Methinx it's at 100,000km mark...which yeah, is about the 60,000mi mark
Interestingly enough, it's slightly different for the 20Valve guys, cuz I keep seeing stuff here about cam timing being off and car won't start etc. Unlike the ST 20V, the BT 20V is NOT a non-inteference engine so timing needs to be spot on before you try to turn it over.
There are two cam timing marks to be followed. One on each cam that lines up with the marks on the valve cover, and another set on each cam that are supposed to line up with each other once the top marks like up with the cover (fig.1) while down below, the mark on the timing belt gear lines up with the mark on the oil unit body (fig.2).
fig. 1
fig.2