One finish line, many possible formats
Fixed-Distance Multiday Races
A broad family of continuous races where the finish line is fixed but the distance, duration, terrain, and support model vary widely.
Cover photo: Daoud Abismail / Unsplash
How the Format Works
Fixed-distance multiday races ask runners to complete a defined route within a cutoff. The category can include road classics, mountain crossings, and exceptionally long loop races, so the label alone says little about technical difficulty or support.
Start with the actual event rather than a generic distance plan. Course profile, surface, climate, cutoff structure, aid spacing, sleep opportunities, navigation, crew access, qualification, and withdrawal transport define the challenge.
Checked figures
Three races inside one label
Fixed-distance only means the finish line is defined. These three events in the directory show why a single pacing plan cannot cover the category.
| Measure | Figure |
|---|---|
| Spartathlon 2026 | 245 km from Athens to Sparta, 36-hour limit, every checkpoint also a cutoff. Tamás Bódis won in 19:40:51. |
| Badwater 135, 2026 | 135 miles from Badwater Basin to Whitney Portal, with a 45-hour limit. The older 48-hour limit is not the 2026 rule. |
| Self-Transcendence 3100 | 3,100 miles on a Queens loop, up to 52 days. A finisher needs about 59.6 miles / 95.9 km a day. |
The 2026 Spartathlon road book places the finish at 244.74 km; the organizer's announcements say 245 km. Compare duration, cutoffs, aid, and support for the specific event, not the shared label.
Sources: Spartathlon 2026 results; Badwater 135 event page; Self-Transcendence 3100 event page.
Curated preparation path
Learn, Train, and Plan
1. Define the Actual Format
Look beyond distance and compare clock, terrain, support, qualification, and withdrawal rules.
Types of Multiday Events
Compare fixed-distance, fixed-time, stage, backyard, and continuous formats.
GuideChoose Your First Multiday Race
Use practical event questions instead of assuming one distance is best.
AnswerBest First Ultramarathon Distance
Why terrain, support, cutoffs, and experience matter alongside distance.
2. Plan Movement and Rest
Create course-specific options for walking, sleep, pacing, and safe adaptation.
Walking Strategy for Ultramarathons
Use deliberate walking for terrain, energy management, and sustainable progress.
GuideSleep Strategy for Multiday Races
Prepare multiple rest options and clear alertness-based safety rules.
ToolMultiday Pace Calculator
Explore finish scenarios with moving time, breaks, and sleep included.
3. Build Support and Fueling
Match the plan to aid access, crew rules, available food, and route conditions.
4. Prepare for Changing Conditions
Protect feet, lighting, and equipment across a route that may span days.
Ultra Cutoff Planner
See how much margin each intermediate gate leaves when conditions slow you down.
Gear guideHeadlamp and Battery Strategy
Plan lighting around terrain, night duration, charging, and backups.
ToolInteractive Gear Checklist
Build a list, then reconcile it with the current mandatory-kit rules.
Curated race directory
Active and Upcoming Fixed-Distance Events
29 matching events as of Oct 20, 2026; event source reviews dated August 10, 2026 – October 15, 2026. 35 past editions remain in the directory archive.
Cactus Rose 100 Mile
Hill Country State Natural Area, Bandera, Texas, USA
Four 25-mile loops of rocky Hill Country trail near Bandera, alternating direction each lap, with unstaffed aid stations that supply only water and ice and a 44-hour limit.
View verified race details →No Business 100
Pickett CCC Memorial State Park, Jamestown, Tennessee, USA
A single 100.2-mile loop from Pickett CCC Memorial State Park through the Big South Fork into Kentucky and back, run counterclockwise in 2026, with about 14,500 ft of climbing and a 34-hour limit.
View verified race details →Rim to River 100
New River Gorge, West Virginia, USA
A 100-mile out-and-back through New River Gorge with repeated rim-to-river traverses, 12,000 ft of climbing, and a 32-hour cutoff.
View verified race details →Kullamannen Ultra 100 Miles
Höganäs to Båstad, Sweden
A 173 km coastal point-to-point through southern Sweden with technical nature-reserve trails, long darkness, and a 32-hour cutoff.
View verified race details →Javelina Jundred — 100 Mile
McDowell Mountain Regional Park, Arizona, USA
A social desert-trail 100 using five rolling loops in McDowell Mountain Regional Park, with an estimated 6,296 ft of gain and a 30-hour cutoff.
View verified race details →Ozark Trail 100 Mile Endurance Run
Mark Twain National Forest to Steelville, Missouri, USA
A 100.9-mile point-to-point race through Missouri's Mark Twain National Forest, using mostly Ozark Trail singletrack with a 32-hour cutoff.
View verified race details →Ultra X Madeira
Madeira, Portugal
A mountainous two-stage race across Madeira, with a 110 km continuous option and shorter single-day races on the same weekend.
View verified race details →Pinhoti 100
Pine Glen Campground to Sylacauga, Alabama, USA
A point-to-point Alabama 100-miler through Talladega National Forest and the Pinhoti Trail, ending near Sylacauga with a 32-hour cutoff.
View verified race details →Rio Del Lago 100 Mile Endurance Run
Beal's Point, Granite Bay, California, USA
A varied Northern California 100-miler combining Folsom-area loops with an out-and-back trail journey into the Sierra foothills and a 30-hour cutoff.
View verified race details →Tunnel Hill 100
Vienna, Illinois, USA
A flat, fast 100-mile rail-trail race on crushed limestone with a maximum grade of about 2% and a record-focused reputation.
View verified race details →Coast to Kosci
Twofold Bay to Charlotte Pass, New South Wales, Australia
An invitational 240 km journey from the Tasman Sea to Australia's highest mountain, finishing at Charlotte Pass after summiting Kosciuszko.
View verified race details →Extremo Sul Ultramarathon
Chuí to Cassino, Rio Grande do Sul, Brazil
A non-stop 226 km crossing of Brazil's immense southern beach from Chuí to Cassino, with only 130 m of climb but a 52-hour limit.
View verified race details →Fat Ox Endurance Runs
Goodyear, Arizona, USA
A fixed-time festival on a certified 0.988178-mile concrete loop, headlined by the 48-hour race and 2026 USATF 24-Hour Championships.
View verified race details →Dinosaur Valley Endurance Run — 100 Mile
Dinosaur Valley State Park, Glen Rose, Texas, USA
A looped Texas trail 100 in Dinosaur Valley State Park with roughly 9,000 ft of climbing and mandatory progressive cutoffs across the repeated-loop course.
View verified race details →KosciMiler
Snowy Mountains, New South Wales, Australia
A 160.5 km point-to-point through Australia’s Snowy Mountains with 4,731 m of climbing, a Mount Kosciuszko summit, and a 36-hour cutoff.
View verified race details →Brazos Bend 100
Brazos Bend State Park near Needville, Texas, USA
A flat, repeated-loop 100-miler in Brazos Bend State Park, built around runnable park trails and a 32-hour cutoff.
View verified race details →The Hitchcock Experience — 100 Mile
Hitchcock Nature Center, Honey Creek, Iowa, USA
A five-loop Iowa trail 100 at Hitchcock Nature Center, with steep repeated hills, roughly 4,928 ft of elevation change per loop, and a 34-hour cutoff.
View verified race details →Daytona 100
Jacksonville Beach to Ponce Inlet, Florida, USA
A mostly point-to-point coastal-road 100-miler with a 7-mile opening out-and-back, a Ponce Inlet finish, and a 31-hour net-time limit.
View verified race details →Desert Solstice Track Invitational
Phoenix, Arizona, USA
An elite invitation-only 24-hour and 100-mile track race at Camelback High School. Limited to 25 runners with qualifying standards. Organized by Aravaipa Running.
View verified race details →Across the Years
Peoria, Arizona, USA
A legendary multi-day running festival spanning New Year's Eve. Offers 6-hour to 6-day fixed-time races plus fixed-distance options. Organized by Aravaipa Running.
View verified race details →Coldwater Hundred — 100 Mile
Estrella Mountain Regional Park, Goodyear, Arizona, USA
A 101.3-mile desert loop race at Estrella Mountain Regional Park, combining two shorter red loops and three longer blue loops with a 32-hour cutoff.
View verified race details →Arc of Attrition 100M
Coverack to Perranporth Airfield, Cornwall, United Kingdom
A winter coastal ultra along Cornwall’s South West Coast Path, from Coverack to Perranporth Airfield, with 173 km, 5,507 m of climbing and a 37-hour limit.
View verified race details →Hong Kong 100
Hong Kong
A 100 km mountain-trail race through Hong Kong's beaches, country parks, steep ridgelines, and extensive trail network.
View verified race details →Tarawera Ultra-Trail TMiler
Rotorua, New Zealand
Tarawera's longest race starts at Te Puia in Rotorua, taking runners through the region's forests and lake country over 163 km.
View verified race details →Jackpot Ultras
Cornerstone Park, Henderson, Nevada, USA
Aravaipa’s timed-race festival at Cornerstone Park offers 48-hour and 24-hour races alongside shorter timed events and fixed distances.
View verified race details →Bradshaw Brute 100
Black Canyon City to Prescott, Arizona, USA
A distinct 99.9-mile point-to-point race within Cocodona race week, climbing from Black Canyon City through Crown King to Prescott with a 38-hour cutoff.
View verified race details →Western States 100
Olympic Valley to Auburn, California, USA
A 100.2-mile point-to-point race from Olympic Valley through the Sierra Nevada and foothill canyons to Auburn, with qualification and lottery entry.
View verified race details →Hardrock 100
Silverton, Colorado, USA
A high-altitude loop through Colorado's San Juan Mountains from Silverton, with the 2027 edition running counterclockwise and allowing 48 hours to finish.
View verified race details →Cascade Crest 100
Easton, Washington, USA
A clockwise 100-mile mountain loop from Easton with more than 23,000 ft of climbing, long Pacific Crest Trail sections, and a 34-hour cutoff.
View verified race details →Dates, entry status, routes, and rules can change. Use each event page's official organizer links before registration or travel. Format preparation paths were reviewed October 2, 2026.
Fixed-Distance FAQs
What makes a fixed-distance race a multiday event?
The course or cutoff extends the effort through multiple day-night cycles for at least part of the field. There is no single distance threshold that makes every race operationally alike.
Are fixed-distance races easier to pace than timed races?
Not inherently. A known finish distance helps with route planning, but terrain, weather, cutoffs, aid gaps, sleep loss, and navigation may make pace highly variable.
How should fixed-distance events be compared?
Compare expected duration, terrain, elevation, climate, cutoff gates, aid spacing, crew and pacer rules, sleep options, mandatory gear, qualification, medical support, and withdrawal transport—not distance alone.
Compare Related Formats
200+ Mile Races
A continuous fixed-distance ultramarathon where route, terrain, sleep, aid access, and a multi-day cutoff shape the race.
100-Mile Ultramarathons
A fixed-distance ultramarathon where terrain, cutoff structure, night running, aid access, and crew rules can matter as much as the 100-mile label.
Stage Races
A multiday event split into daily stages, with defined starts and finishes plus an overnight camp, hotel, or support base.