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Triathlons Found In Summer 2026
View all ↓Triathlons In Summer 2026
The most comprehensive list of Triathlons in Summer 2026. Discover, compare and book the best Summer 2026 Triathlons near you!
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Race Calendar: Triathlons Summer 2026
Plymouth Triathlon
Mount Edgcumbe, Cremyl
Sun 14 Jun 26
£63.60 - £143.10
5.0
One for the Planet - Dorney Lake Triathlon
Windsor, Berkshire
Sun 14 Jun 26
£26.68 - £85.40
Royal Windsor Triathlon
Windsor, Berkshire
Sun 14 Jun 26
£101.00 - £167.00
Slateman Triathlon & Duathlon
Caernarfon, Gwynedd
Sun 14 Jun 26
£94.99 - £419.99
Cholmondeley Castle Triathlon & Multisport
Malpas, Cheshire
Sat 20 Jun 26 - Sun 21 Jun 26
£37.63 - £260.93
Southend Triathlon
Car park area of Uncle Toms Cabin, Shoebury Common Road, Southend-on-Sea, SS3 9HG
Sun 21 Jun 26
£53.28 - £116.95
ATW Stewartby Lake Triathlon & Aquabike
Stewartby Lake, Green Ln, Bedford MK43 9LY
Sun 21 Jun 26
£73.14 - £127.20
Bowood House Triathlon
Calne, Wiltshire
Sun 21 Jun 26
£32.00 - £97.00
Long Course Weekend Wales
Tenby, Dyfed
Fri 26 Jun 26 - Sun 28 Jun 26
£13.50 - £484.92
The Northumbrian Full & Half Iron-Distance Triathlon & Trails Runs
Hexham, Northumberland
Sat 27 Jun 26 - Sun 28 Jun 26
£40.00 - £350.00
5.0
ATW Triathlon - Mallory Park - June
Mallory Park Circuit, Church Road, Kirkby Mallory, Leicestershire, LE9 7QE
Sat 27 Jun 26 - Sun 28 Jun 26
£21.20 - £104.94
ATW Children’s Triathlon Mallory Park - June
Mallory Park Circuit, Church Road, Kirkby Mallory, Leicestershire, LE9 7QE
Sat 27 Jun 26
£21.20 - £32.86
The Saxon Triathlon
Northampton, Northamptonshire
Sun 28 Jun 26
£40.00 - £135.00
5.0
WILD HORSE BREWING CO. LLANDUDNO TRIATHLON & DUATHLON 2026
Llandudno, Gwynedd
Sun 28 Jun 26
£96.99 - £141.99
Dorney Lake Evening Triathlon - July
Dorney Lake, Court Lane, off Lake End Road, Windsor SL4 6FJ
Wed 01 Jul 26
£61.48 - £82.68
5.0
The FixAddiction Triathlon
Windsor, Buckinghamshire
Sat 04 Jul 26
£60.00
5.0
English Riviera Triathlon
The Kings Drive, Torquay, Devon, TQ2 5JE
Sun 05 Jul 26
£38.16 - £95.40
The Bridge Triathlon
The Bridge, Dartford, DA1 5PR
Sun 05 Jul 26
£47.26 - £94.32
ATW Odyssey At Box End Triathlon
Box End Lakes,Box End Rd, Bedford MK43 8RN
Sun 05 Jul 26
£73.14 - £196.10
Birmingham Triathlon 2026
Sutton Coldfield, West Midlands
Sat 11 Jul 26
£99.00 - £119.00
2026 - Upton Tri + Duathlon
Worcester, Worcestershire
Sat 11 Jul 26
£65.00 - £90.00
Dorney Lake Triathlon - July
Dorney Lake, Court Lane, off Lake End Road, Windsor SL4 6FJ
Sun 12 Jul 26
£61.48 - £127.20
4.7
Eastbourne Triathlon and Multisport Festival
Eastbourne, East Sussex
Sun 12 Jul 26
£17.00 - £259.00
ATW Bristol Triathlon
Brunel Lock Rd, Cumberland Basin, Bristol,
Sun 12 Jul 26
£79.50 - £137.80
The One on the River - Marlow Summer Triathlon
Marlow, Buckinghamshire
Sun 12 Jul 26
£26.68 - £117.42
Belvoir Castle Triathlon & Mulitsport
Grantham, Belvoir, Leicestershire
Sat 18 Jul 26 - Sun 19 Jul 26
£37.63 - £260.93
5.0
Castle To Coast Triathlon
Dorney Lake,
Sat 18 Jul 26
£270.00 - £295.00
Marlow Triathlon
Marlow, Buckinghamshire
Sun 19 Jul 26
£72.00 - £152.00
Frome Triathlon 2026
Frome, Somerset
Sun 19 Jul 26
£55.00 - £90.00
On The Edge & Compton Verney Triathlons
Warwick, Warwickshire
Sun 19 Jul 26
£75.00 - £191.00
Eton Dorney Family Triathlon
Dorney Lake, Court Lane, Windsor, SL4 6QP
Sun 19 Jul 26
£39.98 - £93.62
London T100 Triathlon 2026
London
Sat 25 Jul 26 - Sun 26 Jul 26
£88.00 - £488.00
Dorney Lake Triathlon 26th July
Dorney Lake, Court Lane, off Lake End Road, Windsor SL4 6FJ
Sun 26 Jul 26
£61.48 - £127.20
4.7
Guildford Triathlon & Kids Races
Guildford, Surrey
Sun 26 Jul 26
£27.00 - £67.00
ATW Mallory Park Triathlon - Incorporating the 2027 European Age Group Championship Sprint Triathlon Qualifier.
Mallory Park Circuit, Church Road, Kirkby Mallory, Leicestershire, LE9 7QE
Sat 01 Aug 26
£63.60 - £95.40
Cowman Triathlon
Olney, Buckinghamshire
Sun 02 Aug 26
£68.00 - £141.50
5.0
Sri Chinmoy TRY A TRI beginner's triathlon 2026
Bristol, Avon
Sun 02 Aug 26
£20.00
The Bridge Childrens Triathlon
Dartford Bridge
Sun 02 Aug 26
£27.39 - £36.81
Dorney Lake Triathlon August
Dorney Lake, Court Lane, off Lake End Road, Windsor SL4 6FJ
Sat 08 Aug 26
£61.48 - £127.20
4.7
ATW St Neots Triathlon - Race 2
Riverside Park, Regatta Meadow, St Neots, Cambridgeshire, PE19 7AB
Sat 08 Aug 26
£73.14 - £127.20
Showing 1-40 of 60 results