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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Atsushi Nakajima

Bib: 23830 •M •Age: N/A

Boston Marathon logo
0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Gender (Male)
#0 / 16340
Masters (Masters Men)
#0 / 10617
Age Group (M60-64)
#0 / 1514
Top 44%
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
25:18
3.11 mi
Rank: #17863
Start → 5K
25:18 | 8:09/mi
10K
50:52
6.21 mi
Rank: #18323 (-460)
5K → 10K
25:34 | 8:14/mi
15K
1:16:48
9.32 mi
Rank: #18631 (-308)
10K → 15K
25:56 | 8:21/mi
20K
1:42:59
12.43 mi
Rank: #18679 (-48)
15K → 20K
26:11 | 8:26/mi
HALF
1:48:38
13.11 mi
Rank: #18682 (-3)
20K → HALF
5:39 | 8:18/mi
25K
2:08:57
15.53 mi
Rank: #18533 (+149)
HALF → 25K
20:19 | 8:23/mi
30K
2:36:00
18.64 mi
Rank: #18447 (+86)
25K → 30K
27:03 | 8:43/mi
20M
2:47:59
20.00 mi
Rank: #18387 (+60)
30K → 20M
11:59 | 8:50/mi
21M
2:57:36
21.00 mi
Rank: #18406 (-19)
20M → 21M
9:37 | 9:37/mi
35K
3:03:51
21.75 mi
Rank: #18347 (+59)
21M → 35K
6:15 | 8:22/mi
23M
3:15:21
23.00 mi
Rank: #18402 (-55)
35K → 23M
11:30 | 9:12/mi
24M
3:23:56
24.00 mi
Rank: #18356 (+46)
23M → 24M
8:35 | 8:35/mi
40K
3:31:42
24.85 mi
Rank: #18367 (-11)
24M → 40K
7:46 | 9:06/mi
25.2M
3:35:15
25.20 mi
Rank: #18406 (-39)
40K → 25.2M
3:33 | 10:18/mi
FINISH
3:44:27
26.22 mi
Rank: #18515 (-109)
25.2M → FINISH
9:12 | 9:02/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:48:38
Pace8:18 /mi
2nd Half
Distance13.11 mi
Time1:55:49
Pace8:51 /mi
📊Positive Split: 6.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:28:1625:188:0925:18
8:09
-
10K
6.21 mi11:53:5050:528:1225:34
8:14
+0:05
15K
9.32 mi12:19:461:16:488:1525:56
8:21
+0:07
20K
12.43 mi12:45:571:42:598:1826:11
8:26
+0:05
HALF
13.11 mi12:51:361:48:388:185:39
8:18
-0:08
25K
15.53 mi13:11:552:08:578:1920:19
8:23
+0:05
30K
18.64 mi13:38:582:36:008:2327:03
8:43
+0:20
20M
20.00 mi13:50:572:47:598:2411:59
8:50
+0:07
21M
21.00 mi14:00:342:57:368:289:37
9:37
+0:47
35K
21.75 mi14:06:493:03:518:286:15
8:22
-1:15
23M
23.00 mi14:18:193:15:218:3011:30
9:12
+0:50
24M
24.00 mi14:26:543:23:568:308:35
8:35
-0:37
40K
24.85 mi14:34:403:31:428:327:46
9:06
+0:31
25.2M
25.20 mi14:38:133:35:158:333:33
10:18
+1:12
FINISH
26.22 mi14:47:253:44:278:359:12
9:02
-1:16

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

8:09 /mi

Average Pace

8:34 /mi

Slowest Pace

10:18 /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

50:52

23% of race

Time at Steady Pace

2:11:57

59% of race

Time at Slower Pace

41:38

19% of race

Average Pace: 8:34 /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 mi11:28:1625:188:0925:18
8:09
#17863
10K
6.21 mi11:53:5050:528:1225:34
8:14
#18323
15K
9.32 mi12:19:461:16:488:1525:56
8:21
#18631
20K
12.43 mi12:45:571:42:598:1826:11
8:26
#18679
HALF
13.11 mi12:51:361:48:388:185:39
8:18
#18682
25K
15.53 mi13:11:552:08:578:1920:19
8:23
#18533
30K
18.64 mi13:38:582:36:008:2327:03
8:43
#18447
20M
20.00 mi13:50:572:47:598:2411:59
8:50
#18387
21M
21.00 mi14:00:342:57:368:289:37
9:37
#18406
35K
21.75 mi14:06:493:03:518:286:15
8:22
#18347
23M
23.00 mi14:18:193:15:218:3011:30
9:12
#18402
24M
24.00 mi14:26:543:23:568:308:35
8:35
#18356
40K
24.85 mi14:34:403:31:428:327:46
9:06
#18367
25.2M
25.20 mi14:38:133:35:158:333:33
10:18
#18406
FINISH
26.22 mi14:47:253:44:278:359:12
9:02
#18515
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi17863113611136119259(Top 66%)11989(Top 73%)11989(Top 792%)
10K6.21 mi3.10 mi18323-46011568-20711568-20718733(Top 65%)11778(Top 72%)11778(Top 778%)
15K9.32 mi3.11 mi18631-30811714-14611714-14619259(Top 66%)11989(Top 73%)11989(Top 792%)
20K12.43 mi3.11 mi18679-4811724-1011724-1018877(Top 65%)11792(Top 72%)11792(Top 779%)
HALF13.11 mi0.68 mi18682-311722+211722+218913(Top 65%)11824(Top 72%)11824(Top 781%)
25K15.53 mi2.42 mi18533+14911648+7411648+7417850(Top 62%)11304(Top 69%)11304(Top 747%)
30K18.64 mi3.11 mi18447+8611576+7211576+7218047(Top 62%)11275(Top 69%)11275(Top 745%)
20M20.00 mi1.36 mi18387+6011530+4611530+4618068(Top 62%)11204(Top 69%)11204(Top 740%)
21M21.00 mi1.00 mi18406-1911522+811522+819019(Top 66%)11610(Top 71%)11610(Top 767%)
35K21.75 mi0.75 mi18347+5911484+3811484+3816749(Top 58%)10523(Top 64%)10523(Top 695%)
23M23.00 mi1.25 mi18402-5511494-1011494-1019363(Top 67%)11634(Top 71%)11634(Top 768%)
24M24.00 mi1.00 mi18356+4611455+3911455+3917361(Top 60%)10641(Top 65%)10641(Top 703%)
40K24.85 mi0.85 mi18367-1111444+1111444+1118765(Top 65%)11239(Top 69%)11239(Top 742%)
25.2M25.20 mi0.35 mi18406-3911454-1011454-1020365(Top 70%)12023(Top 74%)12023(Top 794%)
FINISH26.22 mi1.02 mi18515-10911483-2911483-2920610(Top 71%)12156(Top 74%)12156(Top 803%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21
+97ft-345ft

Overall

19259

Males

11989

M60-64

11989

5K→10K

3.1 - 6.2 mi

Top 65%
×5
+79ft-138ft

Overall

18733

Males

11778

M60-64

11778

10K→15K

6.2 - 9.3 mi

Top 66%
×3
+67ft-78ft

Overall

19259

Males

11989

M60-64

11989

15K→20K

9.3 - 12.4 mi

Top 65%
×5
+106ft-86ft

Overall

18877

Males

11792

M60-64

11792

20K→HALF

12.4 - 13.1 mi

Top 65%
×2
+19ft-37ft

Overall

18913

Males

11824

M60-64

11824

HALF→25K

13.1 - 15.5 mi

Top 62%
×4
+66ft-88ft

Overall

17850

Males

11304

M60-64

11304

25K→30K

15.5 - 18.6 mi

Top 62%
×9
+181ft-148ft

Overall

18047

Males

11275

M60-64

11275

30K→20M

18.6 - 20.0 mi

Top 62%
×5
+64ft-50ft

Overall

18068

Males

11204

M60-64

11204

20M→21M

20.0 - 21.0 mi

Top 66%
×8
+106ft-24ft

Overall

19019

Males

11610

M60-64

11610

21M→35K

21.0 - 21.8 mi

Top 58%
×7
+17ft-86ft

Overall

16749

Males

10523

M60-64

10523

35K→23M

21.8 - 23.0 mi

Top 67%
×5
+23ft-63ft

Overall

19363

Males

11634

M60-64

11634

23M→24M

23.0 - 24.0 mi

Top 60%
×6
+12ft-82ft

Overall

17361

Males

10641

M60-64

10641

24M→40K

24.0 - 24.9 mi

Top 65%
×1
+6ft-20ft

Overall

18765

Males

11239

M60-64

11239

40K→25.2M

24.9 - 25.2 mi

Top 70%
×1
+13ft-16ft

Overall

20365

Males

12023

M60-64

12023

25.2M→FINISH

25.2 - 26.2 mi

Top 71%
×2
+22ft-21ft

Overall

20610

Males

12156

M60-64

12156

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1340*
Passed By
1424
Net Change
-652
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17863
5K → 10K119200-460#17863#18323
10K → 15K81200-308#18323#18631
15K → 20K139187-48#18631#18679
20K → HALF3033-3#18679#18682
HALF → 25K203*54+149#18682#18533
25K → 30K220*134+86#18533#18447
30K → 20M10949+60#18447#18387
20M → 21M84103-19#18387#18406
21M → 35K7819+59#18406#18347
35K → 23M73128-55#18347#18402
23M → 24M9145+46#18402#18356
24M → 40K5465-11#18356#18367
40K → 25.2M2463-39#18367#18406
25.2M → FINISH35144-109#18406#18515
TOTALS1340*1424-652

* 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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