What Size Restroom Trailer Do I Need? Colorado Guest Count Guide
One of the most common questions we get from couples and planners is, “What size restroom trailer do we need for our event?” It can feel confusing at first, but once you understand guest flow and Colorado’s unique event conditions, the answer becomes straightforward.
Below is a simple guide to help you choose the right trailer size for weddings, parties, and corporate events across Colorado.
Recommended Trailer Size Based on Guest Count
These are real-world recommendations based on what works best for Colorado events:
Up to 75 guests
Recommended: 2-Station trailer
Ideal for backyard weddings, elopements, intimate gatherings
75–150 guests
Recommended: 3-Station trailer
Most popular choice for medium-sized weddings
150–300 guests
Recommended: 5-Station trailer
Best for weddings with bars, dancing, and long timelines
300+ guests
Recommended: Two trailers (for example, a 3-Station and a 5-Station)
Works for festivals, markets, corporate events, and multi-day gatherings
A good rule for Colorado: when alcohol is served, restroom usage doubles. Leaning up one size is often the better choice.
Why Guest Count Matters More in Colorado
Colorado’s event conditions naturally increase restroom usage. Here’s why:
Altitude makes guests drink more water
Many wedding venues are outdoors or on private land
Weather can shift from hot to cold quickly
Colorado weddings often last eight to twelve hours
These factors increase traffic to the restroom trailer.
Best Trailer Sizes by Event Type
Weddings
50–125 guests: 3-Station
125–200 guests: 5-Station
200–300 guests: 5-Station or 5-Station plus an ADA option
Weddings have multiple peak moments, so slightly oversizing is smart.
Corporate Events
Up to 150 guests: 3-Station
150–300 guests: 5-Station
VIP or executive groups often prefer the 5-Station
Festivals and Multi-Day Events
150–300 guests: 5-Station
300–500 guests: Two trailers
Multi-day events: Consider pump-outs or an attendant
When You Should Add a Second Trailer
A second trailer is helpful when:
Your guest count is over 250
You want separate men’s and women’s restrooms
The event has more than one activity zone
The event lasts more than six hours
You need ADA accessibility
Mountain Events vs. City Events
Mountain weddings require more restroom capacity than Denver or Boulder events. This is due to:
Increased water intake at high elevation
Limited alternative restrooms
Weather that drives guests indoors
Terrain that slows restroom movement
For example, a 150-person wedding in Denver may work with a 3-Station, while a 150-person wedding in Vail typically needs a 5-Station.
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