Recent social media posts
11/11/2026
For 98-year-old veteran Ross, Denny’s has been a familiar stop for many years. For his neighbor Sevastian, it was his first visit. Together, they shared breakfast, good conversation, and a reminder that sometimes the best moments happen around the table. ❤️
This Veterans Day, we’re honored to celebrate Ross and all the brave men and women who have served. Thank you for your service and sacrifice. 🇺🇸
Spending your ? Tag us!
Video by:
11/11/2026
For 98-year-old veteran Ross, Denny’s has been a familiar stop for many years. For his neighbor Sevastian, it was his first visit. Together, they shared breakfast, good conversation, and a reminder that sometimes the best moments happen around the table. ❤️
This Veterans Day, we’re honored to celebrate Ross and all the brave men and women who have served. Thank you for your service and sacrifice. 🇺🇸
Spending your ? Tag us!
Video by: RossTheVet
11/11/2026
thank you for your service 🇺🇸
only on Wednesday, November 11th, between 5am-11am local time, Veterans can receive a free original Grand Slam.
Includes active, non-active and retired military personnel. Dine in only. Must show valid Military ID or DD-214. At participating Denny's restaurants. Selection and prices may vary. Not valid for online orders. While supplies last. Beverage not included. No substitutions.
11/10/2026
This Veterans Day, breakfast is on us. ❤️
On November 11, we're honoring those who have served by offering active-duty, non-active and retired military personnel a FREE Original Grand Slam at participating Denny's nationwide.
Join us from 5 a.m. to noon local time. Thank you for your service!
11/09/2026
here 24/7 for any occasion btw
11/09/2026
ATLANTA, LAST NIGHT WAS A MOVIE ⚡️thank you Silly Goose & everyone who came to support 🤘see you again soon…
11/08/2026
Across every universe, it has and always will be the Diner Dipper.
Video by IG:
11/07/2026
already craving Thanksgiving dinner? Name one thing you’re thankful for… we’ll go first: Denny’s catering. 🦃🍽️
11/07/2026
shh!! my favorite show is on! Triple Play starting at $6.99
08/19/2026
At Denny's we're making your California dreams come true with ethically sourced California Avocados. They're so good and so good for you.
08/18/2026
Elevate any plate with Fresh California Avocados! Upgrade your next Slam, burger or app with California Avocados.
08/18/2026
The Avos we Love Most Come from the West Coast! Come and get that late night flavor and nutritious upgrade with sustainably farmed, ethically sourced California Avocados. Love avos? Comment below.
07/22/2025
By adding California Avocados, take every meal from great to perfect, and they are now in season! With sustainably farmed California Avocados, every Denny’s meal is a 10! Come and get everything you "avo" wanted today!
07/15/2025
By adding California Avocados, take every meal from great to perfect, and they are now in season! Make every Denny's meal a 10 just by adding locally and responsibly grown California Avocados. Come and get everything you "avo" wanted today!
07/28/2024
Avocados take every meal from great to perfect and they are now in season! Make every Denny's meal a 10 just by adding locally and sustainably grown California Avocados. Come and get everything you avo wanted today!
Address
731 W San Marcos Boulevard
San Marcos, CA
92069
To get to the restaurant located on W San Marcos Boulevard in San Marcos, you can take the Sprinter rail to the Cal State San Marcos Station and then walk southeast on West San Marcos Boulevard. Alternatively, if driving, take CA-78 and exit at Twin Oaks Valley Road. Turn onto West San Marcos Boulevard, and parking is available in the lot adjacent to the restaurant.
Opening Hours
| Monday |
5am - 10pm |
| Tuesday |
5am - 10pm |
| Wednesday |
5am - 10pm |
| Thursday |
5am - 10pm |
| Friday |
5am - 1am |
| Saturday |
5am - 1am |
| Sunday |
5am - 10pm |
Alerts
Be the first to know and let us send you an email when Denny's posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.
What people say
American restaurants are known for their classic comfort food and everyday value, and Denny's on W San Marcos Boulevard in San Marcos is no exception. For over 65 years, Denny's has been a place where people can come together over great food any time of day or night. With a menu that caters to the taste and dietary requirements of every guest, there is something for everyone at Denny's.
One of the standout items on the menu is the Sizzlin' Skillets, which includes new options like the Parmesan Chicken Sizzlin' Skillet and the Beyond Burger featuring a plant-based patty. But don't worry, all your classic favorites are still available too, like Moons Over My Hammy®, hand-dipped Milk Shakes, 100% Beef Burgers, and the world-famous Build Your Own Grand Slam®.
Whether you're in the mood for breakfast, lunch, dinner or dessert, Denny's has got you covered with an expansive menu that offers delicious and innovative options. And with services like takeout and waiter service available, it's easy to enjoy your meal in whatever way suits you best.
So if you're looking for a casual spot to relax and connect with friends or family over great food any time of day or night, head on over to Denny's on W San Marcos Boulevard in San Marcos. America's diner is always open and ready to serve up some delicious comfort food that will leave you feeling satisfied and happy.
