PULSAR TRAIL PRO 2

I like my Salomon Pulsar Trail for that purpose. They have a quite thick sole, so a lot of cushionning on easy trails at the expense of stability on technical trails.

What you may want is low/medium stack height, not necessarily “stability”. Try one around 30mm or lower at the heel. Saucony Peregrine, Altra Timp (zero drop), Salomon S/Lab Genesis, Salomon Pulsar, etc. Do you have a history of rolled ankles? I do and I and over pronate. I prefer being closer to the ground.

Salomon Pulsar - lower stack and foam is somewhat firm, but has pleasant energy return.

Prodigio Pro probably has the best blend of grip, cushion and fit (beware of sizing!). They are slightly overkill and expensive for 25km/700m though. You could try the Salomon Pulsar (i saw them for 85 chf on snowleader). Kjerag 2 is a bit more minimal and a lighter race option. A lot depends on the terrain, your foot shape, foot strike, if you want to them for hiking later, if you are planning to run ultras later, etc.

Lower stack = less ankle rolling and more connection with the terrain. Maybe try sth like Norvan Ld4, Kjerag 2, Salomon Pulsar if your distances are not too long. Prodigio Pro is a rare highish stack shoe that does well in tech terrain. It crushes all other shoes in this class. Speedgoats go to sleep at night wishing they could be this shoe.