There are 24 upcoming half marathon races in Berkshire listed. Next up: Windsor Dorney Lakeside Half Marathon (Sunday, 18 October 2026), Maidenhead Half Marathon (Sunday, 25 October 2026), Run Dorney Lake Half Marathon, 10k & 5k (Sunday, 8 November 2026).
Upcoming races only, soonest first. Confirm dates and entry details with the organiser.
Windsor · Dorney Lake, Off Court Lane, Windsor, Berks, SL4 6QP
Windsor Dorney Lakeside Half Marathon is organised by Run UK in Windsor. Entry options: Windsor Dorney Lakeside Half Marathon . The course surface has not been confirmed.
£36.21
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Maidenhead · The Moor, Maidenhead
A closed-road race from The Moor. The half marathon uses two laps; the 10K uses one.
£31.50–£49.35
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Windsor · Dorney Lake, Windsor, Berks
Flat, paved laps around Dorney Lake. The number of laps depends on the distance entered.
£29.40–£35.70
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Windsor · Alexandra Gardens, Alma Rd, Windsor SL4 3HU
A riverside trail race based at Alexandra Gardens, with 10K and half-marathon options.
£36.75–£44.10
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Windsor · Alma Road, Windsor SL4 3HU, UK
THAMES PATH TRAIL RUN is organised by UK Running Events in Windsor. Entry options: 21K: Runner Entry; 16K: Runner Entry.
£37.50–£42.50
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Reading · Mapledurham Estate, Mapledurham, Reading, Berkshire, RG4 7TR
Mapledurham 10 Mile, 10K & Half Marathon takes place in Reading on 29 November 2026. Organised by MST Events. Published venue: Mapledurham Estate, Mapledurham, Reading, Berkshire, RG4 7TR. Check the organiser’s booking page for the full route, start arrangements, age requirements and current entry conditions.
£32–£37
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Windsor · Dorney Lake, Windsor, Berks
Flat, paved laps around Dorney Lake. The number of laps depends on the distance entered.
£29.40–£35.70
See entry options & fees
Windsor · Dorney Lake, Windsor, Berks
Flat, paved laps around Dorney Lake. The number of laps depends on the distance entered.
£29.40–£35.70
See entry options & fees
Windsor · Alexandra Gardens, Alma Rd, Windsor SL4 3HU
A riverside trail race based at Alexandra Gardens, with 10K and half-marathon options.
£36.75–£44.10
See entry options & fees
Windsor · Dorney Lake, Windsor, Berks
Flat, paved laps around Dorney Lake. The number of laps depends on the distance entered.
£29.40–£35.70
See entry options & fees
Windsor · Dorney Lake, Windsor, Berks
Flat, paved laps around Dorney Lake. The number of laps depends on the distance entered.
£29.40–£35.70
See entry options & fees
Reading
Reading's spring road half marathon.
Price not confirmed
Windsor · Dorney Lake, Court Lane, off Lake End Road, Windsor SL4 6FJ
Run Dorney Lake - April takes place in Windsor on 03 April 2027. Organised by Dorney Lake Events. Published venue: Dorney Lake, Court Lane, off Lake End Road, Windsor SL4 6FJ. Check the organiser’s booking page for the full route, start arrangements, age requirements and current entry conditions.
£28–£34
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Windsor · Alexandra Gardens, Alma Rd, Windsor SL4 3HU
A riverside trail race based at Alexandra Gardens, with 10K and half-marathon options.
£36.75–£44.10
See entry options & fees
Windsor · Dorney Lake, Court Lane, off Lake End Road, Windsor SL4 6FJ
Run Dorney Lake - May takes place in Windsor on 01 May 2027. Organised by Dorney Lake Events. Published venue: Dorney Lake, Court Lane, off Lake End Road, Windsor SL4 6FJ. Check the organiser’s booking page for the full route, start arrangements, age requirements and current entry conditions.
£28–£34
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Reading · Reading RG4 7TR, UK
Goring Gap Trails Festival is organised by Good Running Events in Reading. The published event dates run from 2027-05-22 to 2027-05-23. Entry options: Goring Gap Half Marathon; Goring Gap 52K Ultra Run; Goring Gap 50 Mile Ultra Run; Goring Gap Trail Walks - Half Marathon; Goring Gap Trail Walks - Marathon.
£38–£82
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Windsor · Dorney Lake, Court Lane, off Lake End Road, Windsor SL4 6FJ
Run Dorney Lake - June takes place in Windsor on 12 June 2027. Organised by Dorney Lake Events. Published venue: Dorney Lake, Court Lane, off Lake End Road, Windsor SL4 6FJ. Check the organiser’s booking page for the full route, start arrangements, age requirements and current entry conditions.
£28–£34
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Windsor · Dorney Lake, Court Lane, off Lake End Road, Windsor SL4 6FJ
Mindweek Run Dorney Lake - July takes place in Windsor on 07 July 2027. Organised by Dorney Lake Events. Published venue: Dorney Lake, Court Lane, off Lake End Road, Windsor SL4 6FJ. Check the organiser’s booking page for the full route, start arrangements, age requirements and current entry conditions.
£28–£34
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Windsor · Dorney Lake, Court Lane, off Lake End Road, Windsor SL4 6FJ
Run Dorney Lake - July takes place in Windsor on 18 July 2027. Organised by Dorney Lake Events. Published venue: Dorney Lake, Court Lane, off Lake End Road, Windsor SL4 6FJ. Check the organiser’s booking page for the full route, start arrangements, age requirements and current entry conditions.
£28–£34
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Windsor · Dorney Lake, Court Lane, off Lake End Road, Windsor SL4 6FJ
Run Dorney Lake - July takes place in Windsor on 31 July 2027. Organised by Dorney Lake Events. Published venue: Dorney Lake, Court Lane, off Lake End Road, Windsor SL4 6FJ. Check the organiser’s booking page for the full route, start arrangements, age requirements and current entry conditions.
£28–£34
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Newbury · The Racecourse, Newbury, Berkshire, RG14 7PN
Run laps of the paved circuit within and around Newbury Racecourse.
£29.40–£35.70
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Windsor · Alexandra Gardens, Alma Rd, Windsor SL4 3HU
A riverside trail race based at Alexandra Gardens, with 10K and half-marathon options.
£36.75–£44.10
See entry options & fees
Windsor · Windsor SL4 2BD, UK
Windsor Half Marathon 2027 is organised by RUN-FEST.com in Windsor. Entry options: Half Marathon Early Bird. The course surface has not been confirmed.
£38
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Windsor · Alexandra Gardens, Alma Road, Windsor, SL4 3HY, United Kingdom
Windsor Trail Half Marathon & 10k is organised by RunThrough Events in Windsor. Entry options: Half Marathon; 10k.
£37–£45
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