Run100s ("Run Hundreds") - A Not-For-Profit UltraRunning Corporation

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Schedule of the 90 North American 100-milers:
Ancient Oaks // Angeles Crest // Arkansas // Badger Mt. // Bartram // The Bear // Beast of Burden(Summer) // Beast of Burden(Winter) // Bighorn // Black Hills // Born to Run // Boulder // Buffalo Run // Burning River // Cactus Rose // Cajun Coyote // CAT // Cascade Crest // Chimera // Coyote Springs // Endurance Challenge // Georgia Jewel // Grand Mesa // Graveyard // Grindstone // Haliburton // Hallucination // Hardrock // Headlands Hundred // Heartland // HURT // IMTUF // Iron Horse(FL) // Iron Horse Ultra(CAN) // Javelina Jundred // Jerseyville // Kettle Moraine // KEYS100 // Labor of Love // Laramie // Leadville // Lean Horse // Long Haul // Lost Soul // Lumberjack // Mark Twain // Massanutten // McNaughton // Moab // Mogollon Monster // Mohican // Nanny Goats // New Jersey // Oil Creek // Old Dominion // Ozark // Philadelphia // Pigtails Challenge // Pine to Palm // Pine Creek // Pinhoti // Plain // Pony Express // Potawatomi // Pumpkin Holler // Rio del Lago // Rocky Raccoon // Rocky Road // Run-de-Vous // Run Rabbit Run // Salt Flats // San Diego // Santa Barbara // Slickrock // Sulphur Springs // Superior // Susitna // Swan Crest // Tahoe Rim Trail // Umstead // Vermont // Viaduct Trail // Virgil Crest // Wasatch // Western States // White Mountains // Yellowstone-Teton // Yukon Arctic // Zion // Zumbro
Calendars/schedules
No. Calif. ultras (< 100 miles) // So. Calif. ultras // Oregon trail ultras // Washington trail ultras // UK Ultras // Other ultras (over 850 venues, 28.4 to 3100 miles) // Trail Running Tours
Reports (over 500, since '95)
Ultra Slams & Series
The Grand Slam of Ultrarunning // Midwest Grand Slam of Ultrarunning // The Last Great Race // Western Slam // Eastern Slam // Rail Trail Slam // Rocky Mt. Slam // Californa Slam // All Amer. Mtn. Slam // Super Slam // Arctic Slam // Extreme Triple Crown // Tejas Trails 300 // Tejas Hell // Gnarly Bandit // Montrail Ultra Cup // TrailRunner Trophy Series // NoCal Ultra Grand Prix // SoCal Ultra Grand Prix // Oregon Trail Ultras // Canadian Ultras // Ultrarunner.net Race Series // Western New York Ultras // UMTR Ultra Series
Clubs
BAUR // Buffalo Chips // Club Fat Ass // Coastside Running Club // HURT // Pacific Striders // Palo Alto Run Club // Quicksilver Running Club // SC Striders // SURF // Tamalpa // TATUR // Team Slug // Trail Animals Running Club(TARC) // Ultraladies // UltraRunning Matters
Web sites/pages that I manage/host/etc. (11,975+ pages)
Grand Slam of Ultrarunning // Lake Sonoma 50 // Miwok // Quad Dipsea // Ruth Anderson Ultras
Photos, including albums for:
Angeles Crest // Avalon 50m // The Bear // Cascade Crest // Catalina 100k // Coyote 4 Play // Devil's Backbone // Hardrock // H.U.R.T. // Javelina Jundred // Leadville // Lean Horse // Massanutten Mtn. // Old Dominion // Quad Dipsea // Rio del Lago // Rocky Raccoon // Umstead // Vermont // Wasatch Front // Western States // Zane Grey
Photos by: Don Lundell, Jack Jewell, Jakob Herrmann, & Steve Pero
Bios of 2340+ ultrarunners (not maintained); some Photos

Blogs, Forums & Podcasts
Trail Runner Nation podcasts & other resources
URP: UltraRunner Podcast collection of podcasts, etc.
A Trail Runner's Blog (by Scott Dunlap)
"Going the Distance!" Blog (by Carey Smith)
H.U.R.T.'s Blog (Hawaiian ultras)
iRunFar.com Trail/Ultra Resource
Dirty Inspirations (by Terri Schneider)
Wasatch Speed Goat (by Scott Mason)
Multiday Running Blog // Badwater Blog
Arctic Grand Slam (by Sarah Lowell)
Mister Tristan (by Gary Bruner)
Run 100 Miles (by Christian Griffith)
Undefeated Running (by Adam Gothelf)
Your First Ultra (by David Tosch)
100 mile podcast on-going audio series
Coaching & Camps
Andy & Kim Holak's trail running adventures
AnyTrail Ultra Services high-altitude training
Bad to the Bone: trail runs & training/coaching
Chad Ricklef's site: Ultramarathon Coaching
Cindy Stonesmith's site: UltraRunner Training
Danny Dreyer's site ChiRunning coach
Ian Sharman's site Sharman Ultra-Coaching
Jimmy Dean Freeman's site coaching & trail runs
Karl Meltzer's coaching & ultra blog
Lisa Smith-Batchen's site coaching, events & running camps
Matt Hart's coaching site
Paul DeWitt's site: Train Smarter, Not Harder©
Scott Jurek's site training & trail running
Scott Weber's site ultramarathon coaching
Terri Schneider coaching, clinics & sport psychology
Tim Neckar's site personal running coach
360° Moab TrailRunning Adventures running vacations
Other Links
Kevin Sayers' Site The How-To of Ultrarunning
Zombie Runner blister prevention & much more
RealEndurance: Gary Wang's site search race results
Pete Zinsli's site search race results
UltraRunning Magazine News, Races etc.
UltraFanatics: track your ultra results
Trail Runner Magazine the gospel of trail running
ULTRAmarathonRunning Trail, mountain, desert events, etc.
USA Ultrarunning 100k & 24hr teams
International ultras calendar / Multi-day ultras
Arkansas Ultra Running Assn (AURA) AT100+
AUA news and info on USA ultrarunning
Kansas City trail running
Planet Ultramarathon news on ultrarunning
SUCCEED! products (electrolytes, etc.)
Robert Tavernini's awards for ultras
Team CRUD: Pikes Peak, etc.
USA Crossers: run across America?
Sites/blogs by other ultrarunners
Miscellaneous
Books // Videos // Foreign ultras (in German)
Free advice // Running-related quotes
UltraHills (long and/or steep)
Difficulty ranking of ultras
Milestones (mega-ultrarunners in the USA)
Other Internet Resources
Subscribing to the ULTRA List // Joining the Yahoo! group
Goodies (buckles, T-shirts, etc.)
What's an Ultra Marathon? (and how can I finish one?)

"http://www.Run100s.com/" (updated: 1/23/12) StanJ@Run100s.com (over a gazillion hits since 5/15/95)