July 24, 2026
by Emma Harrison
The world’s fastest sailboats return to the English coast this weekend as the Emirates Great Britain Sail Grand Prix begins in Portsmouth. Race Day 1 is on July 25, and prediction market platforms are sure to be humming with activity.
Australia’s BONDS Flying Roos won the first three editions of the SailGP championship and lead the current edition, and Tom Slingsby will be looking to propel them to another win in this stage. Last time out it was Los Gallos that won in Canada, so Slingsby and co. will be feeling like they have a few wrongs to right.
It would always be naive to predict against the Flying Roos, who have a strong history in the competition, and yet the winner-takes-all format of the final race means that it’s never over until it’s over. And indeed, in the last two championships, despite dominating the lead-up to the final, Australian hopes were dashed on the final day. A win for Los Gallos last time out, along with their triumph in the 2025 championship, means that confidence will be running high among their sailors ahead of this race. Emirates GBR will also attract some attention on the prediction markets, as it’s their home race and they, too, are former world champions.
Best prediction markets for Sail GP Portsmouth
Getting in on the action at the top sports prediction markets is easier than ever, and we have a look at the best platforms to test your knowledge on ahead of this weekend’s SailGP action.
Kalshi – best for esoteric markets
Kalshi: Pros & Cons - Broad range of markets
- 24/7 live chat support
- Huge reputation
- Native mobile app
It’s one thing to have the chance to predict who will win a race or indeed who won’t, but if you have in-depth knowledge of a sport you’ll often want to put your predictions to the test in more challenging ways, like margins of victory or similarly diverse markets. As we cover in our Kalshi review, the range of markets available on this platform is market-leading. If you want to flex your knowledge of a sport, Kalshi is the site for you, and it also permits you to get a leg up by taking advantage of their $10 signup offer, available via this site.
Polymarket – best for main markets
Polymarket: Pros and Cons - Numerous markets on sports, crypto, the economy, and politics
- Regulated by the CFTC
- Multiple rewards for existing traders
Reliability is an underrated quality in prediction markets, and for some users the most important thing is simply knowing that there will be markets available on the topics they want to cover, and that those markets will have consistent liquidity. Both of these elements are a watchword of Polymarket, which has become perhaps the foremost platform for fans who want to test their hunches. As we make clear in our Polymarket review, this is a site that knows what potential predictors are looking for, and makes sure to provide it – including a $50 promo for new signups.
Crypto.com: Pros and Cons - Welcome bonus
- Broad range of markets
- High-performance mobile app
Crypto.com did not begin life as a prediction market platform, unlike the other names on our list. Instead, it started out as a more standard trading site with a particular focus on cryptocurrency. If you have a balance in crypto, you can use those coins (the site accepts up to 350 different cryptocurrencies) to fund an account at Crypto.com and make use of their signup bonus, which does not require a Crypto.com promo code to trigger and bestows a matched deposit up to $250. Oh, that’s another thing to be aware of: although you may deposit in crypto, your balance will be converted to USD in order to simplify the trading aspect.
Make your picks for Sail GP Portsmouth
This round of the Sail GP championship could see Australia extend their lead, or permit a rival team to pull closer to them in the overall race classification. Either way, you have plenty of options not just for teams to back, but also when it comes to prediction market platforms on which to make your picks. One click on our banners and links is all it takes to get to the top sites, so why not take a look now?