Thank you to everyone who submitted a design already and messaged me with questions. I wanted to provide more insight into what we are looking for.
1. The poster orientation should be Portrait
2. We would like the poster to contain all drawing imagery, ie. no photos or photography
3. The style of the poster should have a "Retro" or "Art Deco" feel. I am attaching a few files to illustrate the "feel" of the poster in terms of muted colors, style, etc.
4. Our race is designed to test folks on their physical and mental abilities. As such participants need to be prepared for literally ANY challenge - Rock Climbing, Running, Swimming, Biking, Weight Lifting, CrossFit, Survival Skills, etc. As such the imagery should depict that. Parts of the event will happen in the darkness of the early morning, others during the middle of the day. Maybe a poster that starts in a forest or wooded area with the moon showing that fades into a daytime scene that could be a 2-person team with backpacks on running down a long stretch of road, or swimming or biking.
I hope this helps!
Update - Also, many designs feature the words - Physical, Mental, etc.
Instead of that text we would like to go in a different direction, using the different kinds of literary conflict - Man Vs. Man, Man Vs. Self and Man Vs. Nature. We won't be using the 4th Literary Conflict (Man Vs. Society). As such, a poster using the first three conflicts and depicting those conflicts would be interesting.
Lastly, no website or contact info should be listed on the poster.