Event Details

Race Date:
Friday, October 6, 2017-Sunday, October 8, 2017

Registration Cost:
$230 before June 1
$250 before July 1
$275 before August 1
$300 thereafter

Race Length:
101.85 Miles

23,200 / 23,200 ft

Time Limit:
38 Hours


Registration Limit:
300 Entries

Additional Information

Grindstone 100

Swoope, VA

227/300 people have registered for this event online. Are you one of them?

Online Registration

Registration Information

Single Registration Price *

* Final price may vary depending on the selected options. This price applies to online registration only.

Race Waivers

Please read any waiver carefully. It includes a release of liability and waiver of legal rights and deprives you of the ability to sue certain parties. Do not agree to this document unless you have read and understood it in its entirety. By agreeing electronically, you acknowledge that you have both read and understood the text presented to you as part of the registration process. You also understand and agree that events carry certain inherent dangers and risks which may or may not be readily foreseeable, including without limitation personal injury, property damage or death. Your ability to participate in the event(s) is/are subject to your agreement to the waiver and by agreeing herein, you accept and agree to the terms of the waiver and release agreement.

Waivers: Grindstone 100 Waiver | eco-x Waiver

You must be over 18 years of age OR the parent/legal guardian of a minor under 18 years of age OR the legal guardian of an incapacitated and/or mentally challenged person in order to agree to the waiver.

One last thing, is all your information correct? If so please continue

Additional information about the event

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!

For additional information visit our website!

eco-x race registration

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