Well, it's already starting: https://athletistic.com/other-sports/182854.html

Several other European countries would be likely to join the boycott

So tell me, how can Ukraine or the West unilaterally declare peace when Russia doesn't want peace and has annexed 5 sizeable regions of Ukraine as its own?

It wants to rebuild the Russian empire and Ukraine is one of many countries in its path of military annihilation towards that. The only way towards peace is physically stopping Russia.

Western leaders have talked to Putin tens of times about 1) not starting the war 2) ending it. Putin never gave a fuck. He wanted war and if he is rewarded with land then he will come for more soon enough.

West doesnt't want this war. Ukraine doesn't want this war. Only Russia does. When the invaders walk back over the border into Russia the war is over. Russia could do it on a whim if they wanted to. But Ukraine can do it only with weapons. Those weapons are needed for peace.

Considering the war may last for years that training should be (and to some extent is) underway

Russian numberplates - makes sense