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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Naoko Yamamoto

Bib: 23759 •F •Age: N/A

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Gender (Female)
#0 / 12578
Masters (Masters Women)
#0 / 6862
Age Group (F65-69)
#0 / 273
Top 10%
Race Day Weather
51°/41°F
overcast clouds
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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
25:56
3.11 mi
Rank: #19186
Start → 5K
25:56 | 8:21/mi
10K
52:05
6.21 mi
Rank: #19520 (-334)
5K → 10K
26:09 | 8:26/mi
15K
1:19:01
9.32 mi
Rank: #20008 (-488)
10K → 15K
26:56 | 8:41/mi
20K
1:45:52
12.43 mi
Rank: #20020 (-12)
15K → 20K
26:51 | 8:39/mi
HALF
1:51:46
13.11 mi
Rank: #20076 (-56)
20K → HALF
5:54 | 8:40/mi
25K
2:13:27
15.53 mi
Rank: #20232 (-156)
HALF → 25K
21:41 | 8:57/mi
30K
2:41:51
18.64 mi
Rank: #20223 (+9)
25K → 30K
28:24 | 9:09/mi
20M
2:54:16
20.00 mi
Rank: #20181 (+42)
30K → 20M
12:25 | 9:09/mi
21M
3:03:50
21.00 mi
Rank: #20109 (+72)
20M → 21M
9:34 | 9:34/mi
35K
3:10:24
21.75 mi
Rank: #20064 (+45)
21M → 35K
6:34 | 8:47/mi
23M
3:20:56
23.00 mi
Rank: #19799 (+265)
35K → 23M
10:32 | 8:26/mi
24M
3:29:04
24.00 mi
Rank: #19597 (+202)
23M → 24M
8:08 | 8:08/mi
40K
3:36:14
24.85 mi
Rank: #19443 (+154)
24M → 40K
7:10 | 8:23/mi
25.2M
3:39:21
25.20 mi
Rank: #19375 (+68)
40K → 25.2M
3:07 | 9:03/mi
FINISH
3:47:34
26.22 mi
Rank: #19229 (+146)
25.2M → FINISH
8:13 | 8:04/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:51:46
Pace8:32 /mi
2nd Half
Distance13.11 mi
Time1:55:48
Pace8:50 /mi
📊Positive Split: 3.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:28:5225:568:2125:56
8:21
-
10K
6.21 mi11:55:0152:058:2326:09
8:26
+0:05
15K
9.32 mi12:21:571:19:018:2926:56
8:41
+0:15
20K
12.43 mi12:48:481:45:528:3226:51
8:39
-0:02
HALF
13.11 mi12:54:421:51:468:325:54
8:40
+0:01
25K
15.53 mi13:16:232:13:278:3621:41
8:57
+0:17
30K
18.64 mi13:44:472:41:518:4128:24
9:09
+0:12
20M
20.00 mi13:57:122:54:168:4312:25
9:09
0:00
21M
21.00 mi14:06:463:03:508:469:34
9:34
+0:25
35K
21.75 mi14:13:203:10:248:466:34
8:47
-0:47
23M
23.00 mi14:23:523:20:568:4510:32
8:26
-0:21
24M
24.00 mi14:32:003:29:048:438:08
8:08
-0:18
40K
24.85 mi14:39:103:36:148:427:10
8:23
+0:15
25.2M
25.20 mi14:42:173:39:218:433:07
9:03
+0:40
FINISH
26.22 mi14:50:303:47:348:428:13
8:04
-0:59

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

8:04 /mi

Average Pace

8:41 /mi

Slowest Pace

9:34 /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

2:32:23

67% of race

Time at Steady Pace

1:05:37

29% of race

Time at Slower Pace

9:34

4% of race

Average Pace: 8:41 /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 mi11:28:5225:568:2125:56
8:21
#19186
10K
6.21 mi11:55:0152:058:2326:09
8:26
#19520
15K
9.32 mi12:21:571:19:018:2926:56
8:41
#20008
20K
12.43 mi12:48:481:45:528:3226:51
8:39
#20020
HALF
13.11 mi12:54:421:51:468:325:54
8:40
#20076
25K
15.53 mi13:16:232:13:278:3621:41
8:57
#20232
30K
18.64 mi13:44:472:41:518:4128:24
9:09
#20223
20M
20.00 mi13:57:122:54:168:4312:25
9:09
#20181
21M
21.00 mi14:06:463:03:508:469:34
9:34
#20109
35K
21.75 mi14:13:203:10:248:466:34
8:47
#20064
23M
23.00 mi14:23:523:20:568:4510:32
8:26
#19799
24M
24.00 mi14:32:003:29:048:438:08
8:08
#19597
40K
24.85 mi14:39:103:36:148:427:10
8:23
#19443
25.2M
25.20 mi14:42:173:39:218:433:07
9:03
#19375
FINISH
26.22 mi14:50:303:47:348:428:13
8:04
#19229
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF65-69Seg. OverallSeg. FemalesSeg. F65-69
5K3.11 mi3.11 mi191867192719221040(Top 72%)8147(Top 65%)8147(Top 2984%)
10K6.21 mi3.10 mi19520-3347356-1647356-16419894(Top 69%)7538(Top 60%)7538(Top 2761%)
15K9.32 mi3.11 mi20008-4887611-2557611-25521040(Top 72%)8147(Top 65%)8147(Top 2984%)
20K12.43 mi3.11 mi20020-127644-337644-3320123(Top 69%)7692(Top 61%)7692(Top 2818%)
HALF13.11 mi0.68 mi20076-567674-307674-3021118(Top 73%)8169(Top 65%)8169(Top 2992%)
25K15.53 mi2.42 mi20232-1567761-877761-8720911(Top 72%)8118(Top 65%)8118(Top 2974%)
30K18.64 mi3.11 mi20223+97767-67767-620256(Top 70%)7863(Top 63%)7863(Top 2880%)
20M20.00 mi1.36 mi20181+427764+37764+319613(Top 68%)7597(Top 60%)7597(Top 2783%)
21M21.00 mi1.00 mi20109+727738+267738+2618818(Top 65%)7230(Top 57%)7230(Top 2648%)
35K21.75 mi0.75 mi20064+457713+257713+2519027(Top 66%)7450(Top 59%)7450(Top 2729%)
23M23.00 mi1.25 mi19799+2657610+1037610+10315237(Top 53%)5401(Top 43%)5401(Top 1978%)
24M24.00 mi1.00 mi19597+2027518+927518+9214704(Top 51%)5188(Top 41%)5188(Top 1900%)
40K24.85 mi0.85 mi19443+1547446+727446+7215013(Top 52%)5454(Top 43%)5454(Top 1998%)
25.2M25.20 mi0.35 mi19375+687417+297417+2915068(Top 52%)5518(Top 44%)5518(Top 2021%)
FINISH26.22 mi1.02 mi19229+1467358+597358+5915621(Top 54%)5756(Top 46%)5756(Top 2108%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 72%
×21
+97ft-345ft

Overall

21040

Females

8147

F65-69

8147

5K→10K

3.1 - 6.2 mi

Top 69%
×5
+79ft-138ft

Overall

19894

Females

7538

F65-69

7538

10K→15K

6.2 - 9.3 mi

Top 72%
×3
+67ft-78ft

Overall

21040

Females

8147

F65-69

8147

15K→20K

9.3 - 12.4 mi

Top 69%
×5
+106ft-86ft

Overall

20123

Females

7692

F65-69

7692

20K→HALF

12.4 - 13.1 mi

Top 73%
×2
+19ft-37ft

Overall

21118

Females

8169

F65-69

8169

HALF→25K

13.1 - 15.5 mi

Top 72%
×4
+66ft-88ft

Overall

20911

Females

8118

F65-69

8118

25K→30K

15.5 - 18.6 mi

Top 70%
×9
+181ft-148ft

Overall

20256

Females

7863

F65-69

7863

30K→20M

18.6 - 20.0 mi

Top 68%
×5
+64ft-50ft

Overall

19613

Females

7597

F65-69

7597

20M→21M

20.0 - 21.0 mi

Top 65%
×8
+106ft-24ft

Overall

18818

Females

7230

F65-69

7230

21M→35K

21.0 - 21.8 mi

Top 66%
×7
+17ft-86ft

Overall

19027

Females

7450

F65-69

7450

35K→23M

21.8 - 23.0 mi

Top 53%
×5
+23ft-63ft

Overall

15237

Females

5401

F65-69

5401

23M→24M

23.0 - 24.0 mi

Top 51%
×6
+12ft-82ft

Overall

14704

Females

5188

F65-69

5188

24M→40K

24.0 - 24.9 mi

Top 52%
×1
+6ft-20ft

Overall

15013

Females

5454

F65-69

5454

40K→25.2M

24.9 - 25.2 mi

Top 52%
×1
+13ft-16ft

Overall

15068

Females

5518

F65-69

5518

25.2M→FINISH

25.2 - 26.2 mi

Top 54%
×2
+22ft-21ft

Overall

15621

Females

5756

F65-69

5756

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1761*
Passed By
1172
Net Change
-43
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19186
5K → 10K130200-334#19186#19520
10K → 15K43200-488#19520#20008
15K → 20K156168-12#20008#20020
20K → HALF1066-56#20020#20076
HALF → 25K81200-156#20076#20232
25K → 30K201*192+9#20232#20223
30K → 20M9553+42#20223#20181
20M → 21M11442+72#20181#20109
21M → 35K7328+45#20109#20064
35K → 23M268*3+265#20064#19799
23M → 24M205*3+202#19799#19597
24M → 40K1628+154#19597#19443
40K → 25.2M724+68#19443#19375
25.2M → FINISH1515+146#19375#19229
TOTALS1761*1172-43

* 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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