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LONDON MARATHON MASS 2026

Siobhan Suyin Barrett

Bib: 36940•F

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

Course Elevation
6–172 ft
≈
×14story building
•▲ 503 ft climb · ▼ 613 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
10:15/mi
31:48
↑ 49↓ 1250.5%
10K· 6.21 mi
10:25/mi
1:04:08
↑ 50↓ 810.2%
15K· 9.32 mi
11:44/mi
1:40:34
↑ 44↓ 51
20K· 12.43 mi
11:16/mi
2:15:33
↑ 67↓ 400.2%
Half· 13.10 mi
12:03/mi
2:23:38
↓ 270.6%
25K· 15.53 mi
15:11/mi
3:00:35
↑ 50↓ 630.1%
30K· 18.64 mi
10:52/mi
3:34:19
↑ 69↓ 460.1%
35K· 21.75 mi
12:54/mi
4:14:22
↑ 87↓ 88
40K· 24.85 mi
11:00/mi
4:48:30
↑ 58↓ 750.1%
Finish· 26.22 mi
11:23/mi
5:04:01
↑ 14↓ 18

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.10 mi
Time2:23:38
Pace10:58 /mi
2nd Half
Distance13.12 mi
Time2:40:23
Pace12:14 /mi
📊Positive Split: 11.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:32:5731:4810:1531:48
10:15
-
10K
6.21 mi12:05:171:04:0810:2032:20
10:25
+0:10
15K
9.32 mi12:41:431:40:3410:4836:26
11:44
+1:19
20K
12.43 mi13:16:422:15:3310:5534:59
11:16
-0:28
Half
13.10 mi13:24:472:23:3810:588:05
12:03
+0:47
25K
15.53 mi14:01:443:00:3511:3836:57
15:11
+3:08
30K
18.64 mi14:35:283:34:1911:3033:44
10:52
-4:19
35K
21.75 mi15:15:314:14:2211:4240:03
12:54
+2:02
40K
24.85 mi15:49:394:48:3011:3734:08
11:00
-1:54
Finish
26.22 mi16:05:105:04:0111:3715:31
11:23
+0:23

Checkpoints & Pacing

📈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

10:15 /mi

Average Pace

11:36 /mi

Slowest Pace

15:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:04:08

21% of race

Time at Steady Pace

2:42:53

54% of race

Time at Slower Pace

1:17:00

25% of race

Average Pace: 11:36 /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

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:32:5731:4810:1531:48
10:15
#41254
10K
6.21 mi12:05:171:04:0810:2032:20
10:25
#40718
15K
9.32 mi12:41:431:40:3410:4836:26
11:44
#43091
20K
12.43 mi13:16:422:15:3310:5534:59
11:16
#43163
Half
13.10 mi13:24:472:23:3810:588:05
12:03
#43288
25K
15.53 mi14:01:443:00:3511:3836:57
15:11
#46626
30K
18.64 mi14:35:283:34:1911:3033:44
10:52
#43849
35K
21.75 mi15:15:314:14:2211:4240:03
12:54
#43264
40K
24.85 mi15:49:394:48:3011:3734:08
11:00
#41465
Finish
26.22 mi16:05:105:04:0111:3715:31
11:23
#41181
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi41254140931409346876(Top 78%)17438(Top 67%)17438(Top 118%)
10K6.21 mi3.10 mi40718+53613789+30413789+30440448(Top 68%)13704(Top 52%)13704(Top 93%)
15K9.32 mi3.11 mi43091-237315159-137015159-137046876(Top 78%)17438(Top 67%)17438(Top 118%)
20K12.43 mi3.11 mi43163-7215266-10715266-10743635(Top 73%)15840(Top 61%)15840(Top 107%)
Half13.10 mi0.67 mi43288-12515359-9315359-9345986(Top 77%)17470(Top 67%)17470(Top 118%)
25K15.53 mi2.43 mi46626-333817449-209017449-209054416(Top 91%)22618(Top 87%)22618(Top 153%)
30K18.64 mi3.11 mi43849+277715972+147715972+147731717(Top 53%)10597(Top 41%)10597(Top 72%)
35K21.75 mi3.11 mi43264+58515879+9315879+9340206(Top 67%)15455(Top 59%)15455(Top 105%)
40K24.85 mi3.10 mi41465+179915084+79515084+79527869(Top 47%)10047(Top 38%)10047(Top 68%)
Finish26.22 mi1.37 mi41181+28414983+10114983+10134893(Top 58%)13282(Top 51%)13282(Top 90%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 78%
×10story building
+49ft-125ft

Overall

46876

Females

17438

F18-39

17438

5K→10K

3.1 - 6.2 mi

Top 68%
×4story building
+50ft-81ft

Overall

40448

Females

13704

F18-39

13704

10K→15K

6.2 - 9.3 mi

Top 78%
×1story
+44ft-51ft

Overall

46876

Females

17438

F18-39

17438

15K→20K

9.3 - 12.4 mi

Top 73%
×3story building
+67ft-40ft

Overall

43635

Females

15840

F18-39

15840

20K→Half

12.4 - 13.1 mi

Top 77%
×2story building
+8ft-27ft

Overall

45986

Females

17470

F18-39

17470

Half→25K

13.1 - 15.5 mi

Top 91%
×2story building
+50ft-63ft

Overall

54416

Females

22618

F18-39

22618

25K→30K

15.5 - 18.6 mi

Top 53%
×2story building
+69ft-46ft

Overall

31717

Females

10597

F18-39

10597

30K→35K

18.6 - 21.8 mi

Top 67%
×2story building
+87ft-88ft

Overall

40206

Females

15455

F18-39

15455

35K→40K

21.8 - 24.9 mi

Top 47%
×3story building
+58ft-75ft

Overall

27869

Females

10047

F18-39

10047

40K→Finish

24.9 - 26.2 mi

Top 58%
×1story
+14ft-18ft

Overall

34893

Females

13282

F18-39

13282

Passing Analysis

Category:
Athletes Passed
6907*
Passed By
1247
Net Change
+73
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#41254
5K → 10K736*200+536#41254#40718
10K → 15K122200-2373#40718#43091
15K → 20K200200-72#43091#43163
20K → Half109200-125#43163#43288
Half → 25K48200-3338#43288#46626
25K → 30K27814+2777#46626#43849
30K → 35K785*200+585#43849#43264
35K → 40K1809*10+1799#43264#41465
40K → Finish317*33+284#41465#41181
TOTALS6907*1247+73

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

📊

Passing Visuals

Category:
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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

London Marathon Events

London Marathon Events

Mika Timing

Mika Timing