TCS London Marathon 2026 logo
LONDON MARATHON MASS 2026

Briana Williams

Bib: 55418 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
10:00/mi
31:03
↑ 49↓ 125
10K· 6.21 mi
11:20/mi
1:06:13
↑ 50↓ 81
15K· 9.32 mi
10:48/mi
1:39:46
↑ 44↓ 51
20K· 12.43 mi
10:52/mi
2:13:30
↑ 67↓ 40
Half· 13.10 mi
11:11/mi
2:21:00
↓ 27
25K· 15.53 mi
11:25/mi
2:48:47
↑ 50↓ 63
30K· 18.64 mi
12:12/mi
3:26:39
↑ 69↓ 46
35K· 21.75 mi
12:39/mi
4:05:56
↑ 87↓ 88
40K· 24.85 mi
12:23/mi
4:44:23
↑ 58↓ 75
Finish· 26.22 mi
11:36/mi
5:00:11
↑ 14↓ 18
Course Elevation
503ft
Total climb
166ft
Range
6 to 172 ft
×14
613ft
Total descent

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The Course

Half Splits

1st Half· via Half
2:21:0010:46 /mi⚡ faster
2nd Half
2:39:1112:08 /mi+12.9%
Positive split — 12.9% slower in the second half
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Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
31:0310:003.11 mi31:03
10:00
-
10K
1:06:1310:403.10 mi35:10
11:20
+1:20
15K
1:39:4610:433.11 mi33:33
10:48
-0:32
20K
2:13:3010:453.11 mi33:44
10:52
+0:04
Half(13.10 mi)
2:21:0010:460.67 mi7:30
11:11
+0:19
25K
2:48:4710:522.43 mi27:47
11:25
+0:14
30K
3:26:3911:063.11 mi37:52
12:12
+0:47
35K
4:05:5611:193.11 mi39:17
12:39
+0:27
40K
4:44:2311:273.10 mi38:27
12:23
-0:16
Finish(26.22 mi)
5:00:1111:281.37 mi15:48
11:36
-0:47
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

10:00 /mi

Average Pace

11:27 /mi

Slowest Pace

12:39 /mi

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Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

1:38:20

33% of race

Time at Steady Pace

1:26:15

29% of race

Time at Slower Pace

1:55:36

39% of race

Average Pace: 11:27 /mi

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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. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi386041269812698399931352613526
10K3.10 mi43836-523215554-285615554-2856479631801318013
15K3.11 mi42345+149114724+83014724+830399931352613526
20K3.11 mi41737+60814470+25414470+254406781418014180
Half(13.10 mi)0.67 mi41623+11414437+3314437+33403891427514275
25K2.43 mi41077+54614280+15714280+157396841409314093
30K3.11 mi40793+28414321-4114321-41400941479214792
35K3.11 mi40465+32814390-6914390-69387951475514755
40K3.10 mi40243+22214437-4714437-47381171485114851
Finish(26.22 mi)1.37 mi40172+7114440-314440-3365471403814038

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 67%
×10
+49ft-125ft

Overall

39993

Females

13526

F18-39

13526

5K→10K

3.1 - 6.2 mi

Top 80%
×4
+50ft-81ft

Overall

47963

Females

18013

F18-39

18013

10K→15K

6.2 - 9.3 mi

Top 67%
+44ft-51ft

Overall

39993

Females

13526

F18-39

13526

15K→20K

9.3 - 12.4 mi

Top 68%
×3
+67ft-40ft

Overall

40678

Females

14180

F18-39

14180

20K→Half

12.4 - 13.1 mi

Top 68%
×2
+8ft-27ft

Overall

40389

Females

14275

F18-39

14275

Half→25K

13.1 - 15.5 mi

Top 66%
×2
+50ft-63ft

Overall

39684

Females

14093

F18-39

14093

25K→30K

15.5 - 18.6 mi

Top 67%
×2
+69ft-46ft

Overall

40094

Females

14792

F18-39

14792

30K→35K

18.6 - 21.8 mi

Top 65%
×2
+87ft-88ft

Overall

38795

Females

14755

F18-39

14755

35K→40K

21.8 - 24.9 mi

Top 64%
×3
+58ft-75ft

Overall

38117

Females

14851

F18-39

14851

40K→Finish

24.9 - 26.2 mi

Top 61%
+14ft-18ft

Overall

36547

Females

14038

F18-39

14038

Passing Analysis

Category:
▼Net Change
0
0 passed by0 passed
SegmentMovementRank
Start → 5K-#38604
5K → 10K
531886-5232
#38604 → #43836
10K → 15K
801571+1491
#43836 → #42345
15K → 20K
255863+608
#42345 → #41737
20K → Half
56170+114
#41737 → #41623
Half → 25K
229775+546
#41623 → #41077
25K → 30K
412696+284
#41077 → #40793
30K → 35K
363691+328
#40793 → #40465
35K → 40K
303525+222
#40465 → #40243
40K → Finish
129200+71
#40243 → #40172
TOTALS
71455577-1568
#38604 → #40172

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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Public Race Data

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Mika Timing