Certified by Rio Grande Mexican Restaurant • Sep 06, 2026
Tex-Mex RestaurantMexican RestaurantRestaurant
Delicious Tex Mex and Margaritas - in our completely renovated restaurant located in the heart of Old Town Fort Collins! Now open for dine-in service as well as food and margs takeout. Whether you're coming in to unwind and dine with us, bringing food home for the family or just grabbing some margs for a fun night at home, the Fort Collins Rio is a delicious escape.
Details
Dine-inAvailable
DeliveryNot available
TakeoutAvailable
Accepts reservationsAvailable
Requires reservationsNot available
Credit cardAvailable
DebitAvailable
Cash onlyNot available
Curbside pickupAvailable
Drive-throughNot available
BreakfastNot available
LunchAvailable
DinnerAvailable
VegetarianAvailable
RestroomAvailable
Free parking lotAvailable
Free street parkingAvailable
Welcomes familiesAvailable
Kid friendlyAvailable
Wheelchair accessible entranceAvailable
Wheelchair accessible restroomAvailable
Wheelchair accessible seatingAvailable
Location
Certified by Rio Grande Mexican Restaurant • Sep 06, 2026
Certified by Rio Grande Mexican Restaurant • Sep 06, 2026
Monday11:00 AM - 10:00 PM
Tuesday11:00 AM - 10:00 PM
Wednesday11:00 AM - 11:00 PM
Thursday11:00 AM - 10:00 PM
Friday11:00 AM - 11:00 PM
Saturday11:00 AM - 11:00 PM
Sunday11:00 AM - 10:00 PM
11/26/202611:00 AM - 10:00 PM
12/24/202611:00 AM - 10:00 PM
12/25/202611:00 AM - 11:00 PM
Menu
7 menus · 265 items
Explore offerings from Rio Grande Mexican Restaurant on 143 W. Mountain Avenue in Fort Collins, with popular appetizers, salad, soup, and nachos available at this location.
Lunch
44 items
Appetizers
Guacamole- Small
Pico de gallo, cilantro, cotija
Guacamole- Large
Pico de gallo, cilantro, cotija
Chile Con Queso
Cheese blend, pico de gallo
Shrimp Diabla
Peel-and-eat wild-caught shrimp served with chile de arbol dipping sauce
Crispy Jalapeno Caps
Fried jalapenos served with poblano ranch dipping sauce, fresh-cut veggies
Combines the soft taste of ice cream with authentic Tequila and a touch of coffee
Little Man Ice Cream
$3.25
Vanilla or Mexican chocolate
Vegan Menu
12 items
Appetizers
We are proud to provide vegan choices. However, please know that our kitchen is not a dedicated vegan kitchen. So, despite best efforts of our knowledgeable staff, cross contamination may occur.
Please follow recommended substitutions. (Ex. SUB)
Guacamole
/ 10.95
SUB - No cotija cheese
Pico de gallo, cilantro, cotija
Soup
Tortilla - NOT VEGAN
SUB - No cotija cheese
Cilantro, avocado, cotija, tortilla strips, house-made veggie broth
Green Chile
$7.95
SUB - Veggie green chile + no sauteed chicken
Green chiles, sauteed chicken, house-made broth
Nachos
We are proud to provide vegan choices. However, please know that our kitchen is not a dedicated vegan kitchen. So, despite best efforts of our knowledgeable staff, cross contamination may occur.
Please follow recommended substitutions. (Ex. SUB)
Rio Nachos
$11.50
SUB - No jack cheese
Black beans, jack, guacamole, pico de gallo, jalapenos, escabeche
Salad
We are proud to provide vegan choices. However, please know that our kitchen is not a dedicated vegan kitchen. So, despite best efforts of our knowledgeable staff, cross contamination may occur.
Please follow recommended substitutions. (Ex. SUB)
Rio Salad
/ 11.50
SUB - No cotija cheese
Mixed greens, avocado, grape tomatoes, carrots, pepitas, cotija
Balsamic vinaigrette or champagne vinaigrette
Burritos
We are proud to provide vegan choices. However, please know that our kitchen is not a dedicated vegan kitchen. So, despite best efforts of our knowledgeable staff, cross contamination may occur.
Please follow recommended substitutions. (Ex. SUB)
Black Bean Burrito
$13.50
SUB - No jack or cheddar cheese
House-made tortilla, cheese, fresh-cut lettuce & tomato, choice of sauce (veggie green chile or ranchero sauce)
Tostadas
We are proud to provide vegan choices. However, please know that our kitchen is not a dedicated vegan kitchen. So, despite best efforts of our knowledgeable staff, cross contamination may occur.
Please follow recommended substitutions. (Ex. SUB)
Guacamole
$11.95
SUB - No jack or cheddar cheese
Black beans, jack, cheddar, lettuce & tomato
Sides
We are proud to provide vegan choices. However, please know that our kitchen is not a dedicated vegan kitchen. So, despite best efforts of our knowledgeable staff, cross contamination may occur.
Please follow recommended substitutions. (Ex. SUB)
Garlic Roasted Veggies
$5.50
Rice
$2.95
Black Beans
$2.95
Escabeche
Fajitas
We are proud to provide vegan choices. However, please know that our kitchen is not a dedicated vegan kitchen. So, despite best efforts of our knowledgeable staff, cross contamination may occur.
Please follow recommended substitutions. (Ex. SUB)
Veggie
$21.95
SUB - No sour cream
Rice, black beans, grilled veggies, guacamole, sour cream, pico de gallo, flour tortillas, portabella & squash
Reviews
4.3
2,596 reviews
5 stars
1,591
4 stars
581
3 stars
219
2 stars
79
1 star
126
JA
Jim Anderson
5 days ago
5.0
Super fast and efficient service.. almost too fast! It was labo
JL
Jordin Lewis
Aug 31, 2026
5.0
We had Isaiah as our server and he was amazing! Great service and great food! My Dad forgot his phone and Isaiah ran it out to us!
EE
Ethan Elterich
Aug 28, 2026
5.0
Thaddeus was a tremendous server, constantly checking in and making sure our every need was met. He was truly charming, attentive and friendly. Rio is a Fort Collins institution, and never disappoints.
SM
Steve Menke
Aug 23, 2026
5.0
Best Mexican restaurant in FC.
Great food, attentive service, and lots of seating options. The back patio is worth the few extra minutes of waiting - if there is a wait. The bar booths or high tops put you right in the heart of the restaurant action or select the main restaurant tables or booths for a quieter lunch or dinner. And don't pass up their margaritas to accompany your meal.
ED
Elijah Dougherty
Aug 8, 2026
3.0
We recently had gone to the Rio in Boulder, enjoyed our food and time there so we stopped by the Fortcollins location expecting the same level of quality. Both trips the same entrees were ordered, birria quesadillas and birra burrito, the Fortcollins location did not stand up the the quality of the Boulder one, the quesadilla was burnt and dry and the burrito was dry comparatively. When ordering birria we were expecting juicy meat and plenty of the sauce but were not satisfied with the level at the Fortcollins location, we also ordered a side of queso that had the taste and appearance of velveeta cheese, it remained virtually untouched. Disappointed to have spent 80$ with tip to receive a lower quality than our last visit at another location.
Frequently Asked Questions About Rio Grande Mexican Restaurant
Do you offer happy hour specials?
Yes, we do! Check out our happy hour menu online which is available Monday through Friday from 3pm to 6pm!
Can you go to the Rio if you’re doing the keto diet?
The Rio has a variety of keto-friendly options available to our diners! Check out our blog post that outlines some of our favorite dishes that can be modified to be low carb.
Do you have a gluten-free menu?
Of course! Check out our gluten-free website on our website or talk with your server to find a delicious gluten-free TexMex meal!
Do you have a vegan menu?
Yes, of course! We are proud to offer vegan choices. Please know that our kitchen is not a dedicated vegan kitchen. Despite our best efforts, it is possible that cross contamination may occur.
Does Rio Grande Mexican Restaurant accept reservations?
Yes, Rio Grande Mexican Restaurant accepts reservations.
What are the brunch hours at Rio Grande Mexican Restaurant?
Brunch is served on Saturdays and Sundays from 11:00 AM to 4:00 PM. The restaurant is closed for brunch Monday through Friday.
Does Rio Grande offer happy hour specials?
Yes, happy hour is available Monday through Friday from 3:00 PM to 5:00 PM.
What are the regular dining hours at Rio Grande Mexican Restaurant?
Open Monday to Wednesday from 11:00 AM to 9:00 PM, Thursday from 11:00 AM to 11:00 PM, Friday and Saturday from 11:00 AM to 10:00 PM, and Sunday from 11:00 AM to 9:00 PM.
Does Rio Grande Mexican Restaurant offer takeout and pickup options?
Yes, they offer in-store pickup and curbside pickup for takeout orders.
Are there keto, gluten-free, or vegan menu options at Rio Grande?
Yes, there are keto-friendly, gluten-free, and vegan options available. Guests can check the website or speak to their server for details.
What payment methods are accepted at Rio Grande Mexican Restaurant?
They accept American Express, Cash, Discover, Mastercard, and Visa.
Where is Rio Grande Mexican Restaurant located?
It is located at 143 W. Mountain Avenue, Fort Collins, CO 80524, in Old Town Fort Collins.
Can I visit the nearby The Agave Room (The Rio) when I dine at Rio Grande Mexican Restaurant?
Yes, The Agave Room (The Rio), located nearby, is an event and concert venue you might enjoy before or after dining at Rio Grande Mexican Restaurant, enhancing your experience in Old Town Fort Collins.
Are there other dining options close to Rio Grande Mexican Restaurant?
Nearby dining options include Le Creperie, a French restaurant and cafe, and Walrus Ice Cream for desserts, perfect spots to visit after your meal or while exploring Old Town Fort Collins.
Is there a local brewery close to Rio Grande Mexican Restaurant for visitors to explore?
Yes, Gilded Goat Brewing Company, a brewery and bar, is nearby and offers additional beverage options for visitors to enjoy along with their visit to Rio Grande Mexican Restaurant.
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