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BOSTON MARATHON 2026

Yumi Nakai

Bib: 22672•F

VA

Masters
Boston Marathon logo
0:00
0:00
/ mi
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Overall
#0 / 29021
Gender (Female)
#0 / 12578
Top 47%
Masters (Masters Women)
#0 / 6862
Top 33%
Age Group (F50-54)
#0 / 1233
Top 27%
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· 3.11 mi
25:22
Rank: #18009
Start → 5K
25:22 | 8:10/mi
10K· 6.21 mi
50:53
Rank: #18345 (-336)
5K → 10K
25:31 | 8:13/mi
15K· 9.32 mi
1:16:20
Rank: #18325 (+20)
10K → 15K
25:27 | 8:12/mi
20K· 12.43 mi
1:41:53
Rank: #18158 (+167)
15K → 20K
25:33 | 8:14/mi
HALF· 13.11 mi
1:47:23
Rank: #18118 (+40)
20K → HALF
5:30 | 8:05/mi
25K· 15.53 mi
2:07:17
Rank: #17905 (+213)
HALF → 25K
19:54 | 8:13/mi
30K· 18.64 mi
2:33:17
Rank: #17534 (+371)
25K → 30K
26:00 | 8:23/mi
20M
2:44:26
Rank: #17283 (+251)
30K → 20M
11:09 | 8:13/mi
21M
2:53:11
Rank: #17106 (+177)
20M → 21M
8:45 | 8:45/mi
35K· 21.75 mi
2:59:08
Rank: #16991 (+115)
21M → 35K
5:57 | 7:58/mi
23M
3:09:36
Rank: #16838 (+153)
35K → 23M
10:28 | 8:22/mi
24M
3:17:46
Rank: #16743 (+95)
23M → 24M
8:10 | 8:10/mi
40K· 24.85 mi
3:24:47
Rank: #16624 (+119)
24M → 40K
7:01 | 8:13/mi
25.2M
3:27:53
Rank: #16567 (+57)
40K → 25.2M
3:06 | 9:00/mi
FINISH· 26.22 mi
3:36:14
Rank: #16543 (+24)
25.2M → FINISH
8:21 | 8:12/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
Time1:47:23
Pace8:12 /mi
2nd Half
Distance13.11 mi
Time1:48:51
Pace8:19 /mi
📊Positive Split: 1.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:33:5025:228:1025:22
8:10
-
10K
6.21 mi11:59:2150:538:1225:31
8:13
+0:03
15K
9.32 mi12:24:481:16:208:1225:27
8:12
-0:01
20K
12.43 mi12:50:211:41:538:1225:33
8:14
+0:02
HALF
13.11 mi12:55:511:47:238:125:30
8:05
-0:09
25K
15.53 mi13:15:452:07:178:1219:54
8:13
+0:08
30K
18.64 mi13:41:452:33:178:1426:00
8:23
+0:10
20M
20.00 mi13:52:542:44:268:1411:09
8:13
-0:10
21M
21.00 mi14:01:392:53:118:158:45
8:45
+0:32
35K
21.75 mi14:07:362:59:088:155:57
7:58
-0:47
23M
23.00 mi14:18:043:09:368:1510:28
8:22
+0:24
24M
24.00 mi14:26:143:17:468:158:10
8:10
-0:12
40K
24.85 mi14:33:153:24:478:157:01
8:13
+0:03
25.2M
25.20 mi14:36:213:27:538:153:06
9:00
+0:47
FINISH
26.22 mi14:44:423:36:148:168:21
8:12
-0:48

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

7:58 /mi

Average Pace

8:15 /mi

Slowest Pace

9:00 /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

3:33:08

99% of race

Time at Steady Pace

3:06

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:15 /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 mi11:33:5025:228:1025:22
8:10
#18009
10K
6.21 mi11:59:2150:538:1225:31
8:13
#18345
15K
9.32 mi12:24:481:16:208:1225:27
8:12
#18325
20K
12.43 mi12:50:211:41:538:1225:33
8:14
#18158
HALF
13.11 mi12:55:511:47:238:125:30
8:05
#18118
25K
15.53 mi13:15:452:07:178:1219:54
8:13
#17905
30K
18.64 mi13:41:452:33:178:1426:00
8:23
#17534
20M
20.00 mi13:52:542:44:268:1411:09
8:13
#17283
21M
21.00 mi14:01:392:53:118:158:45
8:45
#17106
35K
21.75 mi14:07:362:59:088:155:57
7:58
#16991
23M
23.00 mi14:18:043:09:368:1510:28
8:22
#16838
24M
24.00 mi14:26:143:17:468:158:10
8:10
#16743
40K
24.85 mi14:33:153:24:478:157:01
8:13
#16624
25.2M
25.20 mi14:36:213:27:538:153:06
9:00
#16567
FINISH
26.22 mi14:44:423:36:148:168:21
8:12
#16543
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi180096516651618298(Top 63%)6634(Top 53%)6634(Top 538%)
10K6.21 mi3.10 mi18345-3366691-1756691-17518647(Top 64%)6819(Top 54%)6819(Top 553%)
15K9.32 mi3.11 mi18325+206665+266665+2618298(Top 63%)6634(Top 53%)6634(Top 538%)
20K12.43 mi3.11 mi18158+1676574+916574+9117634(Top 61%)6298(Top 50%)6298(Top 511%)
HALF13.11 mi0.68 mi18118+406555+196555+1917607(Top 61%)6254(Top 50%)6254(Top 507%)
25K15.53 mi2.42 mi17905+2136446+1096446+10916846(Top 58%)5898(Top 47%)5898(Top 478%)
30K18.64 mi3.11 mi17534+3716258+1886258+18816089(Top 55%)5572(Top 44%)5572(Top 452%)
20M20.00 mi1.36 mi17283+2516126+1326126+13214361(Top 49%)4693(Top 37%)4693(Top 381%)
21M21.00 mi1.00 mi17106+1776053+736053+7314721(Top 51%)4986(Top 40%)4986(Top 404%)
35K21.75 mi0.75 mi16991+1156008+456008+4514222(Top 49%)4771(Top 38%)4771(Top 387%)
23M23.00 mi1.25 mi16838+1535953+555953+5514896(Top 51%)5217(Top 41%)5217(Top 423%)
24M24.00 mi1.00 mi16743+955907+465907+4614892(Top 51%)5281(Top 42%)5281(Top 428%)
40K24.85 mi0.85 mi16624+1195866+415866+4113869(Top 48%)4822(Top 38%)4822(Top 391%)
25.2M25.20 mi0.35 mi16567+575849+175849+1714749(Top 51%)5318(Top 42%)5318(Top 431%)
FINISH26.22 mi1.02 mi16543+245851-25851-216411(Top 57%)6173(Top 49%)6173(Top 501%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 63%
×21stories
+97ft-345ft

Overall

18298

Females

6634

F50-54

6634

5K→10K

3.1 - 6.2 mi

Top 64%
×5stories
+79ft-138ft

Overall

18647

Females

6819

F50-54

6819

10K→15K

6.2 - 9.3 mi

Top 63%
×3stories
+67ft-78ft

Overall

18298

Females

6634

F50-54

6634

15K→20K

9.3 - 12.4 mi

Top 61%
×5stories
+106ft-86ft

Overall

17634

Females

6298

F50-54

6298

20K→HALF

12.4 - 13.1 mi

Top 61%
×2stories
+19ft-37ft

Overall

17607

Females

6254

F50-54

6254

HALF→25K

13.1 - 15.5 mi

Top 58%
×4stories
+66ft-88ft

Overall

16846

Females

5898

F50-54

5898

25K→30K

15.5 - 18.6 mi

Top 55%
×9stories
+181ft-148ft

Overall

16089

Females

5572

F50-54

5572

30K→20M

18.6 - 20.0 mi

Top 49%
×5stories
+64ft-50ft

Overall

14361

Females

4693

F50-54

4693

20M→21M

20.0 - 21.0 mi

Top 51%
×8stories
+106ft-24ft

Overall

14721

Females

4986

F50-54

4986

21M→35K

21.0 - 21.8 mi

Top 49%
×7stories
+17ft-86ft

Overall

14222

Females

4771

F50-54

4771

35K→23M

21.8 - 23.0 mi

Top 51%
×5stories
+23ft-63ft

Overall

14896

Females

5217

F50-54

5217

23M→24M

23.0 - 24.0 mi

Top 51%
×6stories
+12ft-82ft

Overall

14892

Females

5281

F50-54

5281

24M→40K

24.0 - 24.9 mi

Top 48%
×1story
+6ft-20ft

Overall

13869

Females

4822

F50-54

4822

40K→25.2M

24.9 - 25.2 mi

Top 51%
×1story
+13ft-16ft

Overall

14749

Females

5318

F50-54

5318

25.2M→FINISH

25.2 - 26.2 mi

Top 57%
×2stories
+22ft-21ft

Overall

16411

Females

6173

F50-54

6173

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
2436
Passed By
970
Net Change
+1466
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18009
5K → 10K152488-336#18009#18345
10K → 15K187167+20#18345#18325
15K → 20K25285+167#18325#18158
20K → HALF5313+40#18158#18118
HALF → 25K23724+213#18118#17905
25K → 30K41140+371#17905#17534
30K → 20M2598+251#17534#17283
20M → 21M19619+177#17283#17106
21M → 35K1238+115#17106#16991
35K → 23M17522+153#16991#16838
23M → 24M12631+95#16838#16743
24M → 40K12910+119#16743#16624
40K → 25.2M658+57#16624#16567
25.2M → FINISH7147+24#16567#16543
TOTALS2436970+1466
📊

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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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing