Feature Request: Add Pace/Speed Graphs to GPS Activities

Feature Request: Add Pace/Speed Graphs to GPS Activities

Problem:

When I review a GPS‑tracked activity (walking, running, cycling), I can see my route, distance, average pace, and heart rate—but I **can’t see how my pace or cadence changed over time** within the session.

Right now, I only get a static summary (e.g., total distance, average pace), which isn’t enough to really analyze or improve.

Proposed Solution:

In the Activity Details screen for GPS activities, add rime‑series graphs (same as we have for HR) for:

  1. Pace / Speed vs Time

  2. Cadence vs Time (optional)

These would live alongside (or in the same section as) the existing Heart Rate vs Time graph.

Some Behavior & UI ideas:

  • For Running / Walking: show pace (min/km or min/mi) over time

  • For Cycling: show speed (km/h or mph) over time

Could be cadence as well but totally optional as it is more complicated I suppose.

Overlay options (ideal):

  • Allow toggling overlays depending on activiti time

    • HR + Pace
    • HR + Speed
  • Or simple checkboxes under the graph to show/hide each series.