Climb
public struct Climb : Hashable, Sendable
Describes a climb section within a track.

The distance in meters from the climbs start to the
GPXTrack
s origin.Declaration
Swift
public var start: Double

The distance of the end climb in meters from the
GPXTrack
s origin.Declaration
Swift
public var end: Double

The elevation in meters of the climbs bottom.
Declaration
Swift
public var bottom: Double

The elevation in meters of the climbs top.
Declaration
Swift
public var top: Double

The average grade (elevation over distance) of the climb in percent in the range {0,1}.
Declaration
Swift
public var grade: Double

The maximum grade (elevation over distance) of the climb in percent in the range {0,1}. If the climb was constructed from multiple adjacent climbs it has their maximum grade, otherwise
maxGrade
is equal tograde
.Declaration
Swift
public var maxGrade: Double

The FIETS score of the climb
One way to determine the difficulty of a climb is to use the FIETS formula to calculate a numeric value for the climb. This formula was developed by the Dutch cycling magazine Fiets. The formula is shown below:
FIETS Score = (H * H / D * 10) + (T  1000) / 1000
Where:
 H is the height of the climb (meters),
 D is the climb length or distance (meters)
 T is the altitude at the top (meters). The second term in the formula is only added when it is positive, that is, for climbs whose top is above 1000m. NOTE In GPXKit, the “(T  1000)/1000” term of the FIETS formula is not added to the climb segments, so climbs can be joined together.
Declaration
Swift
public var score: Double

Initializes a
Climb
.Declaration
Swift
public init(start: Double, end: Double, bottom: Double, top: Double, totalElevation: Double, grade: Double, maxGrade: Double, score: Double)
Parameters
start
The distance in meters from the
GPXTrack
s start.end
The distance in meters from the
GOXTracks
s end.bottom
The elevation in meters at the start of the climb.
top
The elevation in meters at the top of the climb.
totalElevation
The total elevation in meters of the climb (top  bottom in most cases).
grade
The grade (elevation over distance) of the climb in percent in the range {0,1}.
maxGrade
The maximum grade (elevation over distance) of the climb in percent in the range {0,1}.
score
The FIETS Score of the climb.

Initializes a
Climb
.Declaration
Swift
public init(start: Double, end: Double, bottom: Double, top: Double)
Parameters
start
The distance in meters from the
GPXTrack
s start.end
The distance in meters from the
GOXTracks
s end.bottom
The elevation in meters at the start of the climb.
top
The elevation in meters at the top of the climb.

The length in meters of the climb.
Declaration
Swift
var distance: Double { get }