Lonely/Tired/Lost

Races
Trail

Trail ultra marathons

Filters

Road Trail Track

Stage Relay Backyard

50K 50mi 100K 100mi 6hr 12hr 24hr

Beginner Intermediate Hard Hardest

North America South America Europe Asia Africa Oceania Antarctica

Afghanistan Åland Islands Albania Algeria Andorra Angola Anguilla Antarctica Antigua and Barbuda Argentina Armenia Aruba Australia Austria Azerbaijan Bahamas Bahrain Bangladesh Barbados Belarus Belgium Belize Benin Bermuda Bhutan Bolivia Bosnia and Herzegovina Botswana Brazil British Virgin Islands Brunei Bulgaria Burkina Faso Burundi Cambodia Cameroon Canada Cape Verde Cayman Islands Central African Republic Chad Chile China Colombia Comoros Congo Costa Rica Croatia Cuba Curaçao Cyprus Czech Republic Democratic Republic of the Congo Denmark Djibouti Dominica Dominican Republic Ecuador Egypt El Salvador Equatorial Guinea Eritrea Estonia Eswatini Ethiopia Faroe Islands Fiji Finland France French Guiana Gabon Gambia Georgia Germany Ghana Gibraltar Greece Grenada Guadeloupe Guam Guatemala Guernsey Guinea Guinea-Bissau Guyana Haiti Honduras Hong Kong Hungary Iceland India Indonesia Iran Iraq Ireland Isle of Man Israel Italy Ivory Coast Jamaica Japan Jersey Jordan Kazakhstan Kenya Kiribati Kuwait Kyrgyzstan Laos Latvia Lebanon Lesotho Liberia Libya Liechtenstein Lithuania Luxembourg Macau Madagascar Malawi Malaysia Maldives Mali Malta Marshall Islands Martinique Mauritania Mauritius Mayotte Mexico Moldova Monaco Mongolia Montenegro Montserrat Morocco Mozambique Myanmar Namibia Nauru Nepal Netherlands New Caledonia New Zealand Nicaragua Niger Nigeria Norfolk Island Northern Mariana Islands North Korea North Macedonia Norway Oman Pakistan Palau Panama Papua New Guinea Paraguay Peru Philippines Poland Portugal Puerto Rico Qatar Réunion Romania Russia Rwanda Saint Kitts and Nevis Saint Lucia Saint Martin Saint Pierre and Miquelon Saint Vincent and the Grenadines Samoa San Marino São Tomé and Príncipe Saudi Arabia Senegal Serbia Seychelles Sierra Leone Singapore Sint Maarten Slovakia Slovenia Solomon Islands Somalia South Africa South Korea South Sudan Spain Sri Lanka Sudan Suriname Svalbard and Jan Mayen Sweden Switzerland Syria Taiwan Tajikistan Tanzania Thailand Timor-Leste Togo Tonga Trinidad and Tobago Tunisia Turkey Turkmenistan Turks and Caicos Islands Tuvalu Uganda Ukraine United Arab Emirates United Kingdom United States Uruguay US Virgin Islands Uzbekistan Vanuatu Venezuela Vietnam Western Sahara Yemen Zambia Zimbabwe

Winter Spring Summer Fall

January February March April May June July August September October November December

1 races

Ultra Trail Oso Negro

Ultra Trail Oso Negro

Jan 24, 2026 (Sat)

Santiago, Nuevo León, Mexico

1.5 - 2.2

1

Showing 1 - 1 of 1 events

Races by distance

50K races
50mi races
100K races
100mi races
6hr races
12hr races
24hr races

Races by type

Road races
Trail races
Track races
Stage races
Relays
Backyard ultras

Races by continent

North America
South America
Europe
Asia
Africa
Oceania

Races by country

United States
United Kingdom
France
Germany
Canada
Australia
Japan
South Africa

Races by season

Spring 2025
Summer 2025
Fall 2025
Winter 2025

Lonely/Tired/Lost

Where the blisters are real - and so are the hallucinations.

Privacy Policy
Cookies Policy
Terms of Use