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Location: Boise, Idaho
The Grand Slam Challenge
Welcome to The Grand Slam Challenge, a self-guided, self-paced adventure brought to you by Trail Fridays! The Treasure Valley’s Grand Slam includes four iconic local peaks: Kepros, Cervidae, Heinen, and Lucky Peak. Whether you spread them out or push through in a single weekend (some have even completed all four in under 24 hours!), this challenge is about showing up for yourself in a big way.
These aren’t just hikes—they’re treks, and each one comes with steep grades, rugged terrain, and the kind of effort that demands preparation and grit.
At Trail Fridays, we believe movement, connection, and purpose are key to physical and mental wellness. The Grand Slam Challenge is an invitation to find all three. Move your body through Idaho’s wild beauty. Connect with community, with resources, with a higher power—or simply with yourself. And give purpose to every step. Whether you’re chasing a summit, chasing a feeling, or just looking for a reason to show up—this challenge is for you.
Challenge Details
Take on any or all of the four Grand Slam peaks on your own schedule. The first 25 individuals to summit each peak will earn a custom summit token, provided by Trail Fridays. You don’t have to complete all four—each trek earns its own reward.
Some people take weeks or months to finish. Others do them back-to-back. There’s no set order and no end date—just your adventure, your way.
This challenge is completely free to join, but if it adds something meaningful to your journey, we’d love for you to consider making a donation to Gr8ter. Your support helps keep our mental health–focused programming going strong.
Rules & Trailhead Info
This is a self-paced, self-reported challenge. You are responsible for your own navigation, safety, and decisions on the trail.
There may be multiple starting points for these peaks, but the options below are the most common and accessible.
Kepros
Map Link: https://maps.app.goo.gl/N3Zv1B5q2bbZAwfp8
Route Info: https://www.alltrails.com/trail/us/idaho/kepros-mountain-trail
Cervidae
Map Link: https://maps.app.goo.gl/SjVUSYw8y3snrAT47
Route Info: https://www.alltrails.com/trail/us/idaho/cervidae-peak
Heinen
Map Link: https://maps.app.goo.gl/nHkNpGPoFuFSMFpu7
Route Info: https://www.alltrails.com/trail/us/idaho/mount-heinen
Lucky Peak (aka Shaw Mountain)
There are two common routes:
Route 1 – via Adelmann
Map Link: https://maps.app.goo.gl/hhe6vHqHjFH18KsY8
Route Info: https://www.alltrails.com/trail/us/idaho/lucky-peak-via-adelmann
Route 2 – via Homestead
Map Link: https://maps.app.goo.gl/EGAYYGd3ttbrHnmi6
Route Info: https://www.alltrails.com/trail/us/idaho/lucky-peak-summit
Important Reminders
- Obey all local laws and posted regulations.
- Bring ample water, nutrition, layers, and safety gear (our awesome Partner, Fleet Feet can help with these at their Meridian AND Nampa locations. They can also help assess what additional gear you may need!)
- Check trail conditions and weather before heading out.
- These are steep, strenuous treks—know your limits and go prepared.
Trailhead Notes
- There are no bathrooms at the trailheads—please plan accordingly.
- Cell reception is limited in many areas—download maps in advance and let someone know your plan.
- Always practice Leave No Trace principles and respect trail etiquette.
Summit Tokens
Trail Fridays is offering custom summit tokens for the first 25 individuals to complete each peak. A total of 25 tokens are available per summit, and you do not need to complete all four to receive one. Once your trek is verified, pickup details will be shared with qualifying participants.
Uploading Challenge Results
Ready, set, climb! After completing one of the Grand Slam peaks, upload your results on RunSignUp as soon as possible. The first 25 participants to upload verified completions for each peak will receive a free summit token, so don’t delay! Track your progress, celebrate your effort, and help us recognize your accomplishment!
You can upload your results here: https://runsignup.com/Race/ID/Boise/TrailFridaysGrandSlam
How to Submit Your Results
Have more than one summit to complete? You can log your results separately for each peak as you go!
Share Your Journey
We’d love to follow along! Share your photos, reflections, and summit stories in our Facebook group at www.facebook.com/groups/761503389401044, or on Instagram by tagging @trailfridays and using the hashtag #trailfridays. Let’s celebrate every step, summit, and story together.
About the Challenge
The Grand Slam Challenge—summiting Kepros, Cervidae, Heinen, and Lucky Peak—was originally created by Tom Lopez, a respected local author of Idaho: A Climbing Guide and Idaho: A Hiking Guide. His work has inspired countless outdoor adventures across Idaho, and we’re proud to carry that tradition forward through Trail Fridays. Read more here
Promoting Physical and Mental Wellness
At Trail Fridays, every challenge is about more than just the climb. It’s about growth, connection, and discovering just how strong you really are. The Grand Slam Challenge embodies our mission: encouraging people to push their limits, explore the outdoors, and find joy in the journey. Learn more about Trail Fridays at: www.trailfridays.com
Trail Fridays is a project of Gr8ter, Inc., a 501(c)(3) nonprofit organization. Your participation supports our mission to empower people to overcome mental health struggles in order to live the lives they desire. www.gr8ter.org
Choose from 4 race distances available for Trail Fridays - Grandslam Challenge in Boise, ID. Registration includes timing, finisher medals, and post-race refreshments.
