4 Lane Double Helix
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- Setup Area: 60' x 40'
- Outlets: 2 110V Outlet within 100ft
- Age Group: 5+
- Attendants: Min. 1 Adult
- Booking OptionsMost PopularOvernightKeep the party going$1,620.00Standard4 Hours$1,200.00Extended4-8 Hours$1,440.00Weekend2 Day Rental$1,980.00
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- $1,200.00
4 Lane Double Helix
Our signature rental — two intertwined 50-foot obstacle courses with 4 racing lanes running simultaneously
There is nothing else in our inventory quite like the 4 Lane Double Helix. Two complete 50-foot obstacle courses are intertwined into one massive structure with four simultaneous racing lanes — meaning four participants can compete head-to-head at the same time, every single cycle. This is our signature rental, and it's built for events where you need maximum throughput, maximum visual impact, and an experience that guests will still be talking about weeks later. The go-to choice for large school events, church festivals, corporate gatherings, and community events across St. Charles County and beyond. Standard 4-hour rentals start at $1,200.
Review the details below → check availability → reserve your event date
* Two standard 110V outlets within 100 feet of the setup area are required. A 60' x 40' clear setup area is needed. Delivery fees are calculated at checkout based on your event address.
"Great family and great communication. We have used them several times and each time they are consistently on time and very professional. Best company to use for inflatables by far!"
— Verified Google Review, Backyard Party Rentals LLC
Simple, Transparent Pricing
No hidden fees. Delivery, setup, and pickup included in every rental.
Delivery fee calculated at checkout based on your event address. Check your date and see the full total →
Build the Ultimate Event Around the Double Helix
An attraction this big deserves a full event around it. These add-ons turn the Double Helix from a rental into a complete experience.
Events Built for the Double Helix
This isn't a rental you add to a lineup — it's the centerpiece that defines the event. The 4 Lane Double Helix is built for gatherings where scale, throughput, and experience all matter.
What Makes the Double Helix Our Signature Rental
🛡️ Fully Insured. COI Available at No Charge.
We carry full liability insurance and a Certificate of Insurance is available for schools, churches, parks, and any venue that requires one. Just request it at booking — no extra fees, no added paperwork.
📏 Space & Setup
A clear setup area of 60' x 40' is required. The Double Helix has a wider footprint than a standard linear course due to the intertwined design. Confirm your venue dimensions before booking and check for overhead obstructions.
Our crew handles the full setup. Delivery, inflation, anchoring, safety review, and complete pickup are all included. COI provided for any venue that requires one.
⚡ Power & Weather
Two standard 110V outlets within 100 feet of the setup area are required to power the blowers. No water source needed. A 100-foot extension cord is included.
Large events need solid weather contingency plans. Contact us the night before if conditions become a concern and we'll work with you on a reschedule that protects your event.
⚡ The Math Behind 4 Lanes — Why It Changes Everything
A standard 2-lane course cycles two participants at a time. The 4 Lane Double Helix cycles four. That isn't just twice as fast — it changes the entire dynamic of your event. At a school field day with 400 students, you're not running a slide. You're running a tournament. At a church festival, you're not waiting in a line. You're watching four people race simultaneously and choosing which lane to bet on.
The Double Helix is the only rental in our inventory specifically designed around the spectator experience as much as the participant experience. When four people are running simultaneously, the crowd naturally gathers to watch. That's what makes it a signature attraction rather than just another inflatable.
4 Lane Double Helix FAQs
The 4 Lane Double Helix is two complete 50-foot obstacle courses intertwined into one structure with four simultaneous racing lanes. Four participants can run at the same time, each through their own complete course with their own rock wall climb and slide finish. It's our signature rental — the largest and most unique obstacle course in our inventory, designed specifically for high-capacity events where throughput and spectator experience both matter.
With a 2-lane course, you cycle 2 participants per run. With the Double Helix, you cycle 4. For large events running hundreds of participants through a rotation, that's the difference between a smooth, fast-moving event and a slow, frustrated line. The 4-lane format also naturally creates a spectator draw — when four people are racing simultaneously, people stop and watch rather than just waiting their turn.
Standard 4-hour rentals start at $1,200. Extended 4–8 hour rentals are $1,440, overnight is $1,620, and weekend 2-day rentals are $1,980. Delivery, setup, and pickup are included in every rental with no hidden charges.
The 4 Lane Double Helix requires a clear setup area of 60 feet wide by 40 feet long. Because of the intertwined helix design, the footprint is wider than a linear course. Confirm your venue has this open space and check for overhead obstacles before booking.
Yes. We carry full liability insurance and a Certificate of Insurance is available for any venue that requires one — schools, churches, parks, and municipalities included. Just request it when you book at no additional charge.
The 4 Lane Double Helix is recommended for ages 5 and up. The scale and physical demands of the course make it better suited for school-age kids through adults. At least one adult attendant is required at all times during operation.
Contact us the night before if storms or high winds are in the forecast. We offer hassle-free weather reschedules — especially important for large-scale events where the stakes of cancellation are higher.
What Customers Are Saying
300+ five-star Google reviews from real customers across St. Charles County and beyond
Large Event Rentals in Wentzville & Surrounding Areas
We deliver signature inflatable rentals for school field days, church festivals, corporate events, and large community gatherings throughout Wentzville, Wright City, St. Charles County, Warren County, Lincoln County, and nearby Missouri communities.
⭐ Family-owned · Fully insured · COI available · Delivery and setup included
Check Availability for the 4 Lane Double Helix
Our signature rental books out well in advance for festival season. If you're planning a large event, don't wait.
Our 4 Lane Double Helix obstacle course rental in Wentzville, MO is a signature large-event attraction for schools, churches, corporate planners, and community festival organizers searching for high-capacity obstacle course rentals in O'Fallon, St. Peters, Lake St. Louis, Troy, Warrenton, Wright City, St. Charles County, Warren County, Lincoln County, and surrounding Missouri communities. Backyard Party Rentals, family-owned since 2019, provides clean safe inflatable rentals with professional delivery, setup, and pickup for school field days, church festivals, corporate team-building events, and large-scale outdoor gatherings where four-lane racing capacity makes a real difference.
