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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Brittany Shelby

Bib: 28858 β€’F β€’Age: N/A

FL

Boston Marathon logo
0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Gender (Female)
#0 / 12578
Masters (Masters Women)
#0 / 6862
Age Group (F40-44)
#0 / 1737
Race Day Weather
51Β°/41Β°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
31:33
3.11 mi
Rank: #26378
Start β†’ 5K
31:33 | 10:10/mi
10K
1:02:47
6.21 mi
Rank: #26171 (+207)
5K β†’ 10K
31:14 | 10:04/mi
15K
1:34:09
9.32 mi
Rank: #26068 (+103)
10K β†’ 15K
31:22 | 10:06/mi
20K
2:05:34
12.43 mi
Rank: #25868 (+200)
15K β†’ 20K
31:25 | 10:07/mi
HALF
2:12:23
13.11 mi
Rank: #25852 (+16)
20K β†’ HALF
6:49 | 10:01/mi
25K
2:37:16
15.53 mi
Rank: #25685 (+167)
HALF β†’ 25K
24:53 | 10:16/mi
30K
3:09:23
18.64 mi
Rank: #25352 (+333)
25K β†’ 30K
32:07 | 10:21/mi
20M
3:23:33
20.00 mi
Rank: #25212 (+140)
30K β†’ 20M
14:10 | 10:26/mi
21M
3:34:19
21.00 mi
Rank: #25088 (+124)
20M β†’ 21M
10:46 | 10:46/mi
35K
3:41:53
21.75 mi
Rank: #25017 (+71)
21M β†’ 35K
7:34 | 10:07/mi
23M
3:54:59
23.00 mi
Rank: #24916 (+101)
35K β†’ 23M
13:06 | 10:29/mi
24M
4:05:23
24.00 mi
Rank: #24881 (+35)
23M β†’ 24M
10:24 | 10:24/mi
40K
4:14:56
24.85 mi
Rank: #24878 (+3)
24M β†’ 40K
9:33 | 11:11/mi
25.2M
4:19:08
25.20 mi
Rank: #24868 (+10)
40K β†’ 25.2M
4:12 | 12:11/mi
FINISH
4:30:29
26.22 mi
Rank: #24924 (-56)
25.2M β†’ FINISH
11:21 | 11:09/mi
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Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time2:12:23
Pace10:06 /mi
2nd Half
Distance13.11 mi
Time2:18:06
Pace10:33 /mi
πŸ“ŠPositive Split: 4.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:56:4631:3310:1031:33
10:10
-
10K
6.21 mi12:28:001:02:4710:0731:14
10:04
-0:06
15K
9.32 mi12:59:221:34:0910:0731:22
10:06
+0:02
20K
12.43 mi13:30:472:05:3410:0731:25
10:07
+0:01
HALF
13.11 mi13:37:362:12:2310:066:49
10:01
-0:06
25K
15.53 mi14:02:292:37:1610:0824:53
10:16
+0:15
30K
18.64 mi14:34:363:09:2310:1032:07
10:21
+0:05
20M
20.00 mi14:48:463:23:3310:1114:10
10:26
+0:05
21M
21.00 mi14:59:323:34:1910:1310:46
10:46
+0:20
35K
21.75 mi15:07:063:41:5310:137:34
10:07
-0:39
23M
23.00 mi15:20:123:54:5910:1413:06
10:29
+0:22
24M
24.00 mi15:30:364:05:2310:1410:24
10:24
-0:05
40K
24.85 mi15:40:094:14:5610:169:33
11:11
+0:47
25.2M
25.20 mi15:44:214:19:0810:174:12
12:11
+1:00
FINISH
26.22 mi15:55:424:30:2910:2011:21
11:09
-1:02

Checkpoint Splits Visualizations

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

πŸ“ˆPace 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

10:01 /mi

Average Pace

10:19 /mi

Slowest Pace

12:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

πŸ“ŠSegments

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

6:49

3% of race

Time at Steady Pace

3:47:48

84% of race

Time at Slower Pace

35:52

13% of race

Average Pace: 10:19 /mi

Loading chart...
Faster pace (< avg)
Steady pace (β‰ˆ 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 mi11:56:4631:3310:1031:33
10:10
#26378
10K
6.21 mi12:28:001:02:4710:0731:14
10:04
#26171
15K
9.32 mi12:59:221:34:0910:0731:22
10:06
#26068
20K
12.43 mi13:30:472:05:3410:0731:25
10:07
#25868
HALF
13.11 mi13:37:362:12:2310:066:49
10:01
#25852
25K
15.53 mi14:02:292:37:1610:0824:53
10:16
#25685
30K
18.64 mi14:34:363:09:2310:1032:07
10:21
#25352
20M
20.00 mi14:48:463:23:3310:1114:10
10:26
#25212
21M
21.00 mi14:59:323:34:1910:1310:46
10:46
#25088
35K
21.75 mi15:07:063:41:5310:137:34
10:07
#25017
23M
23.00 mi15:20:123:54:5910:1413:06
10:29
#24916
24M
24.00 mi15:30:364:05:2310:1410:24
10:24
#24881
40K
24.85 mi15:40:094:14:5610:169:33
11:11
#24878
25.2M
25.20 mi15:44:214:19:0810:174:12
12:11
#24868
FINISH
26.22 mi15:55:424:30:2910:2011:21
11:09
#24924
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi26378109081090825914(Top 89%)10676(Top 85%)10676(Top 615%)
10K6.21 mi3.10 mi26171+20710812+9610812+9625991(Top 90%)10721(Top 85%)10721(Top 617%)
15K9.32 mi3.11 mi26068+10310760+5210760+5225914(Top 89%)10676(Top 85%)10676(Top 615%)
20K12.43 mi3.11 mi25868+20010634+12610634+12625292(Top 87%)10354(Top 82%)10354(Top 596%)
HALF13.11 mi0.68 mi25852+1610635-110635-125705(Top 89%)10600(Top 84%)10600(Top 610%)
25K15.53 mi2.42 mi25685+16710563+7210563+7224924(Top 86%)10192(Top 81%)10192(Top 587%)
30K18.64 mi3.11 mi25352+33310403+16010403+16023946(Top 83%)9802(Top 78%)9802(Top 564%)
20M20.00 mi1.36 mi25212+14010355+4810355+4823698(Top 82%)9751(Top 78%)9751(Top 561%)
21M21.00 mi1.00 mi25088+12410310+4510310+4522604(Top 78%)9209(Top 73%)9209(Top 530%)
35K21.75 mi0.75 mi25017+7110277+3310277+3323473(Top 81%)9708(Top 77%)9708(Top 559%)
23M23.00 mi1.25 mi24916+10110241+3610241+3623320(Top 80%)9687(Top 77%)9687(Top 558%)
24M24.00 mi1.00 mi24881+3510232+910232+923865(Top 82%)10009(Top 80%)10009(Top 576%)
40K24.85 mi0.85 mi24878+310242-1010242-1024591(Top 85%)10437(Top 83%)10437(Top 601%)
25.2M25.20 mi0.35 mi24868+1010248-610248-624796(Top 85%)10542(Top 84%)10542(Top 607%)
FINISH26.22 mi1.02 mi24924-5610289-4110289-4126338(Top 91%)11314(Top 90%)11314(Top 651%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 89%
Γ—21
+97ft-345ft

Overall

25914

Females

10676

F40-44

10676

5K→10K

3.1 - 6.2 mi

Top 90%
Γ—5
+79ft-138ft

Overall

25991

Females

10721

F40-44

10721

10K→15K

6.2 - 9.3 mi

Top 89%
Γ—3
+67ft-78ft

Overall

25914

Females

10676

F40-44

10676

15K→20K

9.3 - 12.4 mi

Top 87%
Γ—5
+106ft-86ft

Overall

25292

Females

10354

F40-44

10354

20K→HALF

12.4 - 13.1 mi

Top 89%
Γ—2
+19ft-37ft

Overall

25705

Females

10600

F40-44

10600

HALF→25K

13.1 - 15.5 mi

Top 86%
Γ—4
+66ft-88ft

Overall

24924

Females

10192

F40-44

10192

25K→30K

15.5 - 18.6 mi

Top 83%
Γ—9
+181ft-148ft

Overall

23946

Females

9802

F40-44

9802

30K→20M

18.6 - 20.0 mi

Top 82%
Γ—5
+64ft-50ft

Overall

23698

Females

9751

F40-44

9751

20M→21M

20.0 - 21.0 mi

Top 78%
Γ—8
+106ft-24ft

Overall

22604

Females

9209

F40-44

9209

21M→35K

21.0 - 21.8 mi

Top 81%
Γ—7
+17ft-86ft

Overall

23473

Females

9708

F40-44

9708

35K→23M

21.8 - 23.0 mi

Top 80%
Γ—5
+23ft-63ft

Overall

23320

Females

9687

F40-44

9687

23M→24M

23.0 - 24.0 mi

Top 82%
Γ—6
+12ft-82ft

Overall

23865

Females

10009

F40-44

10009

24M→40K

24.0 - 24.9 mi

Top 85%
Γ—1
+6ft-20ft

Overall

24591

Females

10437

F40-44

10437

40K→25.2M

24.9 - 25.2 mi

Top 85%
Γ—1
+13ft-16ft

Overall

24796

Females

10542

F40-44

10542

25.2M→FINISH

25.2 - 26.2 mi

Top 91%
Γ—2
+22ft-21ft

Overall

26338

Females

11314

F40-44

11314

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1893*
Passed By
439
Net Change
+1454
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start β†’ 5K----#26378
5K β†’ 10K311*104+207#26378#26171
10K β†’ 15K17067+103#26171#26068
15K β†’ 20K229*29+200#26068#25868
20K β†’ HALF2913+16#25868#25852
HALF β†’ 25K18215+167#25852#25685
25K β†’ 30K342*9+333#25685#25352
30K β†’ 20M1477+140#25352#25212
20M β†’ 21M1306+124#25212#25088
21M β†’ 35K787+71#25088#25017
35K β†’ 23M12322+101#25017#24916
23M β†’ 24M6025+35#24916#24881
24M β†’ 40K4643+3#24881#24878
40K β†’ 25.2M2616+10#24878#24868
25.2M β†’ FINISH2076-56#24868#24924
TOTALS1893*439+1454

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

πŸ“Š

Passing Analysis Visualizations

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

Time:
Category:

πŸ“ˆPosition Graph

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🎨Heatmap Timeline

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πŸ”„Passing Circle

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🌊Position Flow

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πŸƒRace Lanes

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Qualifying & Age Grade

See how your performance stacks up against qualifying standards

OTQ

Olympic Trials Qualifying analysis available

Activity Data

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