in a single year).
The route is beautifully simple in its navigation but brutally demanding on the body.
To cater to different styles of ultra-running, the GUCR allows runners to enter in one of two categories:
The Grand Union Canal 145 Mile ultra is a piece of British ultra-running history. The camaraderie along the towpath, the flawless organisation, and the sheer magnitude of running from Britain's second city to its capital make it a life-changing experience. Earning the highly coveted GUCR finisher's medal is a mark of supreme endurance. Because of its legendary status, entry is highly competitive and usually operates via a ballot system. For the most up-to-date details and registration information, please visit the official race website.
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Race Summary
Distance: 145 Miles
Elevation: 500M
Start Date: Sat, 23rd May 2026
Location: Birmingham
Cut-off Time: 45 Hours
Minimum Average Pace
The minimum average pace required to finish within the event's cut-off.
Per km: 11:34/km
Per mile: 18:37/mi
Please note: these are estimate calculations and don't account for any rolling checkpoint cut-offs.
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