Two of the themed starts to the Morrisons Great Birmingham 10k have now closed due to their popularity.
The event on May 3 will have four different waves where music from the 1970s, 80s, 90s and today will be played to spur the runners on as they cross the start line.
Organisers have now had to close entries to the 80s and 90s starts due to being overwhelmed with demand.
Runners are still being accepted for the 70s and contemporary starts and also the walking wave for anyone who wants to tackle the course at a more leisurely pace.
David Hart, communications director for the Morrisons Great Birmingham 10k, said: "We are delighted how the music idea has captured people's imagination.
"We want the day to be a real running party with the emphasis on fun and hope to see lots of great fancy dress."
For more information and to enter the 10k visit www.greatrun.org.