As a regular hiker, from personal experience, moving from a 10 lb pack to a 20 lb pack (and heavier) starts to slow you down (and almost certainly if you are carrying the weight in your arms rather than on your back). If you are measuring purely by minutes, the decreased distance and increased weight tend to balance themselves out.
One option might be to use the walking tracker at www.caloriesperhour.com/index_burn.php
where you can add 34 lbs and add the time and distance travelled, then enter the calories manually into Spark.
The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man.
| current weight: 178.0