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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Sarah Birchfield

Bib: 28347 •F •Age: N/A

AZ

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
51°/41°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
34:55
3.11 mi
Rank: #28287
Start → 5K
34:55 | 11:15/mi
10K
1:10:31
6.21 mi
Rank: #28265 (+22)
5K → 10K
35:36 | 11:28/mi
15K
1:47:56
9.32 mi
Rank: #28320 (-55)
10K → 15K
37:25 | 12:03/mi
20K
2:25:23
12.43 mi
Rank: #28270 (+50)
15K → 20K
37:27 | 12:04/mi
HALF
2:33:19
13.11 mi
Rank: #28259 (+11)
20K → HALF
7:56 | 11:39/mi
25K
3:04:39
15.53 mi
Rank: #28251 (+8)
HALF → 25K
31:20 | 12:56/mi
30K
3:46:21
18.64 mi
Rank: #28221 (+30)
25K → 30K
41:42 | 13:26/mi
20M
4:04:45
20.00 mi
Rank: #28206 (+15)
30K → 20M
18:24 | 13:33/mi
21M
4:19:40
21.00 mi
Rank: #28200 (+6)
20M → 21M
14:55 | 14:55/mi
35K
4:28:02
21.75 mi
Rank: #28137 (+63)
21M → 35K
8:22 | 11:12/mi
23M
4:43:10
23.00 mi
Rank: #28067 (+70)
35K → 23M
15:08 | 12:06/mi
24M
4:54:48
24.00 mi
Rank: #28015 (+52)
23M → 24M
11:38 | 11:38/mi
40K
5:06:19
24.85 mi
Rank: #28007 (+8)
24M → 40K
11:31 | 13:29/mi
25.2M
5:10:46
25.20 mi
Rank: #27985 (+22)
40K → 25.2M
4:27 | 12:55/mi
FINISH
5:22:42
26.22 mi
Rank: #27958 (+27)
25.2M → FINISH
11:56 | 11:43/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time2:33:19
Pace11:42 /mi
2nd Half
Distance13.11 mi
Time2:49:23
Pace12:56 /mi
📊Positive Split: 10.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi12:00:5134:5511:1534:55
11:15
-
10K
6.21 mi12:36:271:10:3111:2135:36
11:28
+0:13
15K
9.32 mi13:13:521:47:5611:3537:25
12:03
+0:35
20K
12.43 mi13:51:192:25:2311:4237:27
12:04
+0:01
HALF
13.11 mi13:59:152:33:1911:427:56
11:39
-0:25
25K
15.53 mi14:30:353:04:3911:5431:20
12:56
+1:17
30K
18.64 mi15:12:173:46:2112:0941:42
13:26
+0:30
20M
20.00 mi15:30:414:04:4512:1518:24
13:33
+0:07
21M
21.00 mi15:45:364:19:4012:2214:55
14:55
+1:22
35K
21.75 mi15:53:584:28:0212:208:22
11:12
-3:43
23M
23.00 mi16:09:064:43:1012:1915:08
12:06
+0:54
24M
24.00 mi16:20:444:54:4812:1811:38
11:38
-0:28
40K
24.85 mi16:32:155:06:1912:2011:31
13:29
+1:51
25.2M
25.20 mi16:36:425:10:4612:204:27
12:55
-0:34
FINISH
26.22 mi16:48:385:22:4212:2011:56
11:43
-1:12

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

11:12 /mi

Average Pace

12:19 /mi

Slowest Pace

14:55 /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

1:18:53

24% of race

Time at Steady Pace

2:01:30

38% of race

Time at Slower Pace

2:02:19

38% of race

Average Pace: 12:18 /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 mi12:00:5134:5511:1534:55
11:15
#28287
10K
6.21 mi12:36:271:10:3111:2135:36
11:28
#28265
15K
9.32 mi13:13:521:47:5611:3537:25
12:03
#28320
20K
12.43 mi13:51:192:25:2311:4237:27
12:04
#28270
HALF
13.11 mi13:59:152:33:1911:427:56
11:39
#28259
25K
15.53 mi14:30:353:04:3911:5431:20
12:56
#28251
30K
18.64 mi15:12:173:46:2112:0941:42
13:26
#28221
20M
20.00 mi15:30:414:04:4512:1518:24
13:33
#28206
21M
21.00 mi15:45:364:19:4012:2214:55
14:55
#28200
35K
21.75 mi15:53:584:28:0212:208:22
11:12
#28137
23M
23.00 mi16:09:064:43:1012:1915:08
12:06
#28067
24M
24.00 mi16:20:444:54:4812:1811:38
11:38
#28015
40K
24.85 mi16:32:155:06:1912:2011:31
13:29
#28007
25.2M
25.20 mi16:36:425:10:4612:204:27
12:55
#27985
FINISH
26.22 mi16:48:385:22:4212:2011:56
11:43
#27958
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 mi28287120751207528390(Top 98%)12169(Top 97%)12169(Top 701%)
10K6.21 mi3.10 mi28265+2212057+1812057+1828193(Top 97%)12027(Top 96%)12027(Top 692%)
15K9.32 mi3.11 mi28320-5512099-4212099-4228390(Top 98%)12169(Top 97%)12169(Top 701%)
20K12.43 mi3.11 mi28270+5012068+3112068+3128072(Top 97%)11963(Top 95%)11963(Top 689%)
HALF13.11 mi0.68 mi28259+1112062+612062+628021(Top 97%)11972(Top 95%)11972(Top 689%)
25K15.53 mi2.42 mi28251+812071-912071-928184(Top 97%)12066(Top 96%)12066(Top 695%)
30K18.64 mi3.11 mi28221+3012055+1612055+1628034(Top 97%)12022(Top 96%)12022(Top 692%)
20M20.00 mi1.36 mi28206+1512050+512050+527824(Top 96%)11943(Top 95%)11943(Top 688%)
21M21.00 mi1.00 mi28200+612053-312053-328010(Top 97%)12067(Top 96%)12067(Top 695%)
35K21.75 mi0.75 mi28137+6312022+3112022+3125585(Top 88%)10833(Top 86%)10833(Top 624%)
23M23.00 mi1.25 mi28067+7011977+4511977+4526255(Top 90%)11200(Top 89%)11200(Top 645%)
24M24.00 mi1.00 mi28015+5211953+2411953+2426139(Top 90%)11189(Top 89%)11189(Top 644%)
40K24.85 mi0.85 mi28007+811950+311950+327484(Top 95%)11863(Top 94%)11863(Top 683%)
25.2M25.20 mi0.35 mi27985+2211939+1111939+1125964(Top 89%)11104(Top 88%)11104(Top 639%)
FINISH26.22 mi1.02 mi27958+2711931+811931+827145(Top 94%)11708(Top 93%)11708(Top 674%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 98%
×21
+97ft-345ft

Overall

28390

Females

12169

F40-44

12169

5K→10K

3.1 - 6.2 mi

Top 97%
×5
+79ft-138ft

Overall

28193

Females

12027

F40-44

12027

10K→15K

6.2 - 9.3 mi

Top 98%
×3
+67ft-78ft

Overall

28390

Females

12169

F40-44

12169

15K→20K

9.3 - 12.4 mi

Top 97%
×5
+106ft-86ft

Overall

28072

Females

11963

F40-44

11963

20K→HALF

12.4 - 13.1 mi

Top 97%
×2
+19ft-37ft

Overall

28021

Females

11972

F40-44

11972

HALF→25K

13.1 - 15.5 mi

Top 97%
×4
+66ft-88ft

Overall

28184

Females

12066

F40-44

12066

25K→30K

15.5 - 18.6 mi

Top 97%
×9
+181ft-148ft

Overall

28034

Females

12022

F40-44

12022

30K→20M

18.6 - 20.0 mi

Top 96%
×5
+64ft-50ft

Overall

27824

Females

11943

F40-44

11943

20M→21M

20.0 - 21.0 mi

Top 97%
×8
+106ft-24ft

Overall

28010

Females

12067

F40-44

12067

21M→35K

21.0 - 21.8 mi

Top 88%
×7
+17ft-86ft

Overall

25585

Females

10833

F40-44

10833

35K→23M

21.8 - 23.0 mi

Top 90%
×5
+23ft-63ft

Overall

26255

Females

11200

F40-44

11200

23M→24M

23.0 - 24.0 mi

Top 90%
×6
+12ft-82ft

Overall

26139

Females

11189

F40-44

11189

24M→40K

24.0 - 24.9 mi

Top 95%
×1
+6ft-20ft

Overall

27484

Females

11863

F40-44

11863

40K→25.2M

24.9 - 25.2 mi

Top 89%
×1
+13ft-16ft

Overall

25964

Females

11104

F40-44

11104

25.2M→FINISH

25.2 - 26.2 mi

Top 94%
×2
+22ft-21ft

Overall

27145

Females

11708

F40-44

11708

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
727
Passed By
398
Net Change
+329
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#28287
5K → 10K11795+22#28287#28265
10K → 15K58113-55#28265#28320
15K → 20K8333+50#28320#28270
20K → HALF198+11#28270#28259
HALF → 25K5749+8#28259#28251
25K → 30K7242+30#28251#28221
30K → 20M2712+15#28221#28206
20M → 21M2923+6#28206#28200
21M → 35K630+63#28200#28137
35K → 23M700+70#28137#28067
23M → 24M542+52#28067#28015
24M → 40K2113+8#28015#28007
40K → 25.2M231+22#28007#27985
25.2M → FINISH347+27#27985#27958
TOTALS727398+329
📊

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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Qualifying & Age Grade

See how your performance stacks up against qualifying standards

OTQ

Olympic Trials Qualifying analysis available

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