Wootton Bassett Ranger Guide Jess Kelly, 18, has presented £550 to Wiltshire Air Ambulance and the Wiltshire North Guiding Centre appeal.
Jess, of Britannia Crescent, Lyneham, raised the money by taking part in this year's Devizes to Westminster canoe race.
The former Young Leader with the 1st Lyneham Brownies spent the summer as a member of the UK service team which helped staff the third Russian Scout and Guide Jamboree at Saratov.
She was a member of the water activity team and was one of only six members of the Guide Association in the 50-strong service team composed chiefly of Scout Association members.
She is now studying for a degree in Adventure Recreation.
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