Yes you can.
All entrants of the Mini event (ages 3-8) are sent an Adult bib in their run pack, this is for the accompanying adult to wear on race day if they want to run alongside them.
There will be a question on the entry form for Junior events (age 9+) which asks if you would like someone to accompany the child on race day. If yes, an Adult bib will be sent with the run pack for them to wear during the run.
Adult bibs can also be collected from the information point on race day.