sat3feb8:30 amTHAMES TROT 5050 miles8:30 am Hawkwell House Hotel, Church Way, Iffley Village, Oxford OX4 4DZ Region:South Central

sat3feb - 4feb 39:00 amfeb 4The Pilgrim Challenge - Sealskinz Ultra Trail Series66 miles9:00 am - 6:00 pm (4) Sandy Farm Business Park, Sandy Lane, Farnham, GU101PXRegion:South Central

fri9feb12:00 pmThe Arc of Attrition100 miles12:00 pm Blue Bar, Porthtowan, Cornwall TR4 8AWRegion:South West

sun11feb8:00 amBrecon to Cardiff Ultra70 km8:00 am aspire fitness, Coleg y Cymoedd, Heol Cronchendy, Parc Nantgarw, Nantgarw CF15 7QX Region:Wales

fri23mar - 25mar 2311:30 ammar 25Jurassic Coast Challenge78 miles11:30 am - 8:00 pm (25) ​Weymouth & Portland Sailing Academy, Osprey Quay, Portland, Dorset, DT5 1SARegion:South West

sun25mar7:00 amCanalathon 100k100 km7:00 am Sowerby Bridge Leisure Centre & Pool, Station Road, Sowerby Bridge, West Yorkshire HX6 3ABRegion:North East

sat31mar12:00 amTHE B2R MIDNIGHT ULTRA 80 miles40 miles12:00 am Bynea Cycle Club, Heol y Bwlch, Bynea, LlanelliRegion:Wales

sat7apr6:30 amKielder Ultra 100k100 km6:30 am Hawkhirst Scout Activity Centre, Kielder Water, Hexham, Northumberland NE48 1QZRegion:North East

sat7apr8:30 amSOUTH DOWNS WAY 5050 miles8:30 am Hillbarn Recreation Ground, Hill Barn Lane, Worthing, West Sussex BN14 9QFRegion:South East

sat5may10:00 amTHAMES PATH 100100 miles10:00 am Richmond Old Town Hall, Whittaker Ave, Richmond TW9 1TPRegion:South East

sat12may8:00 amPembrokeshire 100 mile ultra100 miles8:00 am Dale, Haverfordwest, Pembrokeshire SA73 3AURegion:Wales

sat19may7:00 amWestcountry Ultra 100 Miler50 miles7:00 am Canal Road, Taunton TA1 1PNRegion:South West

sat19may7:30 amWestcountry Ultra Flat 5050 miles7:30 am Canal Road, Taunton TA1 1PNRegion:South West

sat19may8:00 amNORTH DOWNS WAY 5050 miles8:00 am St Polycarps School, Waverley Lane, Farnham GU9 8BQRegion:South Central

sat19may10:30 amWestcountry Ultra Hilly 5050 miles10:30 am West Somerset College, Bircham Rd, Minehead TA24 6AYRegion:South West

sat9jun6:00 amSOUTH DOWNS WAY 100100 miles6:00 am Chilcomb Sports Ground, WinchesterRegion:South Central

sat4aug6:00 amNORTH DOWNS WAY 100100 miles6:00 am St Polycarps School, Waverley Lane, Farnham GU9 8BQRegion:South Central

sat11aug12:05 amThe Rat 64 Miles12:05 am Porthpean Outdoor Centre, Castle Gotha Farm, Porthpean, Saint Austell PL26 6AZRegion:South West

sat15sep9:00 amCHILTERN WONDERLAND 5050 miles9:00 am Goring Village Hall, High Street, Goring-on-Thames, Oxfordshire, RG8 9AG.Region:South Central

sat13oct10:00 amAUTUMN 100100 miles10:00 am Goring Village Hall, High Street, Goring-on-Thames, Oxfordshire, RG8 9AG.Region:South Central