This calendar lists Half Marathon to Full Marathon races organized in North America during the month of May bearing the tag Trail.
You can click on the buttons below to filter down the selection of race to a specific location, time frame or type of race.
At any time, you can get back to the worldwide calendar.
Sort by Upcoming races first Name A->Z Name Z->A Location A->Z Location Z->A Date older->newer Date newer-> older
Blackfoot Ultra
May 25, 2013
North America | Canada | Alberta
Edmonton
Half Marathon to Full Marathon : 25 km
Walk Trail
Q50 Costa Rica Ultramarathon
North America | Costa Rica
Sarapiqui
Half Marathon to Full Marathon : 40 km
Trail
Sulphur Springs Trail Run
North America | Canada | Ontario
Ancaster
Pineland Farms Trail Running Festival
May 26, 2013
North America | USA | New England | Maine
New Gloucester
Trail Hilly
Greenland Trail 50k
May 03, 2014
North America | USA | Mountain Region | Colorado
Greenland
Born to Run Trail Run
May 26, 2012
North America | USA | Pacific | Washington
Sammamish
Trail Barefoot
Collegiate Peaks Trail Run
May 04, 2013
Buena Vista
Half Marathon to Full Marathon : 25 mi
Little Mountain 10k/25k
May 05, 2013
Mt. Vernon
The North Face Dirty Feet Kal Park 50
May 05, 2013 Inaugural race
North America | Canada | British Columbia
Vernon
Mountain Trail
Don't Fence Me in Trail Run
May 11, 2013
North America | USA | Mountain Region | Montana
Helena
Half Marathon to Full Marathon : 30 km
Island Runner Elk/Beaver Ultras
Victoria
Walk Trail Flat
Long Island Greenbelt Trail 50k
North America | USA | Mid-Atlantic | New York
Plainview
Seaton Trail 50 mile, 52 km & 29 km Trail Race
May 11, 2013 Cancelled
Pickering
Half Marathon to Full Marathon : 29 km
Wapack and Back Trail Races
North America | USA | New England | Massachusetts
Ashburnham
Half Marathon to Full Marathon : 21.5 mi
Whoos in El Moro
North America | USA | Pacific | California
Newport Beach
Hilly Trail
