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LONDON MARATHON MASS 2026

Tom Seddon

Bib: 81925•M

Masters
TCS London Marathon 2026 logo
0:00
0:00
/ mi
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Overall
#0 / 59786
Top 44%
Gender (Male)
#0 / 33594
Masters (Masters Men)
#0 / 16876
Top 50%
Age Group (M45-49)
#0 / 4167
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
28:58
3.11 mi
Rank: #31277
Start → 5K
28:58 | 9:20/mi
10K
58:13
6.21 mi
Rank: #30816 (+461)
5K → 10K
29:15 | 9:25/mi
15K
1:28:36
9.32 mi
Rank: #30753 (+63)
10K → 15K
30:23 | 9:47/mi
20K
1:57:41
12.43 mi
Rank: #29800 (+953)
15K → 20K
29:05 | 9:22/mi
Half
2:04:19
13.10 mi
Rank: #29742 (+58)
20K → Half
6:38 | 9:54/mi
25K
2:28:39
15.53 mi
Rank: #29472 (+270)
Half → 25K
24:20 | 10:00/mi
30K
3:00:25
18.64 mi
Rank: #28668 (+804)
25K → 30K
31:46 | 10:14/mi
35K
3:33:01
21.75 mi
Rank: #27715 (+953)
30K → 35K
32:36 | 10:30/mi
40K
4:05:08
24.85 mi
Rank: #26763 (+952)
35K → 40K
32:07 | 10:21/mi
Finish
4:18:36
26.22 mi
Rank: #26389 (+374)
40K → Finish
13:28 | 9:53/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
Time2:04:19
Pace9:30 /mi
2nd Half
Distance13.12 mi
Time2:14:17
Pace10:15 /mi
📊Positive Split: 8.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:0028:589:2028:58
9:20
-
10K
6.21 mi11:18:1558:139:2329:15
9:25
+0:05
15K
9.32 mi11:48:381:28:369:3130:23
9:47
+0:22
20K
12.43 mi12:17:431:57:419:2929:05
9:22
-0:25
Half
13.10 mi12:24:212:04:199:306:38
9:54
+0:32
25K
15.53 mi12:48:412:28:399:3524:20
10:00
+0:06
30K
18.64 mi13:20:273:00:259:4131:46
10:14
+0:14
35K
21.75 mi13:53:033:33:019:4832:36
10:30
+0:16
40K
24.85 mi14:25:104:05:089:5232:07
10:21
-0:09
Finish
26.22 mi14:38:384:18:369:5313:28
9:53
-0:28

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

9:20 /mi

Average Pace

9:52 /mi

Slowest Pace

10:30 /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

3:13:53

75% of race

Time at Steady Pace

1:04:43

25% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:52 /mi

Loading chart...
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 mi10:49:0028:589:2028:58
9:20
#31277
10K
6.21 mi11:18:1558:139:2329:15
9:25
#30816
15K
9.32 mi11:48:381:28:369:3130:23
9:47
#30753
20K
12.43 mi12:17:431:57:419:2929:05
9:22
#29800
Half
13.10 mi12:24:212:04:199:306:38
9:54
#29742
25K
15.53 mi12:48:412:28:399:3524:20
10:00
#29472
30K
18.64 mi13:20:273:00:259:4131:46
10:14
#28668
35K
21.75 mi13:53:033:33:019:4832:36
10:30
#27715
40K
24.85 mi14:25:104:05:089:5232:07
10:21
#26763
Finish
26.22 mi14:38:384:18:369:5313:28
9:53
#26389
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi31277218982189830729(Top 51%)21569(Top 64%)21569(Top 518%)
10K6.21 mi3.10 mi30816+46121627+27121627+27130444(Top 51%)21391(Top 64%)21391(Top 513%)
15K9.32 mi3.11 mi30753+6321593+3421593+3430729(Top 51%)21569(Top 64%)21569(Top 518%)
20K12.43 mi3.11 mi29800+95320991+60220991+60227812(Top 47%)19754(Top 59%)19754(Top 474%)
Half13.10 mi0.67 mi29742+5820931+6020931+6029448(Top 49%)20568(Top 61%)20568(Top 494%)
25K15.53 mi2.43 mi29472+27020687+24420687+24429270(Top 49%)20227(Top 60%)20227(Top 485%)
30K18.64 mi3.11 mi28668+80420055+63220055+63227123(Top 45%)18632(Top 55%)18632(Top 447%)
35K21.75 mi3.11 mi27715+95319225+83019225+83025020(Top 42%)16797(Top 50%)16797(Top 403%)
40K24.85 mi3.10 mi26763+95218439+78618439+78623245(Top 39%)15291(Top 46%)15291(Top 367%)
Finish26.22 mi1.37 mi26389+37418156+28318156+28321985(Top 37%)14563(Top 43%)14563(Top 349%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 51%
×10
+49ft-125ft

Overall

30729

Males

21569

M45-49

21569

5K→10K

3.1 - 6.2 mi

Top 51%
×4
+50ft-81ft

Overall

30444

Males

21391

M45-49

21391

10K→15K

6.2 - 9.3 mi

Top 51%
×1
+44ft-51ft

Overall

30729

Males

21569

M45-49

21569

15K→20K

9.3 - 12.4 mi

Top 47%
×3
+67ft-40ft

Overall

27812

Males

19754

M45-49

19754

20K→Half

12.4 - 13.1 mi

Top 49%
×2
+8ft-27ft

Overall

29448

Males

20568

M45-49

20568

Half→25K

13.1 - 15.5 mi

Top 49%
×2
+50ft-63ft

Overall

29270

Males

20227

M45-49

20227

25K→30K

15.5 - 18.6 mi

Top 45%
×2
+69ft-46ft

Overall

27123

Males

18632

M45-49

18632

30K→35K

18.6 - 21.8 mi

Top 42%
×2
+87ft-88ft

Overall

25020

Males

16797

M45-49

16797

35K→40K

21.8 - 24.9 mi

Top 39%
×3
+58ft-75ft

Overall

23245

Males

15291

M45-49

15291

40K→Finish

24.9 - 26.2 mi

Top 37%
×1
+14ft-18ft

Overall

21985

Males

14563

M45-49

14563

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
6162*
Passed By
1274
Net Change
+4888
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#31277
5K → 10K661*200+461#31277#30816
10K → 15K263*200+63#30816#30753
15K → 20K1020*67+953#30753#29800
20K → Half13779+58#29800#29742
Half → 25K470*200+270#29742#29472
25K → 30K1004*200+804#29472#28668
30K → 35K1141*188+953#28668#27715
35K → 40K1061*109+952#27715#26763
40K → Finish405*31+374#26763#26389
TOTALS6162*1274+4888

* 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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