Win your entry for the 100km run Biel in Switzeland

2015 - 2016 North America Trail Half Marathon to Full Marathon Calendar in May

Browse our Calendar for races longer than a half marathon but shorter than a full marathon organized in North America during the month of May bearing the tag Trail among 38 races.

38 races

Amasa 14.5 Miler

  • North America | USA | Utah | Moab
  • Half Marathon to Full Marathon - 14.5 miles
  • May 02, 2015
  • Trail Grass Roots Events

Armstrong Redwoods 30K

  • North America | USA | California | Guerneville
  • Half Marathon to Full Marathon - 30 kilometers
  • May 02, 2015 - 08:40
  • Hilly Trail

Collegiate Peaks 25M Trail Run

  • North America | USA | Mountain Region | Colorado | Buena Vista
  • Half Marathon to Full Marathon - 25 miles
  • May 02, 2015
  • Trail

Greenland Trail 25k

  • North America | USA | Mountain Region | Colorado | Greenland
  • Half Marathon to Full Marathon - 25 kilometers
  • May 02, 2015 - 08:00
  • Trail

Sinister Night 27K Trail Run

  • North America | USA | Mountain Region | Arizona | San Tan Mountain Regional Park, Queen Creek, AZ
  • Half Marathon to Full Marathon - 27 kilometers
  • May 02, 2015 - 19:30
  • Night Trail Aravaipa Running

Tchimbé du Piton

  • North America | Martinique | Camp de Balata
  • Half Marathon to Full Marathon - 30 kilometers
  • May 02, 2015 - 09:00
  • Trail Mountain

Joe English Trail Challenge

  • North America | USA | New Hampshire | Amherst
  • Half Marathon to Full Marathon - 25 kilometers
  • May 03, 2015
  • Charity Trail

Ride the Wind 25M

  • North America | USA | Nevada | Las Vegas
  • Half Marathon to Full Marathon - 25 miles
  • May 03, 2015
  • Trail Elemental Running and Training

The North Face Dirty Feet Kal Park 50 - 25K

  • North America | Canada | British Columbia | Vernon
  • Half Marathon to Full Marathon - 25 kilometers
  • May 03, 2015 - 07:00
  • Trail North Face Dirty Feet Trail Series Mountain

Cinderella Trail Run 30 km (May)

  • North America | USA | Pacific | California | Joaquin Miller Park, Oakland
  • Half Marathon to Full Marathon - 30 kilometers
  • May 09, 2015 - 08:00
  • Trail Coastal Trail Runs

Don't Fence Me in 30K Trail Run

  • North America | USA | Mountain Region | Montana | Helena
  • Half Marathon to Full Marathon - 30 kilometers
  • May 09, 2015 - 07:30
  • Trail La Sportiva Mountain Cup

Glacier Ridge Trail Ultramarathon - 30K

  • North America | USA | Pennsylvania | Moraine State Park
  • Half Marathon to Full Marathon - 30 kilometers
  • May 09, 2015 - 08:30
  • Hilly Trail

Island Runner Elk/Beaver Ultras- 25 Mile Walk

  • North America | Canada | British Columbia | Victoria
  • Half Marathon to Full Marathon - 25 miles
  • May 09, 2015 - 06:00
  • Walk Flat Trail

Long Island Greenbelt Trail 25k

  • North America | USA | Mid-Atlantic | New York | Plainview
  • Half Marathon to Full Marathon - 25 kilometers
  • May 09, 2015 - 08:30
  • Trail

Lost Lake 25K

  • North America | USA | Pacific | Washington | Bellingham
  • Half Marathon to Full Marathon - 25 kilometers
  • May 09, 2015 - 08:00
  • Trail Mountain