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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Yu-Yu Tsai

Bib: 21564 •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
Masters (Masters Women)
#0 / 6862
Age Group (F45-49)
#0 / 1786
Race Day Weather
51°/41°F
overcast clouds
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Race Performance Report

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  • Qualification readiness
  • Segment-by-segment breakdown
  • Personalized race insights
  • Downloadable athlete report
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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
25:58
3.11 mi
Rank: #19260
Start → 5K
25:58 | 8:22/mi
10K
51:42
6.21 mi
Rank: #19155 (+105)
5K → 10K
25:44 | 8:17/mi
15K
1:18:32
9.32 mi
Rank: #19726 (-571)
10K → 15K
26:50 | 8:39/mi
20K
1:46:15
12.43 mi
Rank: #20191 (-465)
15K → 20K
27:43 | 8:56/mi
HALF
1:52:09
13.11 mi
Rank: #20228 (-37)
20K → HALF
5:54 | 8:40/mi
25K
2:14:08
15.53 mi
Rank: #20483 (-255)
HALF → 25K
21:59 | 9:04/mi
30K
2:43:35
18.64 mi
Rank: #20718 (-235)
25K → 30K
29:27 | 9:29/mi
20M
2:56:20
20.00 mi
Rank: #20717 (+1)
30K → 20M
12:45 | 9:24/mi
21M
3:06:24
21.00 mi
Rank: #20696 (+21)
20M → 21M
10:04 | 10:04/mi
35K
3:12:56
21.75 mi
Rank: #20628 (+68)
21M → 35K
6:32 | 8:44/mi
23M
3:24:32
23.00 mi
Rank: #20581 (+47)
35K → 23M
11:36 | 9:17/mi
24M
3:33:25
24.00 mi
Rank: #20495 (+86)
23M → 24M
8:53 | 8:53/mi
40K
3:41:07
24.85 mi
Rank: #20418 (+77)
24M → 40K
7:42 | 9:01/mi
25.2M
3:44:39
25.20 mi
Rank: #20405 (+13)
40K → 25.2M
3:32 | 10:15/mi
FINISH
3:53:29
26.22 mi
Rank: #20357 (+48)
25.2M → FINISH
8:50 | 8:41/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:52:09
Pace8:34 /mi
2nd Half
Distance13.11 mi
Time2:01:20
Pace9:16 /mi
📊Positive Split: 8.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:28:2025:588:2225:58
8:22
-
10K
6.21 mi11:54:0451:428:2025:44
8:17
-0:05
15K
9.32 mi12:20:541:18:328:2626:50
8:39
+0:22
20K
12.43 mi12:48:371:46:158:3327:43
8:56
+0:17
HALF
13.11 mi12:54:311:52:098:345:54
8:40
-0:16
25K
15.53 mi13:16:302:14:088:3921:59
9:04
+0:24
30K
18.64 mi13:45:572:43:358:4729:27
9:29
+0:25
20M
20.00 mi13:58:422:56:208:5012:45
9:24
-0:05
21M
21.00 mi14:08:463:06:248:5310:04
10:04
+0:40
35K
21.75 mi14:15:183:12:568:536:32
8:44
-1:20
23M
23.00 mi14:26:543:24:328:5411:36
9:17
+0:33
24M
24.00 mi14:35:473:33:258:548:53
8:53
-0:24
40K
24.85 mi14:43:293:41:078:547:42
9:01
+0:08
25.2M
25.20 mi14:47:013:44:398:553:32
10:15
+1:14
FINISH
26.22 mi14:55:513:53:298:558:50
8:41
-1:34

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

8:17 /mi

Average Pace

8:55 /mi

Slowest Pace

10:15 /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

1:18:32

34% of race

Time at Steady Pace

1:27:33

37% of race

Time at Slower Pace

1:07:24

29% of race

Average Pace: 8:54 /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 mi11:28:2025:588:2225:58
8:22
#19260
10K
6.21 mi11:54:0451:428:2025:44
8:17
#19155
15K
9.32 mi12:20:541:18:328:2626:50
8:39
#19726
20K
12.43 mi12:48:371:46:158:3327:43
8:56
#20191
HALF
13.11 mi12:54:311:52:098:345:54
8:40
#20228
25K
15.53 mi13:16:302:14:088:3921:59
9:04
#20483
30K
18.64 mi13:45:572:43:358:4729:27
9:29
#20718
20M
20.00 mi13:58:422:56:208:5012:45
9:24
#20717
21M
21.00 mi14:08:463:06:248:5310:04
10:04
#20696
35K
21.75 mi14:15:183:12:568:536:32
8:44
#20628
23M
23.00 mi14:26:543:24:328:5411:36
9:17
#20581
24M
24.00 mi14:35:473:33:258:548:53
8:53
#20495
40K
24.85 mi14:43:293:41:078:547:42
9:01
#20418
25.2M
25.20 mi14:47:013:44:398:553:32
10:15
#20405
FINISH
26.22 mi14:55:513:53:298:558:50
8:41
#20357
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 mi192607230723020869(Top 72%)8047(Top 64%)8047(Top 451%)
10K6.21 mi3.10 mi19155+1057156+747156+7419085(Top 66%)7075(Top 56%)7075(Top 396%)
15K9.32 mi3.11 mi19726-5717465-3097465-30920869(Top 72%)8047(Top 64%)8047(Top 451%)
20K12.43 mi3.11 mi20191-4657731-2667731-26621567(Top 74%)8438(Top 67%)8438(Top 472%)
HALF13.11 mi0.68 mi20228-377753-227753-2221134(Top 73%)8185(Top 65%)8185(Top 458%)
25K15.53 mi2.42 mi20483-2557891-1387891-13821465(Top 74%)8391(Top 67%)8391(Top 470%)
30K18.64 mi3.11 mi20718-2358039-1488039-14821559(Top 74%)8548(Top 68%)8548(Top 479%)
20M20.00 mi1.36 mi20717+18041-28041-220637(Top 71%)8154(Top 65%)8154(Top 457%)
21M21.00 mi1.00 mi20696+218037+48037+420661(Top 71%)8190(Top 65%)8190(Top 459%)
35K21.75 mi0.75 mi20628+688013+248013+2418824(Top 65%)7335(Top 58%)7335(Top 411%)
23M23.00 mi1.25 mi20581+478006+78006+719727(Top 68%)7852(Top 62%)7852(Top 440%)
24M24.00 mi1.00 mi20495+867977+297977+2918966(Top 65%)7508(Top 60%)7508(Top 420%)
40K24.85 mi0.85 mi20418+777952+257952+2518475(Top 64%)7308(Top 58%)7308(Top 409%)
25.2M25.20 mi0.35 mi20405+137950+27950+220286(Top 70%)8212(Top 65%)8212(Top 460%)
FINISH26.22 mi1.02 mi20357+487940+107940+1019034(Top 66%)7588(Top 60%)7588(Top 425%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 72%
×21
+97ft-345ft

Overall

20869

Females

8047

F45-49

8047

5K→10K

3.1 - 6.2 mi

Top 66%
×5
+79ft-138ft

Overall

19085

Females

7075

F45-49

7075

10K→15K

6.2 - 9.3 mi

Top 72%
×3
+67ft-78ft

Overall

20869

Females

8047

F45-49

8047

15K→20K

9.3 - 12.4 mi

Top 74%
×5
+106ft-86ft

Overall

21567

Females

8438

F45-49

8438

20K→HALF

12.4 - 13.1 mi

Top 73%
×2
+19ft-37ft

Overall

21134

Females

8185

F45-49

8185

HALF→25K

13.1 - 15.5 mi

Top 74%
×4
+66ft-88ft

Overall

21465

Females

8391

F45-49

8391

25K→30K

15.5 - 18.6 mi

Top 74%
×9
+181ft-148ft

Overall

21559

Females

8548

F45-49

8548

30K→20M

18.6 - 20.0 mi

Top 71%
×5
+64ft-50ft

Overall

20637

Females

8154

F45-49

8154

20M→21M

20.0 - 21.0 mi

Top 71%
×8
+106ft-24ft

Overall

20661

Females

8190

F45-49

8190

21M→35K

21.0 - 21.8 mi

Top 65%
×7
+17ft-86ft

Overall

18824

Females

7335

F45-49

7335

35K→23M

21.8 - 23.0 mi

Top 68%
×5
+23ft-63ft

Overall

19727

Females

7852

F45-49

7852

23M→24M

23.0 - 24.0 mi

Top 65%
×6
+12ft-82ft

Overall

18966

Females

7508

F45-49

7508

24M→40K

24.0 - 24.9 mi

Top 64%
×1
+6ft-20ft

Overall

18475

Females

7308

F45-49

7308

40K→25.2M

24.9 - 25.2 mi

Top 70%
×1
+13ft-16ft

Overall

20286

Females

8212

F45-49

8212

25.2M→FINISH

25.2 - 26.2 mi

Top 66%
×2
+22ft-21ft

Overall

19034

Females

7588

F45-49

7588

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1246*
Passed By
1337
Net Change
-1097
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19260
5K → 10K305*200+105#19260#19155
10K → 15K50200-571#19155#19726
15K → 20K56200-465#19726#20191
20K → HALF1855-37#20191#20228
HALF → 25K67200-255#20228#20483
25K → 30K107200-235#20483#20718
30K → 20M6968+1#20718#20717
20M → 21M8867+21#20717#20696
21M → 35K779+68#20696#20628
35K → 23M9851+47#20628#20581
23M → 24M10418+86#20581#20495
24M → 40K9316+77#20495#20418
40K → 25.2M3118+13#20418#20405
25.2M → FINISH8335+48#20405#20357
TOTALS1246*1337-1097

* 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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Activity Data

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