Great Ouse Marathon
Time trial
21,500m course
- Date
- Sunday 5 September 2027
- Organised by
- Isle of Ely Rowing Club
Great Ouse Marathon is a time trial. It is held on Sunday 5 September 2027 at West Norfolk Rowing Club, Denver, Ely, Cambridgeshire over a 21,500m course. The event is organised by Isle of Ely Rowing Club. Great Ouse Marathon offers 3 boat classes, including eights, fours, singles.
Entries at a glance
From the last 2 races (2025 to 2026).
115
crews a year on average
60%
masters
90%
sculling boats
14
eights raced
Masters: 138 crews over 2 races, mostly singles, doubles and quads. Bands A to I raced.
Who races here
Over the last 2 races (2025 to 2026) this race averaged 115 crews. Most crews were masters (60%). Sculling boats made up 90% of entries. Masters crews made up 60% (138 crews), mostly singles and doubles.
229 crews across 2 editions. The grids combine all years shown.
Will my crew have racing here?
See which crews raced before. This does not confirm this year's entry categories.
Masters E men's single: 16 matching crews raced over 2 years.
- 2026: 3 band E men's crews raced in Masters E men's single, band 1 (3 crews); 3 band E men's crews raced in Masters E men's single, band 2 (3 crews)
- 2025: 3 band E men's crews raced in Masters E men's single, band 1 (3 crews); 3 band E men's crews raced in Masters E men's single, band 2 (3 crews); 4 band E men's crews raced in Masters E men's single, band 3 (4 crews)
Junior crews can often enter an older age category. Check the event's rules.
Crews by age and boat
Choose a cell to check your crew. Darker blue means more crews.
Scroll sideways to see every boat or band.
| Age group | 1x Single | 2x Double | 2- Pair | 4x Quad | 4x+ Coxed quad | 4- Four | 4+ Coxed four | 8+ Eight | 8x+ Sculling eight | All boats |
|---|---|---|---|---|---|---|---|---|---|---|
| Junior | 20 | |||||||||
| Senior and open | 71 | |||||||||
| Masters | 138 | |||||||||
| University and college | 0 | |||||||||
| Beginner | 0 | |||||||||
| All ages | 94 | 60 | 2 | 45 | 6 | 2 | 6 | 13 | 1 | 229 |
Crews per cell
0
1-9
10-24
25-49
50-99
100-199
200+
Masters crews by band
Each crew counts in its own band. Choose a cell to see the races.
| Boat | A | B | C | D | E | F | G | H | I | J | K |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1x Single | |||||||||||
| 2x Double | |||||||||||
| 2- Pair | |||||||||||
| 4x Quad | |||||||||||
| 4x+ Coxed quad | |||||||||||
| 4- Four | |||||||||||
| 4+ Coxed four | |||||||||||
| 8+ Eight | |||||||||||
| 8x+ Sculling eight |
Crews per cell
0
1-9
10-24
25-49
50-99
100-199
200+
Categories raced
Open an age group to compare categories. Counts are crews in each year.
Scroll the table sideways to see all years.
Junior 12 categories raced
| Category | 2025 | 2026 |
|---|---|---|
| J16 single Op.J16.1x | 3 | 1 |
| J16 women's single W.J16.1x | 2 | 2 |
| J16 double Op.J16.2x | 1 | 1 |
| J18 women's single W.J18.1x | - | 2 |
| J16 coxed four Op.J16.4+ | - | 1 |
| J17 double Op.J17.2x | - | 1 |
| J17 women's double W.J17.2x | - | 1 |
| J17 women's quad W.J17.4x | - | 1 |
| J17 women's single W.J17.1x | - | 1 |
| J18 double Op.J18.2x | - | 1 |
| J18 quad Op.J18.4x | - | 1 |
| J18 sculling eight Op.J18.8x+ | 1 | - |
Senior and open 20 categories raced
| Category | 2025 | 2026 |
|---|---|---|
| Open quad Op.4x | 3 | 4 |
| Open double, band 1 B1.Op.2x | 2 | 4 |
| Open double, band 2 B2.Op.2x | 2 | 3 |
| Women's double W.2x | 4 | 1 |
| Women's quad W.4x | - | 5 |
| Mixed eight Mx.8+ | 2 | 2 |
| Open single, band 2 B2.Op.1x | 4 | - |
| Open single, band 3 B3.Op.1x | 4 | - |
| Women's single, band 2 B2.W.1x | 4 | - |
| Women's single, band 3 B3.W.1x | 4 | - |
| Mixed quad Mx.4x | 2 | 1 |
| Open single Op.1x | - | 3 |
| Open single, band 1 B1.Op.1x | 3 | - |
| Women's coxed four W.4+ | 3 | - |
| Women's single W.1x | - | 3 |
| Open coxless four Op.4- | 2 | - |
| Women's eight W.8+ | 1 | 1 |
| Women's single, band 1 B1.W.1x | 2 | - |
| Open eight Op.8+ | 1 | - |
| Women's coxed quad W.4x+ | 1 | - |
Masters 49 categories raced
| Category | 2025 | 2026 |
|---|---|---|
| Masters D women's single W.Mas.D.1x | 3 | 4 |
| Masters E women's single W.Mas.E.1x | 3 | 4 |
| Masters E men's single, band 1 B1.Op.Mas.E.1x | 3 | 3 |
| Masters E men's single, band 2 B2.Op.Mas.E.1x | 3 | 3 |
| Masters B men's single Op.Mas.B.1x | 3 | 2 |
| Masters D men's quad Op.Mas.D.4x | - | 5 |
| Masters D women's double W.Mas.D.2x | 4 | - |
| Masters E men's double Op.Mas.E.2x | 4 | - |
| Masters E men's single, band 3 B3.Op.Mas.E.1x | 4 | - |
| Masters E women's double W.Mas.E.2x | 4 | - |
| Masters G men's single, band 1 B1.Op.Mas.G.1x | - | 4 |
| Mixed masters D double Mx.Mas.D.2x | 1 | 3 |
| Masters C men's coxed quad Op.Mas.C.4x+ | 2 | 1 |
| Masters C men's double, band 1 B1.Op.Mas.C.2x | 3 | - |
| Masters C men's double, band 2 B2.Op.Mas.C.2x | 3 | - |
| Masters C men's single, band 1 B1.Op.Mas.C.1x | 3 | - |
| Masters C men's single, band 2 B2.Op.Mas.C.1x | 3 | - |
| Masters C women's double W.Mas.C.2x | - | 3 |
| Masters C women's quad, band 1 B1.W.Mas.C.4x | 3 | - |
| Masters C women's quad, band 2 B2.W.Mas.C.4x | 3 | - |
| Masters E women's double, band 1 B1.W.Mas.E.2x | - | 3 |
| Masters E women's double, band 2 B2.W.Mas.E.2x | - | 3 |
| Masters E women's quad W.Mas.E.4x | - | 3 |
| Masters F men's quad Op.Mas.F.4x | 3 | - |
| Masters F men's single Op.Mas.F.1x | 3 | - |
| Masters G men's single Op.Mas.G.1x | 3 | - |
| Masters G men's single, band 2 B2.Op.Mas.G.1x | - | 3 |
| Mixed masters C quad Mx.Mas.C.4x | 3 | - |
| Mixed masters F double Mx.Mas.F.2x | 3 | - |
| Mixed masters F quad Mx.Mas.F.4x | - | 3 |
| Masters A men's single Op.Mas.A.1x | 2 | - |
| Masters B women's quad W.Mas.B.4x | 2 | - |
| Masters C women's eight W.Mas.C.8+ | - | 2 |
| Masters F men's double Op.Mas.F.2x | - | 2 |
| Masters G men's eight Op.Mas.G.8+ | 1 | 1 |
| Masters B men's coxless pair Op.Mas.B.2- | 1 | - |
| Masters D men's coxless pair Op.Mas.D.2- | 1 | - |
| Masters D women's eight W.Mas.D.8+ | 1 | - |
| Masters E men's coxed four Op.Mas.E.4+ | 1 | - |
| Masters F women's coxed four W.Mas.F.4+ | - | 1 |
| Masters F women's coxed quad W.Mas.F.4x+ | 1 | - |
| Masters G men's quad Op.Mas.G.4x | - | 1 |
| Masters I men's double Op.Mas.I.2x | - | 1 |
| Mixed masters B coxed quad Mx.Mas.B.4x+ | 1 | - |
| Mixed masters B double Mx.Mas.B.2x | - | 1 |
| Mixed masters C double Mx.Mas.C.2x | - | 1 |
| Mixed masters D quad Mx.Mas.D.4x | - | 1 |
| Mixed masters E eight Mx.Mas.E.8+ | - | 1 |
| Mixed masters E quad Mx.Mas.E.4x | - | 1 |
Counts come from the published results of past races. Organisers can merge or split categories each year, so check the current entry categories before you enter.
Venue location
About this time trial
The Great Ouse Marathon is an annual rowing event hosted by the Isle of Ely Rowing Club that invites rowers of all experience levels to compete on a 21.5km course along the River Great Ouse.
Course
The course starts at West Norfolk Rowing Club, runs upstream along the River Great Ouse and finishes just before Queen Adelaide Bridge.
Boat classes
- eights
- fours
- singles
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Great Ouse Marathon 2027: common questions
When does Great Ouse Marathon 2027 take place?
Great Ouse Marathon 2027 is on Sunday 5 September 2027.
Where is Great Ouse Marathon held?
Great Ouse Marathon is held at West Norfolk Rowing Club, Denver, Ely, Cambridgeshire.
What format is Great Ouse Marathon raced in?
Great Ouse Marathon is a time trial (21,500m).
Which boat classes race at Great Ouse Marathon?
Great Ouse Marathon runs 3 boat classes: eights, fours, singles.
Who can race at Great Ouse Marathon?
Great Ouse Marathon takes entries for juniors, seniors, masters crews.
How do crews enter Great Ouse Marathon?
Entry information is published on the official regatta website (elyrowingclub.org.uk). Isle of Ely Rowing Club is responsible for entries and on-the-day logistics.
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