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Clayton, California

← Eat & Drink

Relentless Grind Coffee Company

A low-key coffee spot tucked inside Roadside 22. Grab a cold brew and a bagel, or hang around inside or on the patio.

Inside Roadside 22.

The patio out front: tables and chairs behind a railing, folded umbrellas and string lights, with people at the far end.
Photo: the founder
  • Inside Relentless Grind Coffee: a long counter with stools on one side, tables and a bench along the other, string lights overhead and a wall of wine bottles at the back.
    Photo: the founder
  • The Relentless Grind Coffee menu standing on the counter inside Roadside 22, a seasonal drinks sign beside it and beer taps behind.
    Photo: the founder
  • A sidewalk sign outside the door reading "Relentless Grind Coffee — located inside Roadside 22", with an arrow.
    Photo: the founder
Address
5439 Clayton Road, Suite E-F, Clayton, CA 94517
Hours
Thursday to Sunday, 7:00 am to 12:00 pm

On record

  • Its 2026 featured foundation is High Mountain Heroes, according to the company.

Short for now.

About

Relentless Grind is tucked inside Roadside 22, which is worth knowing before you go looking for a separate coffee shop. There's a long counter, tables and booth seating inside, plus a patio out front.

I stopped in on a Sunday morning and got a cold brew with a splash of vanilla and cream, plus a jalapeño bagel with cheese. Both were fantastic and a great way to start my Sunday.

What to order

  • Cold brew with a splash of vanilla and cream + jalapeño bagel with cheese.

Good for

  • Sunday morning coffee, meeting someone for coffee, or hanging around instead of just grabbing it to-go.

Insider tip

Don't look for a separate storefront — Relentless Grind is inside Roadside 22.