"We are excited mayor King has proved he is child-friendly by accepting our invitation," said Shefali.
Shivani commended fellow organisers Arlo Oliver, Eva-May Oliver and Ropafadzo Kunaka who have joined her and her sister in preparing for this year's event.
"Teamwork is always important. Shifeli and I did not initiate this project for personal glory, and we want as many children as possible involved in the planning and execution of the project to ensure that we change the lives of children in another part of the world.
"The more hands are involved, the bigger the results that can be achieved," said Shivani.
Two fun runs have previously been held and the proceeds have contributed towards buying books for a Zimbabwean school, shipment of books to Zimbabwe and the recording of a song for an international music album with songs about reading and libraries.
The album is expected to be released this year.
In 2015, the twins were appointed alongside other New Zealand children as goodwill ambassadors of the trust, positions they still hold.
That, combined with their fundraising efforts, has seen them nominated for the Genesis Energy Shine-a-light award.
At the time of printing they were leading the pack in votes.
Zimbabwe Rural Schools Library Trust New Zealand chairman Driden Kunaka said Shefali and Shivani were a joy to work with.
"They are passionate, visionary and caring, and have inspired many," said Driden.
"Most exciting is the thought that the children are doing work that benefits less privileged children in another part of the world."
He was expecting a bumper crowd at the fun run/walk.
"Between 50 and 60 people have participated in each of the two previous runs, but we aim to triple that this year.
"We are aiming at raising $10,000 from this event through registration fees and donations, which will go towards buying a container and ship the container full of books to Zimbabwe."
You can vote for the sisters in the Shine-a-light awards at https://shinealight.kiwi/story/VGsb8crg9kG-CwjS2hUr-g.
Registration is free for under-5s, $5 for under-18s and $10 for adults. A family package is $25.
To register, deposit your registration fee in the Trust's bank account (03-1355-0850295-00 or 01-0450-0165486-00), giving your name in the reference field then email info@zimlibrarytrust.com giving the name(s) of person(s) covered by the deposit. Alternatively contact Driden Kunaka on 021 059 9128.