Boston is considerably beefier. Longer races I use Boston.

Adios. Boston for easy runs or off road. Takumi Ren for faster stuff.

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Eric Reid AeroFit | Instagram Portfolio
Aerodynamic Retul Bike Fitting

“You are experiencing the criminal coverup of a foreign backed fascist hostile takeover of a mafia shakedown of an authoritarian religious slow motion coup. Persuade people to vote for Democracy.”

You’ve got a good combination there. Base everything on your feel in the shoes. The general thinking is the longer the distance the more shoe you want under you feet. Let’s just say it’s a marathon. You are planning for how you want to feel the last 10 miles. If you think the adios is enough and you won’t feel beat up then the adios is your shoe. If not than it’s probably the Boston. Triathlon is the same scenario only the window for feeling really good is smaller. You’re going to feel beat up so choose your shoe based on that feeling.

Both shoes are simply beautifully constructed fun shoes to run in.

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Dave Jewell
Free Run Speed

Thanks for the advice here!