TCS London Marathon 2026 logo
LONDON MARATHON MASS 2026

Jon Jansen-Alder

Bib: 71930 M GB

0:00
0:00
/ mi
Masters
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Overall
#0 / 59786
Gender (Male)
#0 / 33594
Masters (Masters Men)
#0 / 16876
Division (M50-54)
#0 / 3474
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
12:52/mi
39:56
↑ 49↓ 125
10K· 6.21 mi
13:22/mi
1:21:25
↑ 50↓ 81
15K· 9.32 mi
14:25/mi
2:06:11
↑ 44↓ 51
20K· 12.43 mi
15:02/mi
2:52:52
↑ 67↓ 40
Half· 13.10 mi
15:44/mi
3:03:25
↓ 27
25K· 15.53 mi
16:28/mi
3:43:31
↑ 50↓ 63
30K· 18.64 mi
15:39/mi
4:32:07
↑ 69↓ 46
35K· 21.75 mi
16:20/mi
5:22:51
↑ 87↓ 88
40K· 24.85 mi
15:50/mi
6:12:02
↑ 58↓ 75
Finish· 26.22 mi
13:36/mi
6:30:34
↑ 14↓ 18
Course Elevation
503ft
Total climb
613ft
Total descent
166ft
Range
6 to 172 ft
≈
×14story building

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The Course

Half Splits

1st Half· via Half
3:03:2514:01 /mi⚡ faster
2nd Half
3:27:0915:48 /mi+12.9%
Positive split — 12.9% slower in the second half
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Your race, unpacked

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Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
39:5612:523.11 mi39:56
12:52
-
10K
1:21:2513:073.10 mi41:29
13:22
+0:30
15K
2:06:1113:333.11 mi44:46
14:25
+1:03
20K
2:52:5213:553.11 mi46:41
15:02
+0:37
Half(13.10 mi)
3:03:2514:010.67 mi10:33
15:44
+0:42
25K
3:43:3114:242.43 mi40:06
16:28
+0:44
30K
4:32:0714:363.11 mi48:36
15:39
-0:49
35K
5:22:5114:513.11 mi50:44
16:20
+0:41
40K
6:12:0214:593.10 mi49:11
15:50
-0:30
Finish(26.22 mi)
6:30:3414:551.37 mi18:32
13:36
-2:14
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

12:52 /mi

Average Pace

14:54 /mi

Slowest Pace

16:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

3:11:24

49% of race

Time at Steady Pace

1:48:20

28% of race

Time at Slower Pace

1:30:50

23% of race

Average Pace: 14:54 /mi

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

Heatmap

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

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi568153285232852565643271232712
10K3.10 mi56548+26732764+8832764+88562123261732617
15K3.11 mi56587-3932757+732757+7565643271232712
20K3.11 mi56725-13832769-1232769-12568293272432724
Half(13.10 mi)0.67 mi56771-4632773-432773-4571003265332653
25K2.43 mi56824-5332775-232775-2566173256832568
30K3.11 mi56536+28832652+12332652+123544803160231602
35K3.11 mi56432+10432565+8732565+87547583147631476
40K3.10 mi56372+6032516+4932516+49549573149831498
Finish(26.22 mi)1.37 mi56185+18732440+7632440+76494972894428944

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 95%
×10story building
+49ft-125ft

Overall

56564

Males

32712

M50-54

32712

5K→10K

3.1 - 6.2 mi

Top 94%
×4story building
+50ft-81ft

Overall

56212

Males

32617

M50-54

32617

10K→15K

6.2 - 9.3 mi

Top 95%
×1story
+44ft-51ft

Overall

56564

Males

32712

M50-54

32712

15K→20K

9.3 - 12.4 mi

Top 95%
×3story building
+67ft-40ft

Overall

56829

Males

32724

M50-54

32724

20K→Half

12.4 - 13.1 mi

Top 96%
×2story building
+8ft-27ft

Overall

57100

Males

32653

M50-54

32653

Half→25K

13.1 - 15.5 mi

Top 95%
×2story building
+50ft-63ft

Overall

56617

Males

32568

M50-54

32568

25K→30K

15.5 - 18.6 mi

Top 91%
×2story building
+69ft-46ft

Overall

54480

Males

31602

M50-54

31602

30K→35K

18.6 - 21.8 mi

Top 92%
×2story building
+87ft-88ft

Overall

54758

Males

31476

M50-54

31476

35K→40K

21.8 - 24.9 mi

Top 92%
×3story building
+58ft-75ft

Overall

54957

Males

31498

M50-54

31498

40K→Finish

24.9 - 26.2 mi

Top 83%
×1story
+14ft-18ft

Overall

49497

Males

28944

M50-54

28944

Passing Analysis

Category:
▲Net Change
+0
0 passed by0 passed
SegmentMovementRank
Start → 5K-#56815
5K → 10K
293560+267
#56815 → #56548
10K → 15K
329290-39
#56548 → #56587
15K → 20K
361223-138
#56587 → #56725
20K → Half
10458-46
#56725 → #56771
Half → 25K
274221-53
#56771 → #56824
25K → 30K
82370+288
#56824 → #56536
30K → 35K
122226+104
#56536 → #56432
35K → 40K
111171+60
#56432 → #56372
40K → Finish
12199+187
#56372 → #56185
TOTALS
16882318+630
#56815 → #56185

Passing Visualized

Category:
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Passing Circle

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Position Flow

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Race Lanes

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Mika Timing