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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Tzu-Ling Chen

Bib: 21098 •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
Top 49%
Masters (Masters Women)
#0 / 6862
Top 37%
Age Group (F45-49)
#0 / 1786
Top 47%
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
23:00
3.11 mi
Rank: #11989
Start → 5K
23:00 | 7:25/mi
10K
46:39
6.21 mi
Rank: #12915 (-926)
5K → 10K
23:39 | 7:37/mi
15K
1:11:12
9.32 mi
Rank: #13990 (-1075)
10K → 15K
24:33 | 7:55/mi
20K
1:36:35
12.43 mi
Rank: #14927 (-937)
15K → 20K
25:23 | 8:11/mi
HALF
1:41:55
13.11 mi
Rank: #14971 (-44)
20K → HALF
5:20 | 7:50/mi
25K
2:01:57
15.53 mi
Rank: #15346 (-375)
HALF → 25K
20:02 | 8:16/mi
30K
2:29:25
18.64 mi
Rank: #16113 (-767)
25K → 30K
27:28 | 8:51/mi
20M
2:41:59
20.00 mi
Rank: #16465 (-352)
30K → 20M
12:34 | 9:16/mi
21M
2:52:46
21.00 mi
Rank: #16981 (-516)
20M → 21M
10:47 | 10:47/mi
35K
2:59:21
21.75 mi
Rank: #17058 (-77)
21M → 35K
6:35 | 8:48/mi
23M
3:10:02
23.00 mi
Rank: #16969 (+89)
35K → 23M
10:41 | 8:33/mi
24M
3:18:54
24.00 mi
Rank: #17037 (-68)
23M → 24M
8:52 | 8:52/mi
40K
3:26:14
24.85 mi
Rank: #16987 (+50)
24M → 40K
7:20 | 8:35/mi
25.2M
3:29:59
25.20 mi
Rank: #17106 (-119)
40K → 25.2M
3:45 | 10:53/mi
FINISH
3:38:27
26.22 mi
Rank: #17085 (+21)
25.2M → FINISH
8:28 | 8:19/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:41:55
Pace7:47 /mi
2nd Half
Distance13.11 mi
Time1:56:32
Pace8:54 /mi
📊Positive Split: 14.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:08:1423:007:2523:00
7:25
-
10K
6.21 mi11:31:5346:397:3123:39
7:37
+0:12
15K
9.32 mi11:56:261:11:127:3924:33
7:55
+0:18
20K
12.43 mi12:21:491:36:357:4725:23
8:11
+0:16
HALF
13.11 mi12:27:091:41:557:475:20
7:50
-0:21
25K
15.53 mi12:47:112:01:577:5220:02
8:16
+0:26
30K
18.64 mi13:14:392:29:258:0127:28
8:51
+0:35
20M
20.00 mi13:27:132:41:598:0612:34
9:16
+0:25
21M
21.00 mi13:38:002:52:468:1410:47
10:47
+1:31
35K
21.75 mi13:44:352:59:218:156:35
8:48
-1:59
23M
23.00 mi13:55:163:10:028:1610:41
8:33
-0:15
24M
24.00 mi14:04:083:18:548:188:52
8:52
+0:19
40K
24.85 mi14:11:283:26:148:187:20
8:35
-0:17
25.2M
25.20 mi14:15:133:29:598:203:45
10:53
+2:18
FINISH
26.22 mi14:23:413:38:278:218:28
8:19
-2:34

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

7:25 /mi

Average Pace

8:20 /mi

Slowest Pace

10:53 /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

1:16:32

35% of race

Time at Steady Pace

1:54:49

53% of race

Time at Slower Pace

27:06

12% of race

Average Pace: 8:20 /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 mi11:08:1423:007:2523:00
7:25
#11989
10K
6.21 mi11:31:5346:397:3123:39
7:37
#12915
15K
9.32 mi11:56:261:11:127:3924:33
7:55
#13990
20K
12.43 mi12:21:491:36:357:4725:23
8:11
#14927
HALF
13.11 mi12:27:091:41:557:475:20
7:50
#14971
25K
15.53 mi12:47:112:01:577:5220:02
8:16
#15346
30K
18.64 mi13:14:392:29:258:0127:28
8:51
#16113
20M
20.00 mi13:27:132:41:598:0612:34
9:16
#16465
21M
21.00 mi13:38:002:52:468:1410:47
10:47
#16981
35K
21.75 mi13:44:352:59:218:156:35
8:48
#17058
23M
23.00 mi13:55:163:10:028:1610:41
8:33
#16969
24M
24.00 mi14:04:083:18:548:188:52
8:52
#17037
40K
24.85 mi14:11:283:26:148:187:20
8:35
#16987
25.2M
25.20 mi14:15:133:29:598:203:45
10:53
#17106
FINISH
26.22 mi14:23:413:38:278:218:28
8:19
#17085
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 mi119892912291216233(Top 56%)5472(Top 44%)5472(Top 306%)
10K6.21 mi3.10 mi12915-9263463-5513463-55114001(Top 48%)4111(Top 33%)4111(Top 230%)
15K9.32 mi3.11 mi13990-10754115-6524115-65216233(Top 56%)5472(Top 44%)5472(Top 306%)
20K12.43 mi3.11 mi14927-9374699-5844699-58417314(Top 60%)6113(Top 49%)6113(Top 342%)
HALF13.11 mi0.68 mi14971-444723-244723-2415846(Top 55%)5263(Top 42%)5263(Top 295%)
25K15.53 mi2.42 mi15346-3754971-2484971-24817207(Top 59%)6109(Top 49%)6109(Top 342%)
30K18.64 mi3.11 mi16113-7675475-5045475-50418777(Top 65%)7092(Top 56%)7092(Top 397%)
20M20.00 mi1.36 mi16465-3525691-2165691-21620079(Top 69%)7845(Top 62%)7845(Top 439%)
21M21.00 mi1.00 mi16981-5165983-2925983-29222633(Top 78%)9216(Top 73%)9216(Top 516%)
35K21.75 mi0.75 mi17058-776048-656048-6519127(Top 66%)7495(Top 60%)7495(Top 420%)
23M23.00 mi1.25 mi16969+896024+246024+2415947(Top 55%)5819(Top 46%)5819(Top 326%)
24M24.00 mi1.00 mi17037-686083-596083-5918867(Top 65%)7446(Top 59%)7446(Top 417%)
40K24.85 mi0.85 mi16987+506079+46079+416183(Top 56%)6077(Top 48%)6077(Top 340%)
25.2M25.20 mi0.35 mi17106-1196154-756154-7522066(Top 76%)9104(Top 72%)9104(Top 510%)
FINISH26.22 mi1.02 mi17085+216161-76161-717116(Top 59%)6580(Top 52%)6580(Top 368%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 56%
×21
+97ft-345ft

Overall

16233

Females

5472

F45-49

5472

5K→10K

3.1 - 6.2 mi

Top 48%
×5
+79ft-138ft

Overall

14001

Females

4111

F45-49

4111

10K→15K

6.2 - 9.3 mi

Top 56%
×3
+67ft-78ft

Overall

16233

Females

5472

F45-49

5472

15K→20K

9.3 - 12.4 mi

Top 60%
×5
+106ft-86ft

Overall

17314

Females

6113

F45-49

6113

20K→HALF

12.4 - 13.1 mi

Top 55%
×2
+19ft-37ft

Overall

15846

Females

5263

F45-49

5263

HALF→25K

13.1 - 15.5 mi

Top 59%
×4
+66ft-88ft

Overall

17207

Females

6109

F45-49

6109

25K→30K

15.5 - 18.6 mi

Top 65%
×9
+181ft-148ft

Overall

18777

Females

7092

F45-49

7092

30K→20M

18.6 - 20.0 mi

Top 69%
×5
+64ft-50ft

Overall

20079

Females

7845

F45-49

7845

20M→21M

20.0 - 21.0 mi

Top 78%
×8
+106ft-24ft

Overall

22633

Females

9216

F45-49

9216

21M→35K

21.0 - 21.8 mi

Top 66%
×7
+17ft-86ft

Overall

19127

Females

7495

F45-49

7495

35K→23M

21.8 - 23.0 mi

Top 55%
×5
+23ft-63ft

Overall

15947

Females

5819

F45-49

5819

23M→24M

23.0 - 24.0 mi

Top 65%
×6
+12ft-82ft

Overall

18867

Females

7446

F45-49

7446

24M→40K

24.0 - 24.9 mi

Top 56%
×1
+6ft-20ft

Overall

16183

Females

6077

F45-49

6077

40K→25.2M

24.9 - 25.2 mi

Top 76%
×1
+13ft-16ft

Overall

22066

Females

9104

F45-49

9104

25.2M→FINISH

25.2 - 26.2 mi

Top 59%
×2
+22ft-21ft

Overall

17116

Females

6580

F45-49

6580

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
674
Passed By
1959
Net Change
-5096
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11989
5K → 10K42200-926#11989#12915
10K → 15K30200-1075#12915#13990
15K → 20K29200-937#13990#14927
20K → HALF2266-44#14927#14971
HALF → 25K57200-375#14971#15346
25K → 30K57200-767#15346#16113
30K → 20M31200-352#16113#16465
20M → 21M17200-516#16465#16981
21M → 35K38115-77#16981#17058
35K → 23M13748+89#17058#16969
23M → 24M55123-68#16969#17037
24M → 40K8535+50#17037#16987
40K → 25.2M6125-119#16987#17106
25.2M → FINISH6847+21#17106#17085
TOTALS6741959-5096
📊

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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