Grand Union Canal Race

The Grand Union Canal Race (GUCR) is a legendary 145-mile non-stop ultramarathon from Birmingham to London along the historic canal towpath. Organized by runners for runners, this volunteer-led event emphasizes community over commercialism, offering a gritty, authentic challenge without sponsors or fanfare. Open to anyone aged 20 or over, the race welcomes both supported runners with personal crews and up to 75 unsupported participants who rely on checkpoint aid. With a generous 45-hour time limit and straightforward navigation following the fully waymarked Grand Union Canal, the GUCR is accessible to both seasoned ultrarunners and determined first-timers. The event features nine well-spaced aid stations providing essential hydration and snacks, while maintaining a low-key, non-profit ethos where all proceeds support the running community. Recognized as one of Britain's most iconic ultras, the GUCR combines urban and rural scenery with the unique camaraderie of canal long-distance running.