33
Races tracked
0
Open now
1
This month
Wrightwood to Pasadena, CA · 100 mi
Requires a qualifying 50-mile+ finish plus trail-work hours; organizer describes a random drawing (~210 spots against a larger applicant pool), typically held in early October
Estimated — verify before relying on it
Wartburg, TN · 31 mi
October 31, 2026
Estimated — verify before relying on it
Mount St. Helens, WA · 200 mi
August 10, 2026
Estimated — verify before relying on it
Courmayeur, Italy to Chamonix, France · 63 mi
Entry is via the 'Running Stones' lottery: pre-registration typically runs early-to-mid January, draw shortly after; more Stones (earned from finishing qualifying races) means more chances in the draw
Estimated — verify before relying on it
Easton, WA · 100 mi
Requires a qualifying finish plus 8 hours of trail work (or a buyout); weighted lottery window typically mid-December through mid-January
Estimated — verify before relying on it
Black Canyon City to Flagstaff, AZ · 250 mi
May 1, 2026
Confirmed date
Wilsall to Lennep, MT · 100 mi
Starting with the 2027 race, entry moves to a weighted-ticket lottery (extra tickets for repeat volunteers, veteran finishers, and Native Crow community entries) after demand outgrew open registration; exact 2027 application/draw dates not yet announced
Estimated — verify before relying on it
Réunion Island, France · 103 mi
Bailiff-supervised random draw for the general non-resident pool when demand exceeds available spots; separate quota tracks exist for Réunion residents, mainland France, and foreign applicants
Estimated — verify before relying on it
Oahu, HI · 100 mi
July 15, 2026
Estimated — verify before relying on it
Silverton, CO · 100.5 mi
December 5, 2026
Estimated — verify before relying on it
Westminster, MD · 31 mi
January 1, 2027
Estimated — verify before relying on it
Mount Princeton (Buena Vista/Nathrop), CO · 100 mi
Requires a qualifying finish; applications open for roughly one week in late December/early January, with a live, randomized (dice-seeded) drawing streamed publicly in mid-January, tickets weighted by past unsuccessful applications, finish history, and trail-work hours
Estimated — verify before relying on it
Sai Kung / New Territories, Hong Kong · 62 mi
August 23, 2026
Confirmed date
La Grange, WI · 100 mi
December 1, 2026
Estimated — verify before relying on it
Leadville, CO · 99.7 mi
December 1, 2026
Estimated — verify before relying on it
Chamonix, France · 56 mi
50% of bibs are allocated by genuine random draw (tirage au sort) among all registrants; the other 50% go first-come-first-served to Chamonix Valley residents (10%) and entrants committing to arrive by train/bus (40%). Draw registration typically runs late October, with results 2-3 weeks later
Estimated — verify before relying on it
Moab, UT · 240 mi
January 5, 2027
Estimated — verify before relying on it
Lake District, Cumbria, UK · 105 mi
September 1, 2026
Confirmed date
Fuji Five Lakes, Yamanashi/Shizuoka, Japan · 100 mi
General entry runs roughly Nov 1-16; if entries exceed the quota for a distance, a lottery is held and results are announced weeks later
Estimated — verify before relying on it
Orsieres, Switzerland to Chamonix, France · 35 mi
Same Running Stones lottery mechanism as CCC/UTMB: pre-registration typically early-to-mid January, draw shortly after
Estimated — verify before relying on it
Lake City, CO · 50 mi
A two-week lottery registration window opens mid-January; entrants not drawn are placed on a waitlist and only charged if later accepted
Estimated — verify before relying on it
Athens to Sparta, Greece · 153 mi
Requires a recent ultra-distance performance standard; remaining applicants enter an automated random.org electronic lottery for the roughly 400 total spots
Estimated — verify before relying on it
Lutsen, MN · 100 mi
Genuine random-draw lottery with no qualifier requirement found; 2026 cycle ran January 1-15, 2026
Estimated — verify before relying on it
Lutsen, MN · 50 mi
January 1, 2027
Estimated — verify before relying on it
Lutsen, MN · 31 mi
January 1, 2027
Confirmed date
Lake Tahoe, CA/NV · 205 mi
Genuine random drawing (cards aren't charged unless selected); non-selected entrants go to a first-come waitlist. No qualifier requirement was found
Estimated — verify before relying on it
Logan, UT · 100 mi
Requires a qualifying finish plus volunteer/trail-work hours; weighted-ticket lottery. 2027 registration window and draw date are officially listed as TBD
Estimated — verify before relying on it
Aosta Valley, Courmayeur, Italy · 205 mi
Random.org draw (subject to per-country quotas) for the general pre-registrant pool; a separate direct-entry path exists for finishers of designated partner-circuit races but isn't required to enter the draw
Estimated — verify before relying on it
Chamonix, France · 106 mi
January 21, 2027
Estimated — verify before relying on it
Oakridge, OR · 62 mi
Pure lottery draw after automatic-entry carve-outs for past winners and veteran finishers; 2026 cycle ran January 1-21 with the draw January 22
Estimated — verify before relying on it
Salt Lake City to Midway, UT · 100 mi
December 1, 2026
Estimated — verify before relying on it
Olympic Valley to Auburn, CA · 100.2 mi
November 1, 2026
Confirmed date
Big Piney, WY · 100 mi
Applications open for about ten days in early February via UltraSignup; a random-number-based drawing (each ticket assigned a random number, ordered by distance from a randomly generated reference number) is held about a week later, capped at 100 runners due to Forest Service permit limits
Estimated — verify before relying on it