Four days. That’s how long the leaked 2027 calendar lasted before the real one showed up and made half of it wrong.

The WHOOP UCI Mountain Bike World Series confirmed its official 2027 calendar on October 29 — ten rounds across eight countries, not the twelve XCO/XCC plus ten DH rounds that leaked out of a PianetaMTB-sourced draft four days earlier. We covered that leak on October 26, and at the time it was the best information anyone had. It just wasn’t the final answer. The real calendar is smaller, more evenly split between continents than the leak suggested, and ends with both season finales on US and Canadian soil instead of staying Europe-heavy the way the draft implied.

Quick Take: Leak vs. Reality

	Leaked Draft (Oct 26)	Official Calendar (Oct 29)
Total rounds	12 XCO/XCC + 10 DH	10 total — 8 XC, 8 DH
Geographic framing	9 of 12 XCO rounds in Europe	Europe opens, North America closes
Season window	Mid-April to early October	May 21 to October 3
XC finale	Unconfirmed, Soldier Hollow rumored penultimate	Soldier Hollow, Midway, UT — Sept 25-26
DH finale	Unconfirmed	Whistler, BC — Oct 2-3
Format	Standalone rounds, tightly packed	Six triple-header weekends combining XCC/XCO/DH
Confirmed by	PianetaMTB, Pinkbike, Brújula Bike, Escape Collective, RyanMTB	UCI/WHOOP, BikeMag, Brújula Bike, Canadian Cycling Magazine, Park Record
Best for	Nobody now — this is the superseded version
Skip if	You already booked travel off the leak. Rebook.

What the Official Calendar Actually Says

Ten rounds. Eight countries. Two continents. Eight cross-country events, eight downhill events, run across six weekends where both disciplines share the same venue as a triple-header — short track, XCO, and DH stacked into one stop instead of spread across the calendar the way the draft had it.

That’s a smaller season than the leak promised, not a bigger one. The draft had riders bracing for 22 combined rounds. The real number is 10, with XC and DH sharing most of those weekends rather than running as separate circuits that happen to overlap on a few dates.

Cross-country opens May 21-23 at Nové Město na Moravě, Czechia — a short track and XCO weekend. Downhill opens a week later, May 29-30, at Loudenvielle-Peyragudes in France. From there the tour runs through Saalfelden Leogang (June 11-13), Les Gets (June 18-20) — a preview stop ahead of the region’s upcoming UCI Cycling World Championships — La Thuile (July 2-4), Pal Arinsal in Andorra (July 9-11), Lenzerheide (August 20-22), and Val di Sole (September 10-12), which returns after sitting out 2026’s World Championships rotation.

Then it jumps oceans for the finales.

Where the Leak Actually Got It Wrong

Our October 26 post on the leak flagged the headline number — 12 XCO/XCC rounds, 10 DH rounds — as the story everyone was running with, while noting PianetaMTB’s own framing wasn’t exactly celebratory about it (“crazy draft calendar” was the rough translation). We also noted the draft had nine of those twelve XCO rounds clustered in Europe, with three rounds scattered outside the continent and no confirmed venues for most of them.

None of that held up.

The official calendar isn’t an expansion. It’s roughly the same round count as the 2026 season, restructured into triple-headers instead of standalone stops. And the “mostly Europe” framing from the leak inverted once the real schedule landed: Europe gets the season’s open and its middle stretch, but North America gets the close — both of it. XC wraps in Utah. DH wraps in British Columbia. The leak’s geographic story was Europe-heavy with a few outlying rounds; the real story is Europe-opens, North-America-decides-the-titles.

Worth saying plainly: this isn’t a case of outlets getting the leak wrong. PianetaMTB’s draft, and the independent corroboration from Pinkbike and Escape Collective, was real reporting on a real document that was genuinely circulating in May. Draft calendars change between a federation’s internal planning stage and a broadcast partner’s final sign-off — budgets shift, venues drop out, formats get renegotiated. That’s exactly what happened here. It’s just a reminder that “leaked draft” and “confirmed calendar” are different products, and four days is apparently all it takes for one to stop resembling the other.

Both Finales, on This Side of the Atlantic

This is the detail that actually changes how the season reads.

Soldier Hollow hosted its first-ever UCI World Cup round in September 2026, a short-track and cross-country weekend that went to Martina Berta on both days. Our leak coverage had it tipped for a return as the penultimate XCO round — strong rumor, not confirmed. The official calendar goes further: Soldier Hollow isn’t penultimate. It’s the finale. September 25-26, Midway, Utah — the round that decides the cross-country overall.

Chris Ball, Skydance’s vice president of cycling events, called the venue “a premier mountain bike destination” offering “racing at the highest level, passionate crowds and an unforgettable atmosphere” in comments to Park Record. One World Cup weekend doesn’t usually buy a venue a season finale on the next try. Soldier Hollow just got one.

Whistler’s downhill track hosted its own first World Cup round in 2026, and for 2027 it closes the entire DH season — October 2-3, the weekend after Soldier Hollow wraps XC. North America already decided both titles in 2026, when Lake Placid ran XC and DH finales the same weekend. What’s new for 2027 is that the job splits across two separate venues and weekends instead of sharing one: Soldier Hollow settles XC in September, Whistler settles DH a week later in October.

Canadian Cycling Magazine’s coverage flags the other side of that: Canada gets exactly one stop in 2027, and it’s Whistler — no Mont-Sainte-Anne, which will disappoint anyone who followed that venue’s cross-country history. One big round beats none, but it’s a trade-off, not a clean win for Canadian racing.

Why This Matters More Than a Spreadsheet Update

Lake Placid closed out the 2026 DH season, where Asa Vermette became the first American to win the DH overall since 2017. We flagged in our leak coverage that Lake Placid’s organizing authority had declined to renew its UCI contract for 2027, which left an open question about which North American venue would fill the gap. The official calendar answers it: Whistler, with a bigger billing than before — not just a stop, the finale.

That’s a meaningfully different season shape than either the 2026 calendar or the leaked 2027 draft suggested. A finale on your home continent changes who shows up, what the crowd looks like, and — if you’re trying to watch any of this in person — which flights you’re actually booking.

How Many Rounds Are in the Official 2027 UCI MTB World Series Calendar?

1. 10 total rounds — 8 cross-country, 8 downhill — down from the leaked draft’s reported 12 XCO/XCC and 10 DH.
2. 8 countries across 2 continents, run through 6 triple-header weekends combining XCC, XCO, and DH at shared venues.
3. Season runs May 21 to October 3, 2027, opening in Czechia and closing in Canada — roughly the same length as the leaked window, restructured rather than expanded.
4. Cross-country ends September 25-26 at Soldier Hollow, Midway, Utah — the venue’s second-ever World Cup weekend, and its first as a season finale.
5. Downhill ends October 2-3 at Whistler, British Columbia — Canada’s only 2027 round, upgraded to the DH season closer.

Who Should Care About This

Anyone who read our leak coverage and started planning around it. The round count dropped, the format changed to triple-headers, and the finale venues are now locked — Soldier Hollow and Whistler, not whatever the draft’s “penultimate round” language implied.

Fans following the Soldier Hollow and Whistler storylines. Both venues went from first-time hosts in 2026 to season-finale hosts in 2027. That’s a fast promotion, and it says the UCI and its broadcast partner liked what they saw.

Anyone tracking the North American shift in MTB racing. Two finales, one continent, zero European rounds deciding a title — 2026’s Lake Placid weekend already did that in one shared venue. 2027 does it across two separate venues and weekends instead. That’s a bigger structural change than the round-count headline suggests.

Who Should Skip This

Anyone who already locked in travel based on the leaked draft’s “penultimate round” framing for Soldier Hollow. The venue moved up to finale status with different implied crowd size and scheduling pressure around it — worth re-checking logistics, not just dates.

Readers wanting a venue-by-venue breakdown of every 2027 round. We’ve covered the opener, the mid-season stops, and both finales here. If you need hotel-booking-level detail on Saalfelden Leogang or Pal Arinsal, that’s a separate piece.

The Bottom Line

The leaked draft said the 2027 UCI Mountain Bike World Series would grow to 22 combined rounds, mostly clustered in Europe. The official calendar, confirmed by the UCI and WHOOP on October 29, says 10 — restructured into triple-headers, opening in Czechia, and closing with both the cross-country and downhill titles decided in North America: Soldier Hollow on September 25-26, Whistler on October 2-3. We got the leak right as a leak. The leak itself just didn’t survive contact with the actual announcement, and four days wasn’t long enough to pretend otherwise.

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Reporting sourced from the official UCI MTB World Series announcement, BikeMag, Brújula Bike, Canadian Cycling Magazine, and Park Record. Leaked-draft reporting referenced from our October 26 coverage, sourced to PianetaMTB, Pinkbike, Brújula Bike, and Escape Collective.