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LONDON MARATHON MASS 2026

Kai Chee Siu

Bib: 52012•M

Masters
TCS London Marathon 2026 logo
0:00
0:00
/ mi
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Overall
#0 / 59786
Top 13%
Gender (Male)
#0 / 33594
Top 19%
Masters (Masters Men)
#0 / 16876
Top 17%
Age Group (M40-44)
#0 / 4826
Top 23%
Race Day Weather
56°/46°F
overcast clouds

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
23:19
Rank: #9056
Start → 5K
23:19 | 7:31/mi
10K· 6.21 mi
46:54
Rank: #9006 (+50)
5K → 10K
23:35 | 7:36/mi
15K· 9.32 mi
1:10:53
Rank: #8849 (+157)
10K → 15K
23:59 | 7:44/mi
20K· 12.43 mi
1:33:50
Rank: #8488 (+361)
15K → 20K
22:57 | 7:24/mi
Half· 13.10 mi
1:38:59
Rank: #8464 (+24)
20K → Half
5:09 | 7:41/mi
25K· 15.53 mi
1:57:17
Rank: #8256 (+208)
Half → 25K
18:18 | 7:31/mi
30K· 18.64 mi
2:21:24
Rank: #8034 (+222)
25K → 30K
24:07 | 7:46/mi
35K· 21.75 mi
2:46:12
Rank: #7818 (+216)
30K → 35K
24:48 | 7:59/mi
40K· 24.85 mi
3:11:34
Rank: #7691 (+127)
35K → 40K
25:22 | 8:10/mi
Finish· 26.22 mi
3:24:14
Rank: #8047 (-356)
40K → Finish
12:40 | 9:18/mi
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Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.10 mi
Time1:38:59
Pace7:34 /mi
2nd Half
Distance13.12 mi
Time1:45:15
Pace8:02 /mi
📊Positive Split: 6.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:15:4023:197:3123:19
7:31
-
10K
6.21 mi10:39:1546:547:3323:35
7:36
+0:05
15K
9.32 mi11:03:141:10:537:3723:59
7:44
+0:08
20K
12.43 mi11:26:111:33:507:3422:57
7:24
-0:20
Half
13.10 mi11:31:201:38:597:345:09
7:41
+0:17
25K
15.53 mi11:49:381:57:177:3318:18
7:31
-0:10
30K
18.64 mi12:13:452:21:247:3624:07
7:46
+0:15
35K
21.75 mi12:38:332:46:127:3924:48
7:59
+0:13
40K
24.85 mi13:03:553:11:347:4325:22
8:10
+0:11
Finish
26.22 mi13:16:353:24:147:4812:40
9:18
+1:08

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

7:24 /mi

Average Pace

7:48 /mi

Slowest Pace

9:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

22:57

11% of race

Time at Steady Pace

2:23:15

70% of race

Time at Slower Pace

38:02

19% of race

Average Pace: 7:47 /mi

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Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

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

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:15:4023:197:3123:19
7:31
#9056
10K
6.21 mi10:39:1546:547:3323:35
7:36
#9006
15K
9.32 mi11:03:141:10:537:3723:59
7:44
#8849
20K
12.43 mi11:26:111:33:507:3422:57
7:24
#8488
Half
13.10 mi11:31:201:38:597:345:09
7:41
#8464
25K
15.53 mi11:49:381:57:177:3318:18
7:31
#8256
30K
18.64 mi12:13:452:21:247:3624:07
7:46
#8034
35K
21.75 mi12:38:332:46:127:3924:48
7:59
#7818
40K
24.85 mi13:03:553:11:347:4325:22
8:10
#7691
Finish
26.22 mi13:16:353:24:147:4812:40
9:18
#8047
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi9056743974398720(Top 15%)7221(Top 21%)7221(Top 150%)
10K6.21 mi3.10 mi9006+507403+367403+369017(Top 15%)7420(Top 22%)7420(Top 154%)
15K9.32 mi3.11 mi8849+1577293+1107293+1108720(Top 15%)7221(Top 21%)7221(Top 150%)
20K12.43 mi3.11 mi8488+3617044+2497044+2497553(Top 13%)6395(Top 19%)6395(Top 133%)
Half13.10 mi0.67 mi8464+247039+57039+58157(Top 14%)6815(Top 20%)6815(Top 141%)
25K15.53 mi2.43 mi8256+2086884+1556884+1557499(Top 13%)6308(Top 19%)6308(Top 131%)
30K18.64 mi3.11 mi8034+2226702+1826702+1827517(Top 13%)6221(Top 19%)6221(Top 129%)
35K21.75 mi3.11 mi7818+2166492+2106492+2107461(Top 12%)5972(Top 18%)5972(Top 124%)
40K24.85 mi3.10 mi7691+1276315+1776315+1777965(Top 13%)6119(Top 18%)6119(Top 127%)
Finish26.22 mi1.37 mi8047-3566525-2106525-21017253(Top 29%)11698(Top 35%)11698(Top 242%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 15%
×10stories
+49ft-125ft

Overall

8720

Males

7221

M40-44

7221

5K→10K

3.1 - 6.2 mi

Top 15%
×4stories
+50ft-81ft

Overall

9017

Males

7420

M40-44

7420

10K→15K

6.2 - 9.3 mi

Top 15%
×1story
+44ft-51ft

Overall

8720

Males

7221

M40-44

7221

15K→20K

9.3 - 12.4 mi

Top 13%
×3stories
+67ft-40ft

Overall

7553

Males

6395

M40-44

6395

20K→Half

12.4 - 13.1 mi

Top 14%
×2stories
+8ft-27ft

Overall

8157

Males

6815

M40-44

6815

Half→25K

13.1 - 15.5 mi

Top 13%
×2stories
+50ft-63ft

Overall

7499

Males

6308

M40-44

6308

25K→30K

15.5 - 18.6 mi

Top 13%
×2stories
+69ft-46ft

Overall

7517

Males

6221

M40-44

6221

30K→35K

18.6 - 21.8 mi

Top 12%
×2stories
+87ft-88ft

Overall

7461

Males

5972

M40-44

5972

35K→40K

21.8 - 24.9 mi

Top 13%
×3stories
+58ft-75ft

Overall

7965

Males

6119

M40-44

6119

40K→Finish

24.9 - 26.2 mi

Top 29%
×1story
+14ft-18ft

Overall

17253

Males

11698

M40-44

11698

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
2153*
Passed By
961
Net Change
+1009
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9056
5K → 10K250*200+50#9056#9006
10K → 15K258*101+157#9006#8849
15K → 20K374*13+361#8849#8488
20K → Half5329+24#8488#8464
Half → 25K229*21+208#8464#8256
25K → 30K310*88+222#8256#8034
30K → 35K357*141+216#8034#7818
35K → 40K295*168+127#7818#7691
40K → Finish27200-356#7691#8047
TOTALS2153*961+1009

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Activity Data

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Public Race Data

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Mika Timing

Mika Timing