Cheltenham Bet Builder: How to Create Custom Bets on Festival Races
The cheltenham bet builder is one of the newer tools in the bookmaker’s armoury, and it represents a shift in how punters engage with individual races. Rather than simply backing a horse to win or placing an each-way bet, Bet Builder allows you to combine multiple outcomes within a single race into one wager — creating a custom proposition that reflects your specific view of how the race will unfold.
William Hill, as Festival sponsor, projects approximately £450 million in total wagering across the 2026 Cheltenham Festival. That enormous volume drives operators to innovate beyond standard win and place markets, and Bet Builder is the most visible product of that innovation. The feature originated in football betting, where combining goalscorer, corner, and card markets within a single match became hugely popular. Its migration to horse racing is more recent and more limited — but at Cheltenham, where the interest and investment justify expanded market depth, the available options are at their widest.
How Bet Builder Works for Horse Racing
In football, Bet Builder lets you combine dozens of in-match markets: first goalscorer, total goals, both teams to score, corners, cards. Horse racing offers fewer combinable elements, because the sport produces fewer discrete, measurable outcomes within a single event. What you can typically combine includes the winning horse, the number of runners to finish, the winning distance (over or under a specified margin), and whether a specific jockey or trainer will have the winner.
The pricing of a Bet Builder bet is determined by the bookmaker’s algorithms, not by the standard fixed odds displayed for individual markets. The combined price reflects the probability of all selected outcomes occurring together, adjusted for the bookmaker’s margin. Because the correlation between outcomes is assessed algorithmically, the resulting odds can sometimes offer reasonable value — and can sometimes carry a wider margin than a self-constructed accumulator of the same elements would.
Mobile devices generate 70% of online betting revenue, according to Uplatform research, and Bet Builder is a product designed specifically for the mobile experience. The interface works through a series of toggles and selections within the race page: choose the race, select your outcomes, and the app calculates the combined price in real time. The entire process takes under a minute, which suits the pace of a Festival afternoon where races are spaced roughly 35 minutes apart.
An example for Cheltenham: you believe the Gold Cup will be won by a specific horse, that the winning margin will be more than two lengths, and that the favourite will finish in the first three. Bet Builder combines these three elements into a single bet at combined odds. If all three outcomes occur, the bet pays out. If any one fails, the entire bet loses — just like a standard accumulator.
Which Bookmakers Offer Bet Builder at Cheltenham
Not all bookmakers offer Bet Builder on horse racing, and among those that do, the range of available markets varies significantly.
Sky Bet has the most developed Bet Builder for horse racing among the major UK operators. The tool is integrated directly into the race page within the app, with a clearly visible “Build a Bet” button that opens the available market options. Sky Bet’s horse racing Bet Builder typically includes winner, place, winning distance, and selected jockey/trainer markets during major festivals.
bet365 offers a Bet Builder product that covers Cheltenham feature races, though the range of combinable markets is slightly narrower than Sky Bet’s. The interface is functional and fast, consistent with bet365’s broader platform quality.
Paddy Power and Betfair Sportsbook, both under the Flutter umbrella, provide Bet Builder on horse racing with a growing range of markets. Paddy Power’s implementation benefits from the brand’s promotional approach — Bet Builder bets are sometimes eligible for enhanced odds or money-back specials during Cheltenham week.
William Hill and Ladbrokes both offer Bet Builder products, though the horse racing coverage is more limited than the football implementations that drive most of their Bet Builder activity. During Cheltenham, the availability typically expands to cover all feature races, but supporting handicaps may have fewer combinable options.
With 24.4 million active online gambling accounts across UK operators according to UKGC data, the competitive pressure to expand Bet Builder for horse racing is significant. Expect the range of available markets to grow with each Festival — but also expect the bookmaker’s algorithmic margin on these bets to remain wider than on standard fixed-odds markets, because the operator is pricing correlated outcomes without the benefit of deep historical data.
Tips for Bet Builder on Cheltenham and Limitations to Watch
The most important limitation is that Bet Builder for horse racing is still maturing. The range of available outcomes is narrower than for football, which means some combinations you might want to build simply are not available. If the specific market you want to include is not offered, the Bet Builder will not let you add it — there is no workaround.
Winning distance markets carry particular uncertainty at Cheltenham. The undulating track, the uphill finish, and the tactical nature of jump racing mean that winning margins are less predictable than in flat racing. A horse might be five lengths clear at the last fence and win by a neck after the hill takes its toll. Including winning distance in a Bet Builder adds a layer of variance that is difficult to analyse with confidence.
Free bets are sometimes eligible for Bet Builder wagers, but not always. Check the terms of your specific free bet before attempting to use it on a Bet Builder selection. Some operators restrict free bet use to standard win or each-way markets, which would exclude Bet Builder bets entirely.
The practical tip is to treat Bet Builder as an entertainment product rather than an analytical one. The value lies in the personalisation — the ability to construct a bet that reflects your specific view of a race rather than simply backing a horse. The margin is wider, the complexity is higher, and the risk is compounded. For a small-stakes bet that adds an extra dimension of engagement to a Cheltenham afternoon, Bet Builder delivers. For serious value-seeking, standard win, each-way, and exchange betting remain more efficient tools.
If you are new to Bet Builder, start with a simple two-element combination in one of Tuesday’s opening races. Pick the winner and a winning distance market — just two elements, keeping the complexity low while you learn how the interface works and how the combined odds are calculated. Build complexity gradually across the week rather than constructing a four-element bet on your first attempt and discovering the hard way that the margin swallows most of the theoretical value.
Responsible Gambling Reminder
Bet Builder’s personalisation can make each bet feel more involved and therefore more tempting to place. The fact that you designed the bet yourself does not improve the probability of it winning. Apply the same stake discipline to Bet Builder bets as you would to any other wager, and remember that the compounded margin means the house edge is typically higher than on standard markets. For support, visit www.begambleaware.org or call 0808 8020 133.