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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Jein Song

Bib: 21787 •F •Age: N/A

CA

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
Top 47%
Age Group (F45-49)
#0 / 1786
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
27:25
3.11 mi
Rank: #21814
Start → 5K
27:25 | 8:50/mi
10K
54:18
6.21 mi
Rank: #21539 (+275)
5K → 10K
26:53 | 8:40/mi
15K
1:21:05
9.32 mi
Rank: #21273 (+266)
10K → 15K
26:47 | 8:38/mi
20K
1:48:05
12.43 mi
Rank: #21031 (+242)
15K → 20K
27:00 | 8:42/mi
HALF
1:54:00
13.11 mi
Rank: #21035 (-4)
20K → HALF
5:55 | 8:41/mi
25K
2:14:56
15.53 mi
Rank: #20764 (+271)
HALF → 25K
20:56 | 8:38/mi
30K
2:41:50
18.64 mi
Rank: #20213 (+551)
25K → 30K
26:54 | 8:40/mi
20M
2:53:16
20.00 mi
Rank: #19902 (+311)
30K → 20M
11:26 | 8:26/mi
21M
3:02:01
21.00 mi
Rank: #19637 (+265)
20M → 21M
8:45 | 8:45/mi
35K
3:08:15
21.75 mi
Rank: #19538 (+99)
21M → 35K
6:14 | 8:20/mi
23M
3:18:55
23.00 mi
Rank: #19319 (+219)
35K → 23M
10:40 | 8:32/mi
24M
3:27:12
24.00 mi
Rank: #19149 (+170)
23M → 24M
8:17 | 8:17/mi
40K
3:34:17
24.85 mi
Rank: #18970 (+179)
24M → 40K
7:05 | 8:18/mi
25.2M
3:37:21
25.20 mi
Rank: #18895 (+75)
40K → 25.2M
3:04 | 8:54/mi
FINISH
3:45:17
26.22 mi
Rank: #18694 (+201)
25.2M → FINISH
7:56 | 7:48/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st Half
via HALF
Distance13.11 mi
Time1:54:00
Pace8:42 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:51:17
Pace8:30 /mi
📊Negative Split: 2.4% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:33:4827:258:5027:25
8:50
-
10K
6.21 mi12:00:4154:188:4526:53
8:40
-0:10
15K
9.32 mi12:27:281:21:058:4226:47
8:38
-0:02
20K
12.43 mi12:54:281:48:058:4227:00
8:42
+0:04
HALF
13.11 mi13:00:231:54:008:425:55
8:41
-0:01
25K
15.53 mi13:21:192:14:568:4220:56
8:38
-0:03
30K
18.64 mi13:48:132:41:508:4126:54
8:40
+0:02
20M
20.00 mi13:59:392:53:168:4011:26
8:26
-0:14
21M
21.00 mi14:08:243:02:018:418:45
8:45
+0:19
35K
21.75 mi14:14:383:08:158:406:14
8:20
-0:25
23M
23.00 mi14:25:183:18:558:3910:40
8:32
+0:12
24M
24.00 mi14:33:353:27:128:398:17
8:17
-0:15
40K
24.85 mi14:40:403:34:178:387:05
8:18
+0:01
25.2M
25.20 mi14:43:443:37:218:383:04
8:54
+0:36
FINISH
26.22 mi14:51:403:45:178:367:56
7:48
-1:06

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

7:48 /mi

Average Pace

8:36 /mi

Slowest Pace

8:54 /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

51:38

23% of race

Time at Steady Pace

2:53:39

77% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:36 /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 mi11:33:4827:258:5027:25
8:50
#21814
10K
6.21 mi12:00:4154:188:4526:53
8:40
#21539
15K
9.32 mi12:27:281:21:058:4226:47
8:38
#21273
20K
12.43 mi12:54:281:48:058:4227:00
8:42
#21031
HALF
13.11 mi13:00:231:54:008:425:55
8:41
#21035
25K
15.53 mi13:21:192:14:568:4220:56
8:38
#20764
30K
18.64 mi13:48:132:41:508:4126:54
8:40
#20213
20M
20.00 mi13:59:392:53:168:4011:26
8:26
#19902
21M
21.00 mi14:08:243:02:018:418:45
8:45
#19637
35K
21.75 mi14:14:383:08:158:406:14
8:20
#19538
23M
23.00 mi14:25:183:18:558:3910:40
8:32
#19319
24M
24.00 mi14:33:353:27:128:398:17
8:17
#19149
40K
24.85 mi14:40:403:34:178:387:05
8:18
#18970
25.2M
25.20 mi14:43:443:37:218:383:04
8:54
#18895
FINISH
26.22 mi14:51:403:45:178:367:56
7:48
#18694
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi218148596859620796(Top 72%)8003(Top 64%)8003(Top 448%)
10K6.21 mi3.10 mi21539+2758429+1678429+16721185(Top 73%)8226(Top 65%)8226(Top 461%)
15K9.32 mi3.11 mi21273+2668291+1388291+13820796(Top 72%)8003(Top 64%)8003(Top 448%)
20K12.43 mi3.11 mi21031+2428166+1258166+12520392(Top 70%)7836(Top 62%)7836(Top 439%)
HALF13.11 mi0.68 mi21035-48168-28168-221217(Top 73%)8216(Top 65%)8216(Top 460%)
25K15.53 mi2.42 mi20764+2718039+1298039+12919365(Top 67%)7330(Top 58%)7330(Top 410%)
30K18.64 mi3.11 mi20213+5517763+2767763+27617795(Top 61%)6559(Top 52%)6559(Top 367%)
20M20.00 mi1.36 mi19902+3117621+1427621+14215735(Top 54%)5499(Top 44%)5499(Top 308%)
21M21.00 mi1.00 mi19637+2657499+1227499+12214735(Top 51%)5000(Top 40%)5000(Top 280%)
35K21.75 mi0.75 mi19538+997456+437456+4316690(Top 58%)6154(Top 49%)6154(Top 345%)
23M23.00 mi1.25 mi19319+2197351+1057351+10515897(Top 55%)5790(Top 46%)5790(Top 324%)
24M24.00 mi1.00 mi19149+1707274+777274+7715632(Top 54%)5701(Top 45%)5701(Top 319%)
40K24.85 mi0.85 mi18970+1797187+877187+8714410(Top 50%)5128(Top 41%)5128(Top 287%)
25.2M25.20 mi0.35 mi18895+757156+317156+3114205(Top 49%)5046(Top 40%)5046(Top 283%)
FINISH26.22 mi1.02 mi18694+2017058+987058+9813718(Top 47%)4798(Top 38%)4798(Top 269%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 72%
×21
+97ft-345ft

Overall

20796

Females

8003

F45-49

8003

5K→10K

3.1 - 6.2 mi

Top 73%
×5
+79ft-138ft

Overall

21185

Females

8226

F45-49

8226

10K→15K

6.2 - 9.3 mi

Top 72%
×3
+67ft-78ft

Overall

20796

Females

8003

F45-49

8003

15K→20K

9.3 - 12.4 mi

Top 70%
×5
+106ft-86ft

Overall

20392

Females

7836

F45-49

7836

20K→HALF

12.4 - 13.1 mi

Top 73%
×2
+19ft-37ft

Overall

21217

Females

8216

F45-49

8216

HALF→25K

13.1 - 15.5 mi

Top 67%
×4
+66ft-88ft

Overall

19365

Females

7330

F45-49

7330

25K→30K

15.5 - 18.6 mi

Top 61%
×9
+181ft-148ft

Overall

17795

Females

6559

F45-49

6559

30K→20M

18.6 - 20.0 mi

Top 54%
×5
+64ft-50ft

Overall

15735

Females

5499

F45-49

5499

20M→21M

20.0 - 21.0 mi

Top 51%
×8
+106ft-24ft

Overall

14735

Females

5000

F45-49

5000

21M→35K

21.0 - 21.8 mi

Top 58%
×7
+17ft-86ft

Overall

16690

Females

6154

F45-49

6154

35K→23M

21.8 - 23.0 mi

Top 55%
×5
+23ft-63ft

Overall

15897

Females

5790

F45-49

5790

23M→24M

23.0 - 24.0 mi

Top 54%
×6
+12ft-82ft

Overall

15632

Females

5701

F45-49

5701

24M→40K

24.0 - 24.9 mi

Top 50%
×1
+6ft-20ft

Overall

14410

Females

5128

F45-49

5128

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1
+13ft-16ft

Overall

14205

Females

5046

F45-49

5046

25.2M→FINISH

25.2 - 26.2 mi

Top 47%
×2
+22ft-21ft

Overall

13718

Females

4798

F45-49

4798

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
3504*
Passed By
384
Net Change
+3120
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21814
5K → 10K453*178+275#21814#21539
10K → 15K336*70+266#21539#21273
15K → 20K291*49+242#21273#21031
20K → HALF2428-4#21031#21035
HALF → 25K283*12+271#21035#20764
25K → 30K560*9+551#20764#20213
30K → 20M312*1+311#20213#19902
20M → 21M270*5+265#19902#19637
21M → 35K1023+99#19637#19538
35K → 23M231*12+219#19538#19319
23M → 24M1744+170#19319#19149
24M → 40K1834+179#19149#18970
40K → 25.2M772+75#18970#18895
25.2M → FINISH208*7+201#18895#18694
TOTALS3504*384+3120

* 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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Qualifying & Age Grade

See how your performance stacks up against qualifying standards

OTQ

Olympic Trials Qualifying analysis available

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