So far she has raised around £85,000 for Spinal Research, a charity which funds medical research around the world to develop reliable treatments for paralysis caused by a broken back or neck.
Ms Lomas has walked around two miles a day, cheered on by husband Dan, mother Joyce and 13-month-old daughter Maisie.
But Ms Lomas will not appear in the official results or receive a medal when she finishes, organisers confirmed, as competitors have to finish the course on the same day to qualify for a medal.
A number of celebrities have also lent their support by walking a mile alongside her, including TV presenter Gabby Logan and husband, former international rugby star Kenny, and TV presenter and adventurer Ben Fogle.
The mother-of-one broke her neck, back and ribs and punctured a lung when her horse Rolled Oats threw her off as she took part in the Osberton Horse Trials in Nottinghamshire in 2007. Reference:: Sikh Philosophy Network http://www.sikhphilosophy.net/showthread.php?t=38497
The £43,000 ReWalk suit, designed by Israeli entrepreneur Amit Goffer, enables people with lower-limb paralysis to stand, walk and climb stairs through motion sensors and an onboard computer system.
A shift in the wearer's balance, indicating their desire to take, for example, a step forward, triggers the suit to mimic the response that the joints would have if they were not paralysed.
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