Galadriel55, I would have to go with what you're saying. You can't really get down to the science and math of it all because there really isn't any. Those who would even attempt to sail there to calculate the distance, the Valar would deal with them if they are not allowed to sail to Valinor, they probably wouldn't even make it past the horizon or the "curtain of rain". It's a spiritual journey that only those the Valar allow to sail there can make, there's no real distance involved, time doesn't matter anymore. There's just no technicalities involved with taking a spiritual journey. 
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~|And all will turn, to silver glass. A light on the water, Grey ships pass, Into the West. |~ "Few now remember them...yet still some go wandering, sons of forgotten kings walking in loneliness, guarding from evil things folks that are heedless."
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