Racing at Plumpton on Monday and Taunton on Tuesday has been abandoned as the tracks are waterlogged.
There are also problems at Leicester, where there will be an inspection at 10am on Monday ahead of Wednesday's jumps meeting.
Heavy rain at Plumpton prompted an 8am inspection on Sunday morning, after which officials were left with little option. Taunton went the same way during the same morning.
Plumpton clerk of the course Mark Cornford said: "We had 22 millimetres of rain overnight - we were told we could get eight or 12 millimetres. If we'd had four or five we could have given it another 24 hours and seen where we are, but 22 millimetres definitely wasn't on the horizon.
"I don't feel there is enough time for enough of an improvement, it's totally unraceable at the moment. There's still a chance of a shower this evening, and tomorrow afternoon the rain comes back. There's water lying in lots of places that it wasn't yesterday."
Heavy rain after several inches of snow had thawed gave Taunton officials no alternative but to call off their fixture.
"We had about three to five inches of snow which melted on Friday and then we had an inch of rain on Friday night and a further inch of rain last night," said clerk of the course Michael Trickey.
"That was on already heavy ground and there was no way it was sustainable. There is more rain forecast on Monday and Tuesday, so I'm afraid we've had to come to the sad conclusion."
The rapid thaw has caused fresh problems for Leicester. Five inches of snow on Saturday was quickly followed by milder weather and rain, and has resulted in waterlogging.
Clerk of the course Jimmy Stevenson said: "I'm not surprised - I knew this was inevitable. We had five inches of snow on the course on Saturday. That's all gone with the rain, and we are left with a bit of water running round. We've got a dry 24 hours now, so we will have a review in the morning."
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