This is the third event of its kind and takes place at Lincolnshire Showground on Saturday, May 13.
The colour dash 5k route has various coloured paint stations dotted about, ensuring participants get sprayed every kilometre.
Entrants must be over 5-years -old, and anyone under 16 must also be accompanied by a paying adult.
Early bird tickets are £15 for adults and £5 for children. The deadline to buy early bird tickets will close on March 1.
Included in the registration fee is a fundraising pack, a pair of neon sunglasses, a bottle of water, a poncho and a commemorative medal.
To register for the event, go to www.stbarnabashospice.co.uk/cd17.