Routes
- Black Mamba - mtb, network lcn, operator Finale Outdoor Region, 2 km, ascent 11 m, descent 361 m
- Black Mamba 24 - mtb allmountain
- Black Panther trail - mtb, 0.5 km, ascent 0 m, descent 50 m
- Black Pond Trail - mtb, network lcn, 0.5 km, ascent 28 m, descent 35 m
- Black Raven - mtb allmountain, operator Trailcenter Rabenberg, 25.6 km, ascent 797 m, descent 789 m
- Black Rock - mtb downhill, 2 km, ascent 88 m, descent 216 m
- Black Route - mtb
- Black Shore - mtb downhill, 0.4 km, ascent 0 m, descent 74 m
- Black Track - mtb downhill, 0.9 km, ascent 1 m, descent 57 m
- Black Track – Experten - mtb downhill, operator DIMB e.V., 1.3 km, ascent 4 m, descent 105 m
- Black Trail - mtb, network lcn, 0.7 km, ascent 0 m, descent 12 m
- Black Widow - mtb, network lcn, 1.1 km, ascent 0 m, descent 196 m
- Black&White - mtb enduro, network lcn, operator Finale Outdoor Region, 1.3 km, ascent 16 m, descent 112 m
- Blackberry Climb - mtb crosscountry, 0.6 km, ascent 43 m, descent 4 m
- Blackberry Trail - mtb
- Blackbird - mtb, network lcn, operator US:AR:Bentonville, 0.8 km, ascent 15 m, descent 69 m
- Blackjack - mtb allmountain, 1.6 km, ascent 0 m, descent 152 m
- Blacksnake Gully - mtb, 0.4 km, ascent 44 m, descent 40 m
- Blackwater Valley Multi-User Path - mtb crosscountry
- Blackwood Range Trail - mtb crosscountry
- Blacky Trail - mtb, network lcn, 0.1 km, ascent 0 m, descent 37 m
- Blade - mtb, 22.5 km, ascent 512 m, descent 510 m
- Blainon Forest - mtb, 1.3 km, ascent 0 m, descent 223 m
- Blainon Land - mtb, 2.6 km, ascent 4 m, descent 185 m
- Blairwitch Trail - mtb, operator lake.bike, 0.5 km, ascent 0 m, descent 87 m
- Blak Garden - mtb, 0.4 km, ascent 0 m, descent 80 m
- Blåkryss cykelled - mtb crosscountry
- Blanchemer - mtb crosscountry, network lcn, 10.8 km, ascent 319 m, descent 574 m
- Blanchon - mtb downhill, 6.1 km, ascent 40 m, descent 600 m
- Blaser Hütte - mtb crosscountry, operator Tirol, 8.1 km, ascent 0 m, descent 870 m
- Blassenstein - Strecke - mtb
- Blåt Spor Kårup Skov - mtb crosscountry, network lcn, 6.2 km, ascent 103 m, descent 103 m
- Blaufeld - mtb crosscountry, operator Tirol
- Blauwe route Halle - mtb, network lcn, operator Bloso
- Blaženka - mtb, network lcn, operator Kokořínské stezky z.s., 3 km, ascent 148 m, descent 117 m
- Blazing Saddles - mtb crosscountry, 1.9 km, ascent 74 m, descent 96 m
- Blazon' Saddles - mtb, 1 km, ascent 31 m, descent 83 m
- Bledlow Circular Ride - mtb, 14.2 km, ascent 267 m, descent 266 m
- Bleiki uphill - mtb, 4.3 km, ascent 441 m, descent 14 m
- Bleskovy Rodrigez - mtb, 1.1 km, ascent 1 m, descent 119 m
- Blessingbourne Estate - mtb allmountain
- Bleu - mtb downhill, operator Bike Park du Pic du Jer, 3.6 km, ascent 6 m, descent 440 m
- Bleu Noël Cerneux - mtb, network lcn, 17.9 km, ascent 316 m, descent 314 m
- Bleue des Brochaux - mtb downhill, 2.8 km, ascent 17 m, descent 352 m
- Blindseetrail - mtb, network lcn, operator Land Tirol, 8.2 km, ascent 106 m, descent 709 m
- Blizzard - mtb downhill, 0.3 km, ascent 12 m, descent 0 m
- Blokhus Klitplantage MTB - mtb singletrack, network lcn, 9.6 km, ascent 45 m, descent 45 m
- Blonde Jeans - mtb, 2.5 km, ascent 26 m, descent 54 m
- Blood Rock - mtb, 0.3 km, ascent 30 m, descent 22 m
- Bloody Bush MTB Trail (Red) - mtb
- Bloody Rocky - mtb downhill, 0.5 km, ascent 0 m, descent 135 m
- Bloody Roots - mtb downhill, 1 km, ascent 0 m, descent 235 m
- Bloomer Park Mountain Bike Trail - mtb
- Bloso Haarlebeek blauw - mtb crosscountry, network lcn
- Bloso Haarlebeek groen - mtb crosscountry, network lcn
- Bloso Haarlebeek rood - mtb crosscountry, network lcn, 12.1 km, ascent 58 m, descent 56 m
- Bloso MTB Herentals blauw - mtb crosscountry, network lcn
- Bloso MTB Herentals groen - mtb crosscountry, network lcn, 11.4 km, ascent 67 m, descent 66 m
- Bloso MTB Herentals rood - mtb crosscountry, network lcn
- Bloso MTB Herentals zwart - mtb crosscountry, network lcn, 3 km, ascent 13 m, descent 12 m
- Bloso zwarte lus (Skiberg) - mtb crosscountry, network lcn
- Błotny Wąwóz - mtb, 0.5 km, ascent 0 m, descent 44 m
- Blowing Springs Connector - mtb, network lcn, ascent 0 m, descent 0 m
- Blowing Springs Connector-South - mtb, network lcn, 0.1 km, ascent 0 m, descent 2 m
- Blowing Springs Connector-South-Alt - mtb, network lcn, ascent 0 m, descent 0 m
- Blowing Springs Loop-Low Rider Connector - mtb, network lcn, 0.1 km, ascent 8 m, descent 0 m
- Blowing Springs Loop-North Upper - mtb, network lcn, 3.3 km, ascent 60 m, descent 94 m
- Blowing Springs Loop-Shortcut - mtb, network lcn, 0.1 km, ascent 0 m, descent 0 m
- Blowing Springs Loop-South Upper - mtb, network lcn, 3 km, ascent 93 m, descent 67 m
- Blowing Springs-Back 40 East Connector - mtb, network lcn, 0.2 km, ascent 2 m, descent 4 m
- Blowing Springs-Back 40 North Alternative Connector - mtb, network lcn, 0.2 km, ascent 15 m, descent 0 m
- Blowing Springs-Back 40 North Connector - mtb, network lcn, 0.5 km, ascent 23 m, descent 0 m
- Blue - mtb
- Blue - mtb
- Blue - mtb, network lcn, 5.5 km, ascent 119 m, descent 128 m
- Blue - mtb, 0.3 km, ascent 2 m, descent 11 m
- Blue - mtb, 2.7 km, ascent 33 m, descent 37 m
- Blue Berry - mtb crosscountry
- Blue Bunny - mtb, network lcn
- Blue Canyong - mtb downhill, 1.5 km, ascent 2 m, descent 173 m
- Blue Derby Trails - mtb crosscountry, 5.4 km, ascent 295 m, descent 166 m
- Blue Descent - mtb downhill, 2.1 km, ascent 11 m, descent 128 m
- Blue Fish - mtb crosscountry, 0.4 km, ascent 34 m, descent 1 m
- Blue Gums - mtb crosscountry, 1.3 km, ascent 63 m, descent 97 m
- Blue Gums - mtb crosscountry, 0.3 km, ascent 25 m, descent 1 m
- Blue Heelin' - mtb crosscountry, 2.1 km, ascent 20 m, descent 69 m
- Blue Heron - mtb, network lcn, operator Noquemanon Trail Network
- Blue Line - mtb, 1.2 km, ascent 7 m, descent 6 m
- Blue Lollipop - mtb, network lcn, 1.7 km, ascent 209 m, descent 6 m
- Blue Loop - mtb, network lcn
- Blue Loop - mtb, network lcn
- Blue Marsh Lake Multi-Use Trail - mtb, 45.8 km, ascent 654 m, descent 656 m
- Blue Route - mtb crosscountry, 12.1 km, ascent 204 m, descent 217 m
- Blue Route - mtb, 4.6 km, ascent 55 m, descent 55 m
- Blue Route - mtb, network lcn, operator Baltimore City Department of Public Works, 4.3 km, ascent 74 m, descent 107 m
- Blue route (moderate) - mtb crosscountry, 11.8 km, ascent 161 m, descent 121 m
- Blue Salamander - mtb, network lcn
- Blue Scar - mtb crosscountry, 6.9 km, ascent 223 m, descent 235 m
- Blue Shore - mtb downhill, 0.5 km, ascent 78 m, descent 0 m
- Blue Square, Black Diamond - mtb crosscountry, 0.1 km, ascent 0 m, descent 0 m