This year's visit is the seventh trip organised by the Scottish Borders Link of Chernobyl Children Lifeline charity which was founded in 2001.
The visit will give the four boys and eight girls a much-needed healthy break, helping to strengthen their immune systems and slowing down the possible onset of illnesses such as cancer, heart disease or respiratory problems in later life.
The children are still affected by the contamination caused by the Chernobyl nuclear disaster of 1986 and a month in the Borders adds two years to their life expectancy.
This year's visit includes, for the first time, hosting by families in St Abbs, Ednam, Tweedbank and Innerleithen.
Last Thursday the children were guests of the Southern Upland Roving Archers (SURA) at Westruther where they were able to try their hand at archery.
SURA members Ted and Donna Marie Fordy are one of the host families and they arranged the fun event.
The organising committee have arranged visits to local dentists and opticians - which is important for the children's general well-being - and also other outings to places such as Coldingham beach, St Abbs lifeboat station, Galashiels fire station, McDonald's and Bowhill, a meal at Kingsknowes Hotel in Galashiels, and the visit will end with a party at Walkerburn Rugby Club.
New host families or helpers are always welcome. Anyone interested in helping in any way whatsoever should give Fraser Simm (01896 730297) or Sarah Barton (01835 840333) a ring.