Saturday's meeting at Doncaster, which was due to feature the Sky Bet Chase, has been abandoned due to snow.
Clerk of the course Roderick Duncan was forced to call off Friday's card, the first of a two-day fixture on Town Moor, following an inspection on Wednesday. He then called a 2pm check for Saturday's card, which showed the track to be unraceable with no chance of sufficient improvement.
Duncan said: "We have abandoned due to snow and frost. There's a severe frost forecast for tonight, with temperatures down to minus 4C or minus 5C. Temperatures are then not due to rise above zero on Friday with a Met Office warning for further snow on Friday night, so there is no hope."
Officials at Cheltenham are "extremely hopeful" Saturday's Trials Day meeting will go ahead as planned. Staff at Prestbury Park have been battling the elements all week as they try to get the track ready for a meeting which is set to feature Sprinter Sacre.
While the track has been covered for over a week to guard against frost, snow earlier this week looked problematic as it was lying on top of the covers. However, clerk of the course Simon Claisse and his team have been working to remove the snow.
And while an 8am inspection is still planned for Friday, officials are optimistic about their chances of racing. Should the track not be fit on Saturday, Cheltenham also has the option of delaying the meeting by 24 hours to Sunday.
Cheltenham communications manager Andy Clifton said: "There's been a mammoth effort from the ground staff and the maintenance teams over the last couple of days to clear the covers. I think they have cleared around a third of the snow from the track and most of the remainder will be removed today.
"We are forecast frost tonight, with temperatures set to drop to minus 4C, but once that's cleared in the morning, we will take the covers off tomorrow afternoon.
"There's a bit of snow forecast on Friday evening followed by rain but with temperatures above freezing so that is not a worry, as things stand. It's soft ground but we can take some rain and as the snow has been largely cleared off the covers, it will not be melting on to the track.
"We will hold the inspection at 8am on Friday as planned, and at that point we expect to be able to give the go-ahead for Saturday. However, having come this far, we will retain the option of racing on Sunday and have declarations for that ghost card, as it is. We are extremely hopeful of racing going ahead as planned on Saturday, though."
31 October 2014Day to remember for Ellison
Johnson remains under observation
Conti chasing second Charlie Hall
Terror scares Newmarket rivals
Filleule faces Champion test
Terror scares off Newmarket rivals
Sgt far from Reckless at Uttoxeter
Little King wears Down Royal crown
Nicholls goes on Charm offensive
Fishers angling for Wetherby prize
Lavelle star Bec in business
Weld out to break new ground
Osborne ready to 'roll the dice'
Dank bids to sign off on a high
Turf glory in sight for Telescope
Red Ed upbeat about Cadeaux
Aktabantay out of Breeders' Cup
Tearless secures Good Friday ticket
Overnight stay for Johnson
Crawford banks on Izzini progress
Toast could make Spencer think
Road charts route to Royal riches
Grece excels at Saint-Cloud
Hawk given Greatwood option
Hannon: Early speed key for Osaila
30 October 2014Tearless takes Lingfield honours
Johnson taken to hospital
Royal summons for Apache
Bowe takes aim at WKD bullseye
Hootenanny 'smoking' for BC mission
Avenue roads lead to Newmarket
Shu to be kept busy
Scu sweet on Sensation Ascot raid
Murtagh succumbs to Cup charms
Dandino to stay in Australia
Glance denied Mackinnon defence
Bailey ace rules Supreme at Taunton
O'Brien hit by Magician blow
Diablo in big-race picture
Buckley raises Toast to Osborne
Pastille seeking four-timer
Conti all set for Charlie Hall
Barnes out to storm Saint-Cloud
Williams issues Buywise warning
Lynam reveals Slade stalls fears
29 October 2014Lame Magician out of Breeders' Cup
Diablo in big-race picture
Mullins enters strong Hennessy team
Damaged hock behind Estid reverse
Eckhart team rocked by injury blow
Hunt Ball makes Power play
Morgiana a T bone of contention
Kirby ponders Buttons French raid
Glance camp turn to Williams
Wohler trusts 'professional' Moore
Red alert to Cup challenge
Head targets more Mile glory
Mile hope Toronado in 'great form'
Telescope camp banking on Moore
Twiston-Davies link excites Moore
Flying third to Bob on hurdling bow
Harden to test top staying waters
Godolphin take share in Belardo
Mullins has big guns at Down Royal
Annacotty set for Kempton return
Powell and Bradley cleared
28 October 2014Fingal camp on weather watch
More injury woe for Popham
Dickin unveils Thomas gameplan
Power stalls in Flemington spin
Toast drawn nine in BC Classic
My Ambivalent passed fit by vets
Harry out to bring House down
Three and easy for ton-up Hanagan
Wood carves out Galway verdict
More Of That in Wetherby frame
Big guns confirmed for Charlie Hall
Byron pencilled in for Far East
Newbury reverts to original title
Magician to stay in the US