Matches in DBpedia 2014 for { ?s <http://dbpedia.org/property/difficulty> ?o. }
- Jones_Falls_Trail difficulty "Easy".
- Jordan_River_Parkway difficulty "Easy".
- Kalamazoo_River_Valley_Trail difficulty "Easy".
- Kanheri_Caves difficulty "easy".
- Karla_Caves difficulty "easy".
- Katy_Trail_State_Park difficulty "Easy".
- Kazumura_Cave difficulty "Easy to Difficult".
- Ken_Patrick_Trail difficulty "Moderately easy".
- Kepler_Track difficulty "medium".
- Kerry_Way difficulty "Strenuous".
- Kharosa difficulty "easy".
- Knobstone_Trail difficulty "Moderate to Strenuous".
- Kokoda_Track difficulty "Hard".
- Koonung_Creek_Trail difficulty "Easy".
- Kororoit_Creek_Trail difficulty "Easy".
- Kungsleden difficulty "Moderate".
- La_Cloche_Silhouette_Trail difficulty "High".
- Lake_Solitude_Trail difficulty "Strenuous".
- Lansing_River_Trail difficulty "Easy".
- Larapinta_Trail difficulty "Medium".
- Laurel_Falls_Trail difficulty "Easy ; Moderate".
- Lava_Falls_Trail difficulty "Strenuous".
- Laverton_Creek_Trail difficulty "Easy".
- Lawrence_Hopewell_Trail difficulty "Easy".
- LeTort_Spring_Run_Nature_Trail difficulty "Easy, level, ADA accessible".
- Lebanon_Mountain_Trail difficulty "Easy to moderate".
- Leeds_Country_Way difficulty "Easy: some short hills and can be muddy in places".
- Leigh_Lake_Trail difficulty "Easy".
- Lenape_Trail difficulty "Moderate".
- Liberty_Bell_Trail difficulty "Easy".
- Lillinonah_Trail difficulty "easy, with very few difficult sections".
- Limestone_Link difficulty "Moderate to Strenuous".
- Limey_Way difficulty "Moderate to Strenuous".
- Linear_Park_Arts_Discovery_Trail difficulty "Easy".
- Little_Blue_Lake difficulty "Above water - no stated difficulty".
- Little_Blue_Lake difficulty "Underwater - CDAA Deep Cavern grade".
- Little_Miami_Scenic_Trail difficulty "Easy".
- Lochside_Regional_Trail difficulty "Accessible to Easy".
- Long_Path difficulty "Moderate to Strenuous".
- Long_Trail difficulty "Moderate to Strenuous".
- Lost_River_Caverns difficulty "easy".
- Lough_Derg_Way difficulty "Moderate".
- Lovelock_Cave difficulty "Easy".
- Lower_Mount_Cammerer_Trail difficulty "Strenuous".
- Lower_Trail_(Pennsylvania) difficulty "Easy, ADA accessible".
- Loyalsock_Trail difficulty "Moderate".
- MKT_Trail difficulty "Easy".
- Ma_and_Pa_Trail difficulty "Easy".
- Macmillan_Way difficulty "Easy".
- Maddron_Bald_Trail difficulty "Strenuous".
- Mahakali_Caves difficulty "easy".
- Main-Radweg difficulty "Easy to Moderate".
- Main_Yarra_Trail difficulty "Easy to medium".
- Mammoth_Cave_(Utah) difficulty "Moderate".
- Mandapeshwar_Caves difficulty "easy".
- Manitou_Incline difficulty "Extreme".
- Maribyrnong_River difficulty "Easy".
- Maribyrnong_River_Trail difficulty "Mostly easy".
- Maricopa_Trail difficulty "Easy".
- Maroondah_Aqueduct_Trail difficulty "Travel anti-clockwise then easy".
- Massanutten_Trail difficulty "Strenuous".
- Mattabesett_Trail difficulty "Easy to difficult with a few dangerous ridge walk sections".
- Maximiliansweg difficulty "medium".
- Medway_Valley_Walk difficulty "Easy".
- Meigs_Mountain_Trail difficulty "Moderate".
- Mendip_Way difficulty "Moderate. Includes some steep climbs.".
- Merri_Creek_Trail difficulty "Easy".
- Metacomet-Monadnock_Trail difficulty "easy, with difficult sections".
- Metacomet_Trail difficulty "easy, with difficult sections".
- Michigan_Shore-to-Shore_Trail difficulty "Varies from location to location".
- Mid_Clare_Way difficulty "Moderate".
- Mid_State_Trail_(Pennsylvania) difficulty "Moderate to Strenuous".
- Middle_Fork_Cut_Off_Trail difficulty "Easy".
- Middlesex_Greenway difficulty "Easy".
- Midstate_Trail_(Massachusetts) difficulty "easy, with moderately difficult sections".
- Milford_Track difficulty "Medium".
- Mineral_Ridge_National_Recreation_Trail,_Idaho difficulty "Trail grade is an average of 8%, with a 15% maximum".
- Miners_Way_and_Historical_Trail difficulty "Stenuous".
- Minster_Way difficulty "Challenging".
- Missisquoi_Valley_Rail_Trail difficulty "Easy".
- Monadnock-Sunapee_Greenway difficulty "moderately difficult".
- Monaghan_Way difficulty "Moderate".
- Monroe_Township_Bikepath difficulty "Easy".
- Montour_Trail difficulty "Easy".
- Moonee_Ponds_Creek_Trail difficulty "Easy".
- Mossdale_Caverns difficulty "Grade 5".
- Mount_McConnel_National_Recreation_Trail difficulty "Moderate".
- Mount_Whitney_Trail difficulty "Strenuous".
- Mountains-to-Sea_Trail difficulty "Moderate to Strenuous".
- Mullum_Mullum_Creek_Trail difficulty "Easy".
- Murray_to_the_Mountains_Rail_Trail difficulty "Easy to medium".
- Nankoweap_Trail difficulty "Expert".
- Naugatuck_Trail difficulty "easy, with very few difficult sections".
- Neffs_Cave_(Utah) difficulty "Hard".
- Neuse_River_Trail difficulty "Easy".
- Neusiok_Trail difficulty "Easy".
- New_England_National_Scenic_Trail difficulty "Moderate to strenuous".
- New_England_Traverse difficulty "Moderate to strenuous".
- Nipissing-North_Arm_Orienteering_Trail difficulty "very difficult".
- Noon's_Hole difficulty "High".