Shaelyn Van Zyl

Bib: 34424 F GB

0:00
0:00
/ mi
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Overall
#0 / 59786
Gender (Female)
#0 / 26115
Division (F18-39)
#0 / 14744
Race Day Weather
56°/46°F
overcast clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
17:39/mi
54:48
49125
10K· 6.21 mi
16:10/mi
1:45:00
5081
15K· 9.32 mi
14:40/mi
2:30:32
4451
20K· 12.43 mi
15:44/mi
3:19:24
6740
Half· 13.10 mi
16:31/mi
3:30:29
27
25K· 15.53 mi
15:55/mi
4:09:13
5063
30K· 18.64 mi
16:21/mi
5:00:00
6946
35K· 21.75 mi
17:09/mi
5:53:15
8788
40K· 24.85 mi
14:16/mi
6:37:34
5875
Finish· 26.22 mi
16:33/mi
7:00:07
1418
Course Elevation
503ft
Total climb
166ft
Range
6 to 172 ft
613ft
Total descent
About the height of the Statue of Liberty

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The Course

Half Splits

1st Half· via Half
3:30:2916:05 /mi⚖️ balanced
2nd Half
3:29:3815:59 /mi⚖️ balanced
Even split — consistent pacing between halves
AI Race Performance Report

Shaelyn's race, broken down like a coach

The full Race Story, performance analysis, segment & passing breakdowns, and where the race turned. Free to unlock — for anyone.

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Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
54:4817:393.11 mi54:48
17:39
-
10K
1:45:0016:543.10 mi50:12
16:10
-1:29
15K
2:30:3216:103.11 mi45:32
14:40
-1:30
20K
3:19:2416:033.11 mi48:52
15:44
+1:04
Half(13.10 mi)
3:30:2916:050.67 mi11:05
16:31
+0:47
25K
4:09:1316:032.43 mi38:44
15:55
-0:36
30K
5:00:0016:063.11 mi50:47
16:21
+0:26
35K
5:53:1516:153.11 mi53:15
17:09
+0:48
40K
6:37:3416:003.10 mi44:19
14:16
-2:53
Finish(26.22 mi)
7:00:0716:031.37 mi22:33
16:33
+2:17
Trend:
Faster pace
Steady pace
Slower pace
More below

See the rest of Shaelyn's race

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Checkpoints & Pacing

Pace Line

Fastest Pace

14:16 /mi

Average Pace

16:02 /mi

Slowest Pace

17:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

2:18:43

33% of race

Time at Steady Pace

2:53:21

41% of race

Time at Slower Pace

1:48:03

26% of race

Average Pace: 16:01 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi597172607326073569852407924079
10K3.10 mi59593+12425974+9925974+99592292570025700
15K3.11 mi59301+29225747+22725747+227569852407924079
20K3.11 mi59115+18625613+13425613+134576992463624636
Half(13.10 mi)0.67 mi59078+3725587+2625587+26580032496424964
25K2.43 mi58813+26525394+19325394+193557962346823468
30K3.11 mi58570+24325218+17625218+176559862369723697
35K3.11 mi58422+14825114+10425114+104563902413824138
40K3.10 mi57982+44024845+26924845+269495032050020500
Finish(26.22 mi)1.37 mi57966+1624843+224843+2571822466724667

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 95%
131 ft55 ft
49ft125ft
117 ft

Overall

56985

Females

24079

F18-39

24079

5K→10K

3.1 - 6.2 mi

Top 99%
55 ft24 ft
50ft81ft
45 ft

Overall

59229

Females

25700

F18-39

25700

10K→15K

6.2 - 9.3 mi

Top 95%
24 ft18 ft
44ft51ft
17 ft

Overall

56985

Females

24079

F18-39

24079

15K→20K

9.3 - 12.4 mi

Top 97%
18 ft45 ft
67ft40ft
38 ft

Overall

57699

Females

24636

F18-39

24636

20K→Half

12.4 - 13.1 mi

Top 97%
45 ft26 ft
8ft27ft
20 ft

Overall

58003

Females

24964

F18-39

24964

Half→25K

13.1 - 15.5 mi

Top 93%
25 ft12 ft
50ft63ft
20 ft

Overall

55796

Females

23468

F18-39

23468

25K→30K

15.5 - 18.6 mi

Top 94%
12 ft35 ft
69ft46ft
28 ft

Overall

55986

Females

23697

F18-39

23697

30K→35K

18.6 - 21.8 mi

Top 94%
35 ft34 ft
87ft88ft
23 ft

Overall

56390

Females

24138

F18-39

24138

35K→40K

21.8 - 24.9 mi

Top 83%
34 ft17 ft
58ft75ft
31 ft

Overall

49503

Females

20500

F18-39

20500

40K→Finish

24.9 - 26.2 mi

Top 96%
17 ft13 ft
14ft18ft
13 ft

Overall

57182

Females

24667

F18-39

24667

Passing Analysis

No position changes recorded for this athlete.

Public Race Data

London Marathon Events

London Marathon Events

Mika Timing

Mika Timing