오름길 - 트레일러닝 고도·컷오프 계산

The real question in a trail running competition is not "how many kilometers" but "how much you climb" and "whether you make the cut-off."

Even someone who can run 10km on flat terrain in 50 minutes will take two hours if a 1,000m climb is added. Therefore, on uphill sections, the elevation gained is measured rather than the distance. You measure the incline using your phone's barometer and work backwards from that speed to calculate when you will arrive at each point of the race and the margin remaining before the cut-off.

■ Measuring elevation gain with a barometer — Without location permissions

When you press "Start Climbing," the phone's barometric pressure sensor adds only the elevation gained. Since it does not use GPS, location permissions are not required, and it consumes less battery power. Because atmospheric pressure fluctuates due to weather conditions, movement of more than 3 meters counts as one step. Whether you are currently on an uphill or downhill section is displayed in a real-time elevation cross-section. For phones without a barometer, or records measured by a watch or other apps, you must manually transcribe the data.

■ Accumulated Height Becomes a Mountain — From Namsan to Everest

Every time you record the height you climb, the mountain path on the first screen is colored. If your cumulative height exceeds 262m, it becomes Namsan; if it exceeds 1,947m, it becomes Hallasan; and if it exceeds 3,776m, it becomes Mount Fuji — a gold flag is planted at the mountain you have climbed, and the next mountain stands ahead. Levels, consecutive weeks, weekly goals, and mountain badges accumulate together.

■ Backtracking Cutoffs — Estimated Arrivals and Time Limits at Each Point

If you input the distance, climb, time limit, and cutoff points from the race rules, the system estimates the arrival time at each point based on your flat pace and your climb speed (recent session average). Point flags are planted on the cross-section of the course, and points with a time limit of less than 30 minutes turn into a warning color. You can see immediately where things might be tight, such as "CP2 Ridge — Time Limit 1:12."

** ■ Effort Distance — Converting climbs into distance

Race difficulty is evaluated as a single distance by counting every 100m of ascent as 1km of flat terrain. A 50km or +2,600m race is considered an effort distance of 76km. This figure serves as the standard when comparing to other races.

■ Supply Schedule — When to replenish gel, water, and salt

A schedule is released for gel every 45 minutes and for water and salt every hour, based on your estimated finish time. Refer to this schedule the night before the race to count the number of gels needed.

■ Essential Equipment Checklist

Headlamp, waterproof jacket, emergency blanket, whistle, 1L water, personal cup — Check and pack the essential equipment commonly required by trail races. Your checked status remains on the device.

■ Completed within the device

There is no login or registration required. Records are stored only within this device and do not record your location.

※ This app is for unofficial reference only and is not affiliated with any race organizers. Estimates are approximate; please follow the race guidelines for actual essential equipment and cutoffs. Barometer measurements may be subject to error due to weather changes.