Firehouse Subs Grant St

10060 Grant St, Thornton
(720) 506-2993

Recent Reviews Order Online

Customers' Favorites

Kids Hot Turkey and Provolone Combo
Smokehouse Beef & Cheddar Brisket
Firehouse Steak & Cheese Combo
Firehouse Steak & Cheese
Sweet & Spicy Meatball
Spicy Cajun Chicken
Virginia Honey Ham
Turkey Bacon Ranch
Firehouse Meatball
New York Steamer

Menu

Limited Time Offer
Pepperoni Pizza Meatball Sub
Italian meatballs, marinara, extra provolone, crispy pepperoni and Italian seasoning on a toasted garlic bread roll.
King Hawaiian
Slow-smoked pulled pork, melted pepper jack, sweet & tangy slaw, sweet mustard sauce, and mayo on a toasted King's Hawaiian® bun.

Featured Subs
Spicy Cajun Chicken
Grilled, Cajun-seasoned chicken breast, jalapeños, melted pepper jack cheese, lettuce, onions, deli mustard, and our housemade Cajun mayo.
Turkey Bacon Ranch ™
Smoked turkey breast, pepper bacon, sharp cheddar cheese topped with peppercorn ranch, mayo, lettuce, tomato, and onion.
Hook & Ladder®
Smoked turkey breast and honey ham smothered with Monterey Jack, served Fully Involved® (mayo, lettuce, tomato, onion, deli mustard, and a pickle spear on the side).
Italian™
Genoa salami, pepperoni, Virginia Honey Ham, melted provolone, Italian dressing, and seasonings, served Fully Involved® (mayo, lettuce, tomato, onion, deli mustard, and a pickle spear on the side).
New York Steamer®
Corned beef brisket, pastrami, melted provolone, mustard, mayo, and Italian dressing.

Hot Specialty Subs
Hook & Ladder®
Smoked turkey breast and honey ham smothered with Monterey Jack, served Fully Involved® (mayo, lettuce, tomato, onion, deli mustard, and a pickle spear on the side).
Firehouse Meatball®
Italian meatballs, melted provolone, zesty marinara, and Italian seasonings. Best meatballs guaranteed! *Contains gluten
Sweet & Spicy Meatball
Topped with Captain Sorensen's Datil Pepper Sauce, red pepper flakes and provolone cheese. *Contains Gluten
New York Steamer®
Corned beef brisket, pastrami, melted provolone, mustard, mayo, and Italian dressing.
Italian™
Genoa salami, pepperoni, Virginia Honey Ham, melted provolone, Italian dressing, and seasonings, served Fully Involved® (mayo, lettuce, tomato, onion, deli mustard, and a pickle spear on the side).
Turkey Bacon Ranch ™
Smoked turkey breast, pepper bacon, sharp cheddar cheese topped with peppercorn ranch, mayo, lettuce, tomato, and onion.
Club On A Sub™
Smoked turkey breast, Virginia honey ham, crispy pepper bacon, and melted Monterey Jack, served Fully Involved® (mayo, lettuce, tomato, onion, deli mustard, and a pickle spear on the side).
Firehouse Steak & Cheese®
Sautéed steak with Provolone, topped with sautéed onions, bell peppers, mayo, mustard and a dill spear on the side.
Engineer®
Smoked Turkey Breast with sauteed Mushrooms and melted Open-Eyed Swiss, served Fully Involved® (mayo, lettuce, tomato, onion, deli mustard, and a pickle spear on the side).
Firehouse Hero®
Premium roast beef, smoked turkey breast, Virginia honey ham, and melted provolone, served Fully Involved® (mayo, lettuce, tomato, onion, deli mustard, and a pickle spear on the side).
Smokehouse Beef & Cheddar Brisket™
USDA Choice beef brisket smoked for 16+ hours, cheddar, mayo, Sweet Baby Ray's® BBQ Sauce.
Spicy Cajun Chicken
Grilled, Cajun-seasoned chicken breast, jalapeños, melted pepper jack cheese, lettuce, onions, deli mustard, and our housemade Cajun mayo.
Jamaican Jerk Turkey
Smoked Turkey Breast Topped with Jamaican Jerk seasoning, PepperJack Cheese, Mayo, lettuce,tomato,onion,and Jamaican Jerk sweet mustard sauce

Build Your Own Sub
Smoked Turkey Breast
Smoked turkey breast and Provolone, served Fully Involved® (mayo, lettuce, tomato, onion, deli mustard, and a pickle spear on the side).
Honey Ham
Virginia honey ham and provolone, served Fully Involved® (mayo, lettuce, tomato, onion, deli mustard, and a pickle spear on the side).
Premium Roast Beef
Roast beef and melted provolone, served Fully Involved® (mayo, lettuce, tomato, onion, deli mustard, and a pickle spear on the side).
Veggie
Onions, bell peppers, and mushrooms topped with Provolone, Monterey Jack and Cheddar Cheese and Italian dressing, served Fully Involved® (mayo, lettuce, tomato, onion, deli mustard, and a pickle spear on the side).
Pastrami
Pastrami and provolone, served Fully Involved® (mayo, lettuce, tomato, onion, deli mustard, and a pickle spear on the side).
Corned Beef Brisket
Corned beef brisket and melted provolone, served Fully Involved® (mayo, lettuce, tomato, onion, deli mustard, and a pickle spear on the side).
Grilled Chicken Breast
Grilled chicken breast and melted provolone, served Fully Involved® (mayo, lettuce, tomato, onion, deli mustard, and a pickle spear on the side).

Cold Subs
Tuna Salad
A blend of tuna, mayo, relish and black pepper topped with Provolone, served Fully Involved® (mayo, lettuce, tomato, onion, deli mustard, and a pickle spear on the side).

Salads
Salad-firehouse Salad™, Plain
Romaine, diced tomato, green bell pepper, cucumber and mozzarella
Italian Grilled Chicken Salad
Grilled chicken breast, Genoa salami, romaine, diced tomato, green bell pepper, cucumber and mozzarella
Hook & Ladder Salad
Smoked turkey breast & Virginia honey ham, romaine, diced tomato, green bell pepper, cucumber and mozzarella

Combos
Smoked Turkey Breast Combo
Smoked turkey breast and Provolone, served Fully Involved® (mayo, lettuce, tomato, onion, deli mustard, and a pickle spear on the side).
Honey Ham Combo
Virginia honey ham and provolone, served Fully Involved® (mayo, lettuce, tomato, onion, deli mustard, and a pickle spear on the side).
Premium Roast Beef Combo
Roast beef and melted provolone, served Fully Involved® (mayo, lettuce, tomato, onion, deli mustard, and a pickle spear on the side).
Hook & Ladder® Combo
Smoked turkey breast and honey ham smothered with Monterey Jack, served Fully Involved® (mayo, lettuce, tomato, onion, deli mustard, and a pickle spear on the side).
Veggie Combo
Onions, bell peppers, and mushrooms topped with Provolone, Monterey Jack and Cheddar Cheese and Italian dressing, served Fully Involved® (mayo, lettuce, tomato, onion, deli mustard, and a pickle spear on the side).
Firehouse Meatball® Combo
Italian meatballs, melted provolone, zesty marinara, and Italian seasonings. Best meatballs guaranteed! *Contains gluten
Sweet & Spicy Meatball Combo
Topped with Captain Sorensen's Datil Pepper Sauce, red pepper flakes and provolone cheese. *Contains Gluten
Pastrami Combo
Pastrami and provolone, served Fully Involved® (mayo, lettuce, tomato, onion, deli mustard, and a pickle spear on the side).
New York Steamer® Combo
Corned beef brisket, pastrami, melted provolone, mustard, mayo, and Italian dressing.
Corned Beef Brisket Combo
Corned beef brisket and melted provolone, served Fully Involved® (mayo, lettuce, tomato, onion, deli mustard, and a pickle spear on the side).
Italian™ Combo
Genoa salami, pepperoni, Virginia Honey Ham, melted provolone, Italian dressing, and seasonings, served Fully Involved® (mayo, lettuce, tomato, onion, deli mustard, and a pickle spear on the side).
Turkey Bacon Ranch ™ Combo
Smoked turkey breast, pepper bacon, sharp cheddar cheese topped with peppercorn ranch, mayo, lettuce, tomato, and onion.
Club On A Sub™ Combo
Smoked turkey breast, Virginia honey ham, crispy pepper bacon, and melted Monterey Jack, served Fully Involved® (mayo, lettuce, tomato, onion, deli mustard, and a pickle spear on the side).
Firehouse Steak & Cheese® Combo
Sautéed steak with Provolone, topped with sautéed onions, bell peppers, mayo, mustard and a dill spear on the side.
Grilled Chicken Breast Combo
Grilled chicken breast and melted provolone, served Fully Involved® (mayo, lettuce, tomato, onion, deli mustard, and a pickle spear on the side).
Engineer® Combo
Smoked Turkey Breast with sauteed Mushrooms and melted Open-Eyed Swiss, served Fully Involved® (mayo, lettuce, tomato, onion, deli mustard, and a pickle spear on the side).
Firehouse Hero® Combo
Premium roast beef, smoked turkey breast, Virginia honey ham, and melted provolone, served Fully Involved® (mayo, lettuce, tomato, onion, deli mustard, and a pickle spear on the side).
Tuna Salad Combo
A blend of tuna, mayo, relish and black pepper topped with Provolone, served Fully Involved® (mayo, lettuce, tomato, onion, deli mustard, and a pickle spear on the side).
Smokehouse Beef & Cheddar Brisket™ Combo
USDA Choice beef brisket smoked for 16+ hours, cheddar, mayo, Sweet Baby Ray's® BBQ Sauce.
Spicy Cajun Chicken Combo
Grilled, Cajun-seasoned chicken breast, jalapeños, melted pepper jack cheese, lettuce, onions, deli mustard, and our housemade Cajun mayo.
Jamaican Jerk Turkey Combo
Smoked Turkey Breast Topped with Jamaican Jerk seasoning, PepperJack Cheese, Mayo, lettuce,tomato,onion,and Jamaican Jerk sweet mustard sauce

Sides
Firehouse Chili
Made from the finest ingredients; sure to become one of your favorites.
Mac & Cheese
Made with a blend of 5 cheeses.
Soups
Side Salad
Chips
Choose from an assortment of chip varieties including Miss Vickies®, SunChips®, Lay's®, Baked Lay's®, and Ruffles®,
Garlic Bread
Cookie
Choose one or two freshly baked cookies including chocolate chip and oatmeal.
Brownie
Enjoy one of our chocolate brownies; a great way to end a meal.
Captain Sorensen's Datil Pepper Hot Sauce
Dessert Bundle 3
Create your perfect dessert bundle. Choose from brownies, freshly baked chocolate chip cookies or oatmeal raisin cookies. Available in quantities of 3.

Drinks
Bottled Soda
Bottled drinks vary by location. Some locations offer cans. Please ask about our selection.
Bottled Water

Kids' Combos
Kids Turkey Breast
Includes 12 oz. fountain drink and kid's treat*. *Upgrade to chips, cookie or brownie for an additional charge. Milk is available at select Firehouse Subs locations, check your local restaurant for details.
Kids Meatball
Includes 12 oz. fountain drink and kid's treat*. *Upgrade to chips, cookie or brownie for an additional charge. Milk is available at select Firehouse Subs locations, check your local restaurant for details.
Kids Honey Ham
Includes 12 oz. fountain drink and kid's treat*. *Upgrade to chips, cookie or brownie for an additional charge. Milk is available at select Firehouse Subs locations, check your local restaurant for details.
Kids Grilled Cheese
Includes 12 oz. fountain drink and kid's treat*. *Upgrade to chips, cookie or brownie for an additional charge. Milk is available at select Firehouse Subs locations, check your local restaurant for details.

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Recent Reviews

The guy with the dark ponytail working around noon today was SOOO PLEASANT!! So sweet addressing people by name and making sure they knew their orders were coming! And my sammie was BOMB!!! Thanks guys!!!
February 2026
This location was so sweet. They welcomed me right when I entered and they delt with my annoying gluten allergy so perfectly. Super awesome staff, very clean area, and smells that make you more hungry right when I walked in! 10/10
February 2026
Shout out to Georgia and Brennan at Firehouse Subs in Thornton!
Both were incredibly friendly, attentive, and made the experience genuinely enjoyable. They were helpful, efficient, and brought great energy to the store. You can tell they care about the quality of service and the customers they serve. Because of them, this location really stands out. Much appreciated—keep up the great work!
January 2026

More Reviews

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Firehouse Subs Grant St

10060 Grant St, Thornton, CO 80229
(720) 506-2993