Planner inputs: Performance anchors

These are advanced baseline anchors.

They matter, but most users should not start by hand-tuning them.

The safest default approach

On your first pass:

• leave E0 on its default
• leave hrS0 on its default
• leave hrAeT on its default unless you know yours better
• only change S0 if the default anchor speed clearly misrepresents you

S0

S0 is your baseline flat-ground reference speed.

Choose it as a stable baseline anchor, not as your proudest hiking speed.

Good choice:

• a believable controlled flat-ground pace you can sustain economically

Poor choice:

• a speed chosen because it sounds impressive

E0

E0 is your baseline movement-cost anchor.

For most users, the default is the right starting point.

Only override it if:

• you have a reason to distrust the default
• you understand why the override better represents you

hrS0

hrS0 is the heart rate associated with your baseline pace anchor.

Most users should leave it on the derived default unless they have a better known value.

hrAeT

hrAeT is the upper anchor for how the planner interprets your sustainable effort range.

Use the default age-based estimate as a starting point.

Manual override makes sense when:

• you know your aerobic-threshold value from better evidence
• the default is clearly not representative of your physiology

A good warning sign

If you find yourself editing all four of these fields before you have even split the route into days, you are probably optimizing too early.