Correct way to delay the start of a Task

I want to schedule a task to start in x ms and be able to cancel it before it starts (or just at the beginning of the task).

The first attempt would be something like

var _cancelationTokenSource = new CancellationTokenSource();

var token = _cancelationTokenSource.Token;
Task.Factory.StartNew(() =>
    {
        token.ThrowIfCancellationRequested();
        Thread.Sleep(100);
        token.ThrowIfCancellationRequested();
    }).ContinueWith(t =>
    {
        token.ThrowIfCancellationRequested();
        DoWork();
        token.ThrowIfCancellationRequested();
    }, token);

But I feel like there should be a better way, as this would use up a thread while in the sleep, during which it could be canceled.

What are my other options?