20th Annual Missouri River Irish Fest 2026!
Where:
Lewis & Clark Boathouse Parking Lot, St. Charles, MO riverfront
Hours:
Friday 5/22 5-10
Saturday 5/23 11am – 10pm
Sunday 5/24 12am – 5pm (Mass @10AM)
Entry Fee:
$5 Individual
$20 Family (Immediate) of 4 or more
First Responders and Military Free
What to expect:
Live Music
Wee Folk Activities
Retail and Food Vendors
Beer and Craft Cocktails
Cultural Exhibit & Speakers
Irish Pub (whiskey and Five Farms tastings, fun pub contests, Guinness Perfect Pour)
and so much more!
The Great Shamrock Hunt
Sponsored by Shamrocks Pub & Grill
Get ready for one of the most fun traditions leading up to the 2026 Missouri River Irish Festival.
Beginning Friday April 3rd, the Great Shamrock Hunt invites the community to search for hidden shamrocks placed throughout St. Charles County.
Each week, we’ll post clues on our Missouri River Irish Festival Facebook page pointing you toward locations where official festival shamrocks have been hidden.
If you find one, you’re in luck.
Each shamrock serves as your free admission pass to the 2026 Missouri River Irish Festival, happening May 22–24 at the Lewis & Clark Boathouse Parking Lot on the St. Charles Riverfront.
Find a shamrock, snap a photo, share it online using #MRIF2026, and you’ll be entered for a chance to win prizes — including the Pot O’Gold Grand Prize.
How It Works
- Follow the Missouri River Irish Festival on Facebook.
- Beginning Friday April 3rd, we will post weekly location clues on Facebook.
- Use the clues to search for hidden shamrocks located throughout St. Charles County.
- If you find one:
- Snap a photo of the shamrock.
- Post your photo publicly on social media using the hashtag
#MRIF2026 - Your post will enter you for a chance to win festival prizes.
- Bring your shamrock with you to the festival — it serves as your free admission pass.
Prizes
Participants who share their shamrock discoveries on social media will be eligible to win prizes including:
• Gift cards from local businesses
• Festival merchandise
• Sponsor prizes
• The Pot O’Gold Grand Prize
Some prizes may contain alcohol or alcohol-related items. These prizes may only be awarded to individuals 21 years of age or older with valid identification.
Additional family-friendly prizes will also be available for younger participants.
Official Rules
Eligibility
The Great Shamrock Hunt is open to participants of all ages.
Participants under the age of 18 should have permission from a parent or guardian to participate.
Prizes that include alcohol or alcohol-related items may only be awarded to individuals 21 years of age or older with valid identification.
Entry
To qualify for the prize drawings:
• Locate an official Missouri River Irish Festival shamrock
• Take a photo of the shamrock
• Post the photo publicly on social media using #MRIF2026
Entries must remain publicly visible through the end of the festival.
Entry Limit
To ensure fairness and allow as many people as possible to participate:
Only one entry per person is permitted.
Participants who locate additional shamrocks are encouraged to leave them for others to discover.
The festival reserves the right to disqualify duplicate entries or entries submitted by the same participant using multiple accounts.
Admission Pass
Each official shamrock also serves as one complimentary admission pass to the 2026 Missouri River Irish Festival, held May 22–24 at the Lewis & Clark Boathouse Parking Lot on the St. Charles Riverfront.
Shamrocks must be presented at festival entry for admission.
Shamrocks are limited and available while supplies last.
Prize Drawings
Eligible entries will be entered into prize drawings.
Winners will be selected by random drawing from all eligible entries.
Prize drawings may take place during the festival weekend or shortly after the event.
Alcohol-Related Prizes
Some prizes may include alcohol or alcohol-related items.
These prizes may only be awarded to winners 21 years of age or older with valid identification.
If the selected winner is under 21, an alternate prize may be awarded.
Winner Notification
Winners will be contacted through the social media account used to submit their entry or other contact information provided.
If a selected winner does not respond within 48 hours, another winner may be selected.
Participation Guidelines
Participants agree to:
• Respect private property
• Follow all local laws and safety guidelines
• Search only in publicly accessible areas
Shamrocks may be hidden at public locations and participating businesses throughout St. Charles County.
The Missouri River Irish Festival and its sponsors are not responsible for injuries, damages, or losses incurred while participating.
Final Authority
The Missouri River Irish Festival reserves the right to interpret these rules and make adjustments to the promotion if necessary to ensure fairness and safety.
What to Look For
Participants will be searching for official Missouri River Irish Festival shamrocks hidden throughout St. Charles County.
Each official shamrock:
• Serves as one free admission pass to the 2026 Missouri River Irish Festival
• May be used to enter the prize drawing when posted publicly with #MRIF2026
• Will feature official festival branding
Only official shamrocks qualify.
Hunt Tracker
Follow along as the hunt unfolds across St. Charles County.
• Weekly clues posted on Facebook
• Shamrocks hidden at participating locations
• Pot O’Gold Grand Prize still in play until announced
Check back often for updates.