For those who want the Ultimate Great Barrow Challenge, if you can do all 17 marathons in a year (19 in 2018) you can join a very Elite Club and get presented (for free) our Full Series Finisher t-shirt.
This is the Ultimate running t-shirt to now earn.
Click image to enlarge
Left: Steve Gordon, the first to do the full series.
Right: Charlie Harwood, the first to do the Series 3 years back to back.