Doris Hancock, 95, is walking the length of Hadrian's Wall to raise money for the charity Centrepoint.
The fundraiser, from Ambleside, received a special early birthday message from the charity's patron Prince William, to wish her well as she reached the halfway point.
Marti Errington-Dodds caught Doris as she reached her checkpoint, met with applause and a slice of cake.
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The 12.5 hour walkout by 63 GMB members got under way at 6am this morning and will continue until 6.30pm this evening.
37-year-old Graeme Haddon pleaded guilty to the offence which happened in his home village of Lamancha near West Linton at the weekend.
Laura Price was dragged into an alleyway, close to Penrith Leisure Centre, where she had her head jumped on and kicked "like a football".