Organisers of the London Edinburgh London event, which started on Sunday, were forced to cut the route short for safety reasons amid high winds.
Ian McBride is the only rider to finish the whole course having reached the Scottish capital before the challenge was curtailed.
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He overtook the riders he originally left behind as they also headed home and finished the epic journey on Wednesday evening.
A spokesperson for the organisers said: “We’re devastated that the weather stopped so many people coming through the Borders this time; it’s the part that so many people look forward to but safety and welfare of our riders and volunteers has to come first.
“We’re doubly upset that all the work done by the community, by local council staff and so many other people to help stage the event wasn’t used.
“We’ll be back in 2029 and looking forward to the community spirit that makes this part of the ride so special.”
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St Ronan’s Primary School in Innerleithen was one of the control points for the event, Britain’s biggest organised cycle endurance challenge.
There was also one in Hawick.
Cyclists have 128 hours to complete the journey, with sleeping normally kept to a minimum and done on the floor of halls or marquees.
Riders were due to benefit from hot meals and drinks, dormitory beds, mechanical support and the enthusiasm of around 70 volunteers in Innerleithen.
Locals put themselves forward to help, as well as many from further afield.
One had even cycled from Germany to lend a hand.
But the Innerleithen checkpoint, which had expected to cater for hundreds of riders, was visited by just one.
Ian McBride was the only rider to make it to the Innerleithen control point (Image: Contributed) Volunteer Miriam Adcock had been scheduled to help on Tuesday and Wednesday.
“So much work had gone into the planning of this event, which is wholly volunteer-run,” she said. “Planning has taken four years and around 1,000 volunteers across the UK were involved.
“But on a positive, many of the riders are posting about how much they’ve enjoyed the event.”
She added: “As I work for Zero Waste Scotland, which runs the Love Food Hate Waste campaign, I was obviously concerned about how much food would be wasted at the control points that were expecting to cater for over 2,000 riders plus the volunteers.
Donations were made to the Innerleithen Swap & Share Shed (Image: Contributed) “Lots of local organisations have been wonderful at redistributing the leftovers from Innerleithen and another control point at Eskdalemuir. St Ronan’s Primary School, Hay Lodge Hospital, St Ronan’s care home, Peebles food bank and the Innerleithen Share Shed have all helped, so thank you to them all.”