All Results|Race Analytics|Course|Contact
BOSTON MARATHON 2026

Junko Kurokawa

Bib: 31988•F

Boston Marathon logo
0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 29021
Gender (Female)
#0 / 12578
Masters (Masters Women)
#0 / 6862
Age Group (F50-54)
#0 / 1233
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
34:23
3.11 mi
Rank: #28102
Start → 5K
34:23 | 11:05/mi
10K
1:06:33
6.21 mi
Rank: #27418 (+684)
5K → 10K
32:10 | 10:22/mi
15K
1:42:52
9.32 mi
Rank: #27779 (-361)
10K → 15K
36:19 | 11:42/mi
20K
2:22:09
12.43 mi
Rank: #28041 (-262)
15K → 20K
39:17 | 12:39/mi
HALF
2:29:50
13.11 mi
Rank: #28030 (+11)
20K → HALF
7:41 | 11:17/mi
25K
3:03:52
15.53 mi
Rank: #28206 (-176)
HALF → 25K
34:02 | 14:02/mi
30K
3:52:11
18.64 mi
Rank: #28448 (-242)
25K → 30K
48:19 | 15:34/mi
20M
4:11:22
20.00 mi
Rank: #28447 (+1)
30K → 20M
19:11 | 14:08/mi
21M
4:26:05
21.00 mi
Rank: #28432 (+15)
20M → 21M
14:43 | 14:43/mi
35K
4:36:07
21.75 mi
Rank: #28439 (-7)
21M → 35K
10:02 | 13:25/mi
23M
4:52:48
23.00 mi
Rank: #28412 (+27)
35K → 23M
16:41 | 13:20/mi
24M
5:06:17
24.00 mi
Rank: #28395 (+17)
23M → 24M
13:29 | 13:29/mi
40K
5:17:58
24.85 mi
Rank: #28388 (+7)
24M → 40K
11:41 | 13:40/mi
25.2M
5:22:57
25.20 mi
Rank: #28387 (+1)
40K → 25.2M
4:59 | 14:28/mi
FINISH
5:35:38
26.22 mi
Rank: #28367 (+20)
25.2M → FINISH
12:41 | 12:27/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time2:29:50
Pace11:26 /mi
2nd Half
Distance13.11 mi
Time3:05:48
Pace14:11 /mi
📊Positive Split: 24.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi12:01:5134:2311:0534:23
11:05
-
10K
6.21 mi12:34:011:06:3310:4332:10
10:22
-0:43
15K
9.32 mi13:10:201:42:5211:0336:19
11:42
+1:20
20K
12.43 mi13:49:372:22:0911:2739:17
12:39
+0:57
HALF
13.11 mi13:57:182:29:5011:267:41
11:17
-1:22
25K
15.53 mi14:31:203:03:5211:5134:02
14:02
+2:45
30K
18.64 mi15:19:393:52:1112:2848:19
15:34
+1:32
20M
20.00 mi15:38:504:11:2212:3519:11
14:08
-1:26
21M
21.00 mi15:53:334:26:0512:4114:43
14:43
+0:35
35K
21.75 mi16:03:354:36:0712:4210:02
13:25
-1:18
23M
23.00 mi16:20:164:52:4812:4416:41
13:20
-0:05
24M
24.00 mi16:33:455:06:1712:4613:29
13:29
+0:09
40K
24.85 mi16:45:265:17:5812:4811:41
13:40
+0:11
25.2M
25.20 mi16:50:255:22:5712:494:59
14:28
+0:48
FINISH
26.22 mi17:03:065:35:3812:4912:41
12:27
-2:01

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

10:22 /mi

Average Pace

12:49 /mi

Slowest Pace

15:34 /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

2:42:31

48% of race

Time at Steady Pace

1:25:55

26% of race

Time at Slower Pace

1:27:12

26% of race

Average Pace: 12:48 /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 mi12:01:5134:2311:0534:23
11:05
#28102
10K
6.21 mi12:34:011:06:3310:4332:10
10:22
#27418
15K
9.32 mi13:10:201:42:5211:0336:19
11:42
#27779
20K
12.43 mi13:49:372:22:0911:2739:17
12:39
#28041
HALF
13.11 mi13:57:182:29:5011:267:41
11:17
#28030
25K
15.53 mi14:31:203:03:5211:5134:02
14:02
#28206
30K
18.64 mi15:19:393:52:1112:2848:19
15:34
#28448
20M
20.00 mi15:38:504:11:2212:3519:11
14:08
#28447
21M
21.00 mi15:53:334:26:0512:4114:43
14:43
#28432
35K
21.75 mi16:03:354:36:0712:4210:02
13:25
#28439
23M
23.00 mi16:20:164:52:4812:4416:41
13:20
#28412
24M
24.00 mi16:33:455:06:1712:4613:29
13:29
#28395
40K
24.85 mi16:45:265:17:5812:4811:41
13:40
#28388
25.2M
25.20 mi16:50:255:22:5712:494:59
14:28
#28387
FINISH
26.22 mi17:03:065:35:3812:4912:41
12:27
#28367
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 mi28102119521195228145(Top 97%)12006(Top 95%)12006(Top 974%)
10K6.21 mi3.10 mi27418+68411530+42211530+42226659(Top 92%)11104(Top 88%)11104(Top 901%)
15K9.32 mi3.11 mi27779-36111759-22911759-22928145(Top 97%)12006(Top 95%)12006(Top 974%)
20K12.43 mi3.11 mi28041-26211932-17311932-17328438(Top 98%)12208(Top 97%)12208(Top 990%)
HALF13.11 mi0.68 mi28030+1111924+811924+827663(Top 95%)11747(Top 93%)11747(Top 953%)
25K15.53 mi2.42 mi28206-17612040-11612040-11628699(Top 99%)12393(Top 99%)12393(Top 1005%)
30K18.64 mi3.11 mi28448-24212206-16612206-16628887(Top 100%)12513(Top 99%)12513(Top 1015%)
20M20.00 mi1.36 mi28447+112212-612212-628202(Top 97%)12151(Top 97%)12151(Top 985%)
21M21.00 mi1.00 mi28432+1512201+1112201+1127888(Top 96%)12006(Top 95%)12006(Top 974%)
35K21.75 mi0.75 mi28439-712209-812209-827997(Top 96%)12098(Top 96%)12098(Top 981%)
23M23.00 mi1.25 mi28412+2712195+1412195+1427659(Top 95%)11897(Top 95%)11897(Top 965%)
24M24.00 mi1.00 mi28395+1712192+312192+328016(Top 97%)12121(Top 96%)12121(Top 983%)
40K24.85 mi0.85 mi28388+7121921219227650(Top 95%)11942(Top 95%)11942(Top 969%)
25.2M25.20 mi0.35 mi28387+112193-112193-127592(Top 95%)11930(Top 95%)11930(Top 968%)
FINISH26.22 mi1.02 mi28367+2012183+1012183+1027852(Top 96%)12048(Top 96%)12048(Top 977%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 97%
×21
+97ft-345ft

Overall

28145

Females

12006

F50-54

12006

5K→10K

3.1 - 6.2 mi

Top 92%
×5
+79ft-138ft

Overall

26659

Females

11104

F50-54

11104

10K→15K

6.2 - 9.3 mi

Top 97%
×3
+67ft-78ft

Overall

28145

Females

12006

F50-54

12006

15K→20K

9.3 - 12.4 mi

Top 98%
×5
+106ft-86ft

Overall

28438

Females

12208

F50-54

12208

20K→HALF

12.4 - 13.1 mi

Top 95%
×2
+19ft-37ft

Overall

27663

Females

11747

F50-54

11747

HALF→25K

13.1 - 15.5 mi

Top 99%
×4
+66ft-88ft

Overall

28699

Females

12393

F50-54

12393

25K→30K

15.5 - 18.6 mi

Top 100%
×9
+181ft-148ft

Overall

28887

Females

12513

F50-54

12513

30K→20M

18.6 - 20.0 mi

Top 97%
×5
+64ft-50ft

Overall

28202

Females

12151

F50-54

12151

20M→21M

20.0 - 21.0 mi

Top 96%
×8
+106ft-24ft

Overall

27888

Females

12006

F50-54

12006

21M→35K

21.0 - 21.8 mi

Top 96%
×7
+17ft-86ft

Overall

27997

Females

12098

F50-54

12098

35K→23M

21.8 - 23.0 mi

Top 95%
×5
+23ft-63ft

Overall

27659

Females

11897

F50-54

11897

23M→24M

23.0 - 24.0 mi

Top 97%
×6
+12ft-82ft

Overall

28016

Females

12121

F50-54

12121

24M→40K

24.0 - 24.9 mi

Top 95%
×1
+6ft-20ft

Overall

27650

Females

11942

F50-54

11942

40K→25.2M

24.9 - 25.2 mi

Top 95%
×1
+13ft-16ft

Overall

27592

Females

11930

F50-54

11930

25.2M→FINISH

25.2 - 26.2 mi

Top 96%
×2
+22ft-21ft

Overall

27852

Females

12048

F50-54

12048

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
914
Passed By
1179
Net Change
-265
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#28102
5K → 10K6906+684#28102#27418
10K → 15K26387-361#27418#27779
15K → 20K11273-262#27779#28041
20K → HALF165+11#28041#28030
HALF → 25K10186-176#28030#28206
25K → 30K6248-242#28206#28448
30K → 20M1817+1#28448#28447
20M → 21M2611+15#28447#28432
21M → 35K714-7#28432#28439
35K → 23M325+27#28439#28412
23M → 24M2710+17#28412#28395
24M → 40K169+7#28395#28388
40K → 25.2M43+1#28388#28387
25.2M → FINISH255+20#28387#28367
TOTALS9141179-265
📊

Passing Analysis Visualizations

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

Time:
Category:

📈Position Graph

Loading...

🎨Heatmap Timeline

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Activity Data

Upload your GPX file to see detailed activity metrics

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export & Support

Download your data, get help, and share your feedback

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing