769 Lock St, Peterborough, ON K9J 8S8

Peterborough's favourite breakfast since 1938

Lock and Braidwood: where community gathers

For years, this corner has been a place where Peterborough gathers. Now known as Lock Street Diner, and formerly Thurston’s, we’re carrying forward the same spirit that made this diner a local institution: familiar flavours, fair prices, and a seat for everyone.

Open 8-2 Tuesday-Sunday
an image of Lock street diner in Peterborough
french toast
eggs benedict

Client Testimonials

We just had the most incredible lunch/breakfast here! The Greek salad and beef barley soup are wildly delicious! The staff are incredible and the atmosphere is warm and relaxing! If you live in the area or are just passing through, you must visit! You will not be disappointed! The food is made with love!
Mary Grace Clarke-via google reviews
Went for breakfast this morning and had an enjoyable experience. Cozy diner atmosphere. Friendly and prompt service. The food tasted great and came out quickly. The prices are great. Highly recommend and I will definitely be back.
Norma Jean A-Via Google Reviews
This place has become me and my boyfriend's favourite breakfast place. Very welcoming environment, good food, and great service. Our server is also wonderful 🙂 thank you for a great experience every time we're here ♥️♥️
Danielle Macneil-via google reviews
various NHL and OHL memorobilia on a wall

While you are here be sure to check out the hockey wall of fame

Be sure to check out our hockey wall. Owner Jim Malakos has been collecting Peterborough Petes and NHL memorabilia for years—much of it gifted by Petes players themselves, many of whom went on to the NHL. It’s a little piece of local hockey history, right in the diner.