Yes, but be aware that your team will NOT be eligible to compete for the team awards unless there are at least five people running in the same category/distance. To be eligible for team awards, at least five members must be registered under the same race category. Teams are eligible to win under both race categories (10K and 5K) only if at least five members are registered under both race categories. If your team does not wish to compete for awards you still must have five team members but you are free to have these members in any or all race categories.
I love being able to race with a good group of friends. What an amazingly fun event!