Your trail race season, organized.

Race Mission Control

Find your next trail race. Build your season. Study every climb before race day.

Built by trail runners, for trail runners.

Find a race Start building your season

Trailrace mobile app Discover screen, featuring Behind the Rocks Ultra 50K in Moab, Utah above a race search bar

Trailrace mobile app dashboard showing a registered race, Devil on the Divide 50K, with saved races, results and calendar shortcuts

Trailrace mobile app race page for the High Lonesome 100, showing its course map, 100 mile distance, 23,235 ft of climbing and lottery entry

Built for race season

Everything you need for your best season yet.

Search every trail race, anywhere.

Filter by distance, elevation, terrain, qualifier status, registration window, and location. The directory that finally has the race you're looking for.

Race search on the Trailrace mobile app, with a search-by-name field and shortcuts to explore races by location, distance or date

Build the season you've been mapping in your head.

Add races to your calendar, shortlist contenders, and see your entire year at a glance — entry deadlines, lottery dates, and travel all in view.

Trailrace race calendar for July 2026 with race days marked and the Hardrock 100 in Silverton, Colorado listed below

Chasing a dream race? See the path.

Trailrace shows you which races qualify for which lotteries — and exactly which boxes you still need to tick before the entry window opens.

Study every climb before you toe the line.

Interactive course maps with elevation profiles, aid stations, cutoffs, and crew points. Recon the course from your couch.

The global race directory

From your local 50K to Western States. All in one searchable map.

Filter by distance, elevation, terrain, route type, registration window, lottery, and country. If it's a trail race, it's probably here — and if it's not, tell us and we'll add it.

Search the directory

Trailrace race search showing trail races across Colorado on a map, with distance, elevation gain and route-type filters open

Know the course before race day.

Every climb. Every aid station. Every cutoff.

Entry requirements, course details, community reviews, recommended prep, and much more, for every race.

And the Course Explorer walks you through the route mile by mile — elevation profile, water stops, drop-bag points, crew access, and the gnarly bits other runners flagged. Show up ready.

Explore the Hardrock 100

The Hardrock 100 race page on Trailrace, showing its July 2026 date, Silverton Colorado start, 102.5 mile loop and 33,197 ft of climbing

One calendar for the whole season.

Registered, shortlisted, waitlisted — and the qualifiers you still need.

Drop races into your calendar and Trailrace handles the rest: lottery dates, entry windows, crew commitment conflicts, and which races count toward which qualifiers. Stop juggling tabs and spreadsheets.

Trailrace season planner with a 2026 calendar of seven trail races laid out month by month, from a 50 mile in May to a trail marathon in October

Your season command center

Built by trail runners who got tired of spreadsheets.

Your season in plain view: See all your races and critical dates on one timeline so you can see if your plan actually fits.
Goal tracking: Set your A, B, and C goals. Monitor your progress and stay on top of your race objectives throughout the season.
Never miss a registration deadline: Stay on top of registration deadlines so you never miss out on your favorite races.
Race-level task insight: Track race requirements like service work and qualifiers so you don't miss any important details.
Results journal: Log every finish (or DNF), splits, conditions, and notes. Your personal race history, always at hand.
Crewing and Volunteer commitments: Track the races you're crewing or volunteering at so you never double-book a race weekend.

Races the community is stoked about

What runners are watching this season

High Lonesome 100

Nathrop, CO, United StatesJuly 16 – 17, 2027

High Lonesome 100 is a loop trail race in Nathrop, CO, United States, held on July 16 – 17, 2027. The course covers 100 miles, climbs 23,240 ft, and has a 37h cutoff.

Dist100 mi

Gain23,240 ft

Limit37 h

Terrain

Western States Endurance Run

Olympic Valley, CA, United StatesJune 26, 2027

Western States Endurance Run is a point-to-point trail race in Olympic Valley, CA, United States, held on June 26, 2027. The course covers 100.2 miles, climbs 18,000 ft, and has a 30h cutoff.

Course map for Western States Endurance Run

Dist100.2 mi

Gain18,000 ft

Limit30 h

Terrain

Hardrock 100 Endurance Run

Silverton, CO, United StatesJuly 09, 2027

Hardrock 100 Endurance Run is a loop trail race in Silverton, CO, United States, held on July 09, 2027. The course covers 102.5 miles, climbs 33,200 ft, and has a 48h cutoff.

Course map for Hardrock 100 Endurance Run

Dist102.5 mi

Gain33,200 ft

Limit48 h

Terrain

Chuckanut 50K

Bellingham, WA, United StatesMarch 20, 2027

Chuckanut 50K is a lollipop trail race in Bellingham, WA, United States, held on March 20, 2027. The course covers 31.1 miles, climbs 5,970 ft, and has an 8h cutoff.

Dist31.1 mi

Gain5,970 ft

Limit8 h

Behind the Rocks Ultra 50K

Moab, UT, United StatesApril 03, 2027

Behind the Rocks Ultra 50K is a loop trail race in Moab, UT, United States, held on April 03, 2027. The course covers 32.2 miles, climbs 3,830 ft, and has a 12h cutoff.

Course map for Behind the Rocks Ultra 50K

Dist32.2 mi

Gain3,830 ft

Limit12 h

Terrain

Your season starts here.

It's free to sign up & create your season. Find your next race in 30 seconds, build your calendar in five minutes, and never miss another lottery deadline.

Explore Races

Frequently asked questions

What is Trailrace.co?

Trailrace.co is a global directory of trail races and ultramarathons, paired with a season planner. Search races by distance, elevation and location, save them to a calendar, work out which qualifiers you still need, and study a course in detail before race day.

Is Trailrace.co free to use?

Yes. Creating an account, searching the directory, saving races and building your season calendar are all free.

How do I find a trail race near me?

Search the directory by location and radius, then filter by distance, vertical gain, steepness, route type and month. You can also filter on registration status, lottery entry, qualifier requirements, and whether crew, pacers or drop bags are allowed. Results show on a map or as a list.

Which trail races have a lottery, and what are my odds?

Many of the biggest 100-milers fill by lottery because demand far outruns the number of places. Trailrace.co flags every race that uses one and shows its draw date and registration window. The Lottery Odds Calculator covers Western States, Hardrock, High Lonesome and UTMB, and gives you your chance of selection this year plus an estimated years-to-entry.

What is a race qualifier?

Some races only accept entrants who have already finished an approved qualifying race. Trailrace.co lists each race's qualifier rules, its qualifying window and its submission deadline, and helps you find a race that will qualify you.

Can I see a race course before race day?

Yes. The Course Explorer walks the route mile by mile on a map, with its elevation profile, aid stations, cutoff times, drop-bag points and crew access. It is free and you do not need an account.

Trail race terms, defined

See all terms

Ultramarathon

Any race longer than the marathon distance of 42.2 km (about 26 miles).

Elevation gain

The total amount of climbing on a course, added up over every uphill section rather than measured from the lowest point to the highest.

Cutoff

The latest time you are allowed to leave a given point on the course and stay in the race.

Qualifier

A race you must already have finished before you are allowed to enter another one.

Lottery

A random draw used to hand out entries when far more runners apply than a race can take.

Drop bag

A bag you pack in advance that the race transports to a named aid station, so your spare socks, headlamp batteries and food are waiting for you there.