Swazi 5k

The Swazi 5k is a race put on by my church to raise funds for the Swaziland Partnership, a mission of sorts. I signed up for the race entirely in support of the cause and thought it would be a good opportunity to shoot for a 5k PR.
The few weeks leading up to race day were fairly unproductive from a training standpoint. I've been learning some new duties/responsibilities at work and most of that has been taking my time. Running has sort of taken a back seat as of late.
Going into this race I knew I wasn't trained to run a PR so I just went into this with a fun run mentality and decided to just do my best.
The gun went off and I stuck with a small group of guys that were running a pretty decent clip from the beginning. I could feel my body taxing itself as I hadn't run this hard in quite some time. The lungs were burning a bit and the legs felt like they were filling up with concrete but I managed to press on.
Skipping ahead to the final two turns, about a quarter mile from the finish, I looked at my watch and notice the time was ticking over to 13 minutes. This wasn't possible. I knew I started my watch when the gun went off and so I was somewhat perplexed.
I slogged through the finish in about 14 minutes and 23 seconds but I knew this wasn't right. My best 5k so far has been a time of 20:22 and that was with training and feeling good.
It hit me pretty quick that a wrong turn was made or a turn was not taken because the guy that was way out in front of the whole field, following the motorcycle police officer pacing the leader came in after me.
It was fun, what little part of the 5k I did complete but it was discouraging that course Marshall's or whoever was responsible for making sure we ran the right course failed. I'm not mad at anyone in the race committee or the volunteers but I simply wish more attention to runners was paid.
Hopefully, the Geico Race for Freedom 10k on Oct. 1st will be a better race.