Courses come up a lot in dobbing chat. Stiff uphill finishes, sharp turning tracks and long run-ins all get blamed or praised for how often front-runners fold. Here's what Betfair's own files say for 9 Nov 2025 – 9 Nov 2026.
Highest and lowest DOB rates
Among the 82 courses with at least 500 qualifying runners, the highest DOB rate was at Aintree (41.3% (233 of 564)) and the lowest was at Curragh (26.4% (616 of 2,329)).
| Course | Races | Runners* | DOB | DOB rate | Losers that hit ½ | Win rate |
|---|---|---|---|---|---|---|
| Aintree | 57 | 564 | 233 | 41.3% | 35.1% | 9.6% |
| Royal Ascot | 35 | 632 | 255 | 40.3% | 37.1% | 5.2% |
| Cheltenham | 90 | 1,059 | 427 | 40.3% | 34.9% | 8.3% |
| Exeter | 73 | 587 | 235 | 40.0% | 32.6% | 11.1% |
| Ludlow | 71 | 561 | 224 | 39.9% | 32.1% | 11.6% |
| Wetherby | 101 | 790 | 309 | 39.1% | 31.7% | 11.0% |
| Taunton | 81 | 684 | 266 | 38.9% | 31.5% | 10.8% |
| Kelso | 97 | 679 | 264 | 38.9% | 30.1% | 12.8% |
*Runners with a BSP of 2.02 or more and a recorded in-play low. “Losers that hit ½” = share of beaten horses that still traded at half their BSP or lower. Rates are hidden under 30 runners. Click a heading to sort.
Beaten runners are the better lens
A course's headline rate is pulled around by how many short-priced horses run there and how often they win. Looking only at beaten runners helps. On that measure the top course was Royal Ascot, where 37.1% of beaten runners still traded at half their BSP or lower, against 25.0% across all courses.
Why course isn't destiny
Every course hosts a mix of codes, race types, field sizes and prices, and those mixes differ a lot. An all-weather track running lots of short-field races will look different from a jumps track with big handicap fields, regardless of the bends. That's why every course page splits the numbers by code, race type, distance and price band, and shows sample sizes.
See also: Courses FAQ · Dobbing by race type
By The DoubleOrBust Team · Data 9 Nov 2025 – 9 Nov 2026, updated daily from Betfair's BSP files · How we count