Grindstone 100

Grit, endurance, temporary loss of sanity. You might need all of these if you want to attempt Grindstone. If you want to finish, well, just keep in mind this is, without a doubt, the hardest 100 miler east of the 100th meridian. Now that you're hooked, Grindstone is going to be an incredible adventure for each and every entrant. From the beautiful start/finish location at Camp Shenandoah to the monster climbs and the solitude of single track ridge running, you just can't beat Grindstone... but you can try! Come and join us for a wonderful event and experience what this 100 mile course has to offer you. It will be an experience you'll never forget! Grindstone is event #4 in the Beast Series


2023 Online Entry Is Not Open
We will be open soon so please check back.

ACCURATE FINISHER SHIRT SIZING CANNOT BE GUARANTEED TO THOSE WHO ENTER AFTER JULY 15. You also must be entered by July 15 to get a personalized race bib.

Online Entries are Currently Closed.


Registration for the 2023 race will be open soon. Please check back for updates!

Race Details

  • Race Date

    Start: Friday September 16, 2022 | End: Sunday, September 18 2022

  • Entry Fee

    $250 before Jan 1
    $300 before May 1
    $350 before July 1
    $375 thereafter

  • Distance

    101.85 Miles


    23,000 /23,000 ft

  • Location

    Swoope, Virginia

  • Start Time

    6:00 PM

  • Time Limit

    38 Hours