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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Chih Yu Chang

Bib: 12607 •F •Age: N/A

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0:00
0:00
/ mi
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Overall
#0 / 29021
Gender (Female)
#0 / 12578
Age Group (F18-39)
#0 / 5716
Race Day Weather
51°/41°F
overcast clouds
Personalized for Chih

Your Race Performance Report is ready

See how your race unfolded, where your performance changed, and what to focus on next.

Personalized by MyRace AI
Preview insight
Your pace by distance
Fastest segment · 7:52/mi at mile 3.1

Your report includes

  • Race Overview
  • Pacing & Splits
  • Performance Analysis
  • Segment Analysis
  • Passing Analysis
  • Improvement Opportunities
One-time purchase · Instant access · Downloadable PDF · Shareable report

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
24:27
3.11 mi
Rank: #16007
Start → 5K
24:27 | 7:53/mi
10K
50:29
6.21 mi
Rank: #17932 (-1925)
5K → 10K
26:02 | 8:23/mi
15K
1:17:00
9.32 mi
Rank: #18774 (-842)
10K → 15K
26:31 | 8:33/mi
20K
1:44:06
12.43 mi
Rank: #19240 (-466)
15K → 20K
27:06 | 8:44/mi
HALF
1:50:17
13.11 mi
Rank: #19446 (-206)
20K → HALF
6:11 | 9:05/mi
25K
2:12:39
15.53 mi
Rank: #19945 (-499)
HALF → 25K
22:22 | 9:14/mi
30K
2:42:24
18.64 mi
Rank: #20401 (-456)
25K → 30K
29:45 | 9:35/mi
20M
2:55:52
20.00 mi
Rank: #20603 (-202)
30K → 20M
13:28 | 9:55/mi
21M
3:06:13
21.00 mi
Rank: #20661 (-58)
20M → 21M
10:21 | 10:21/mi
35K
3:13:39
21.75 mi
Rank: #20774 (-113)
21M → 35K
7:26 | 9:57/mi
23M
3:25:40
23.00 mi
Rank: #20800 (-26)
35K → 23M
12:01 | 9:37/mi
24M
3:34:52
24.00 mi
Rank: #20787 (+13)
23M → 24M
9:12 | 9:12/mi
40K
3:42:53
24.85 mi
Rank: #20757 (+30)
24M → 40K
8:01 | 9:23/mi
25.2M
3:46:22
25.20 mi
Rank: #20749 (+8)
40K → 25.2M
3:29 | 10:07/mi
FINISH
3:55:22
26.22 mi
Rank: #20729 (+20)
25.2M → FINISH
9:00 | 8:50/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:50:17
Pace8:25 /mi
2nd Half
Distance13.11 mi
Time2:05:05
Pace9:33 /mi
📊Positive Split: 13.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:4324:277:5324:27
7:53
-
10K
6.21 mi11:18:4550:298:0826:02
8:23
+0:30
15K
9.32 mi11:45:161:17:008:1626:31
8:33
+0:10
20K
12.43 mi12:12:221:44:068:2327:06
8:44
+0:11
HALF
13.11 mi12:18:331:50:178:256:11
9:05
+0:21
25K
15.53 mi12:40:552:12:398:3322:22
9:14
+0:09
30K
18.64 mi13:10:402:42:248:4329:45
9:35
+0:21
20M
20.00 mi13:24:082:55:528:4813:28
9:55
+0:20
21M
21.00 mi13:34:293:06:138:5310:21
10:21
+0:26
35K
21.75 mi13:41:553:13:398:557:26
9:57
-0:24
23M
23.00 mi13:53:563:25:408:5712:01
9:37
-0:20
24M
24.00 mi14:03:083:34:528:589:12
9:12
-0:25
40K
24.85 mi14:11:093:42:538:598:01
9:23
+0:11
25.2M
25.20 mi14:14:383:46:228:593:29
10:07
+0:44
FINISH
26.22 mi14:23:383:55:229:009:00
8:50
-1:17

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

7:53 /mi

Average Pace

8:59 /mi

Slowest Pace

10:21 /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

1:53:06

48% of race

Time at Steady Pace

45:46

19% of race

Time at Slower Pace

1:16:30

33% of race

Average Pace: 8:59 /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 mi10:52:4324:277:5324:27
7:53
#16007
10K
6.21 mi11:18:4550:298:0826:02
8:23
#17932
15K
9.32 mi11:45:161:17:008:1626:31
8:33
#18774
20K
12.43 mi12:12:221:44:068:2327:06
8:44
#19240
HALF
13.11 mi12:18:331:50:178:256:11
9:05
#19446
25K
15.53 mi12:40:552:12:398:3322:22
9:14
#19945
30K
18.64 mi13:10:402:42:248:4329:45
9:35
#20401
20M
20.00 mi13:24:082:55:528:4813:28
9:55
#20603
21M
21.00 mi13:34:293:06:138:5310:21
10:21
#20661
35K
21.75 mi13:41:553:13:398:557:26
9:57
#20774
23M
23.00 mi13:53:563:25:408:5712:01
9:37
#20800
24M
24.00 mi14:03:083:34:528:589:12
9:12
#20787
40K
24.85 mi14:11:093:42:538:598:01
9:23
#20757
25.2M
25.20 mi14:14:383:46:228:593:29
10:07
#20749
FINISH
26.22 mi14:23:383:55:229:009:00
8:50
#20729
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi160075317531720352(Top 70%)7779(Top 62%)7779(Top 136%)
10K6.21 mi3.10 mi17932-19256460-11436460-114319667(Top 68%)7416(Top 59%)7416(Top 130%)
15K9.32 mi3.11 mi18774-8426919-4596919-45920352(Top 70%)7779(Top 62%)7779(Top 136%)
20K12.43 mi3.11 mi19240-4667194-2757194-27520577(Top 71%)7937(Top 63%)7937(Top 139%)
HALF13.11 mi0.68 mi19446-2067312-1187312-11823049(Top 79%)9179(Top 73%)9179(Top 161%)
25K15.53 mi2.42 mi19945-4997599-2877599-28722125(Top 76%)8742(Top 70%)8742(Top 153%)
30K18.64 mi3.11 mi20401-4567871-2727871-27221884(Top 75%)8708(Top 69%)8708(Top 152%)
20M20.00 mi1.36 mi20603-2027987-1167987-11622337(Top 77%)9027(Top 72%)9027(Top 158%)
21M21.00 mi1.00 mi20661-588019-328019-3221557(Top 74%)8662(Top 69%)8662(Top 152%)
35K21.75 mi0.75 mi20774-1138098-798098-7922984(Top 79%)9438(Top 75%)9438(Top 165%)
23M23.00 mi1.25 mi20800-268119-218119-2120937(Top 72%)8433(Top 67%)8433(Top 148%)
24M24.00 mi1.00 mi20787+138120-18120-120279(Top 70%)8195(Top 65%)8195(Top 143%)
40K24.85 mi0.85 mi20757+308112+88112+819951(Top 69%)8053(Top 64%)8053(Top 141%)
25.2M25.20 mi0.35 mi20749+88113-18113-119802(Top 68%)7978(Top 63%)7978(Top 140%)
FINISH26.22 mi1.02 mi20729+208112+18112+119802(Top 68%)7990(Top 64%)7990(Top 140%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 70%
×21
+97ft-345ft

Overall

20352

Females

7779

F18-39

7779

5K→10K

3.1 - 6.2 mi

Top 68%
×5
+79ft-138ft

Overall

19667

Females

7416

F18-39

7416

10K→15K

6.2 - 9.3 mi

Top 70%
×3
+67ft-78ft

Overall

20352

Females

7779

F18-39

7779

15K→20K

9.3 - 12.4 mi

Top 71%
×5
+106ft-86ft

Overall

20577

Females

7937

F18-39

7937

20K→HALF

12.4 - 13.1 mi

Top 79%
×2
+19ft-37ft

Overall

23049

Females

9179

F18-39

9179

HALF→25K

13.1 - 15.5 mi

Top 76%
×4
+66ft-88ft

Overall

22125

Females

8742

F18-39

8742

25K→30K

15.5 - 18.6 mi

Top 75%
×9
+181ft-148ft

Overall

21884

Females

8708

F18-39

8708

30K→20M

18.6 - 20.0 mi

Top 77%
×5
+64ft-50ft

Overall

22337

Females

9027

F18-39

9027

20M→21M

20.0 - 21.0 mi

Top 74%
×8
+106ft-24ft

Overall

21557

Females

8662

F18-39

8662

21M→35K

21.0 - 21.8 mi

Top 79%
×7
+17ft-86ft

Overall

22984

Females

9438

F18-39

9438

35K→23M

21.8 - 23.0 mi

Top 72%
×5
+23ft-63ft

Overall

20937

Females

8433

F18-39

8433

23M→24M

23.0 - 24.0 mi

Top 70%
×6
+12ft-82ft

Overall

20279

Females

8195

F18-39

8195

24M→40K

24.0 - 24.9 mi

Top 69%
×1
+6ft-20ft

Overall

19951

Females

8053

F18-39

8053

40K→25.2M

24.9 - 25.2 mi

Top 68%
×1
+13ft-16ft

Overall

19802

Females

7978

F18-39

7978

25.2M→FINISH

25.2 - 26.2 mi

Top 68%
×2
+22ft-21ft

Overall

19802

Females

7990

F18-39

7990

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
631
Passed By
1894
Net Change
-4722
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16007
5K → 10K10200-1925#16007#17932
10K → 15K30200-842#17932#18774
15K → 20K55200-466#18774#19240
20K → HALF4200-206#19240#19446
HALF → 25K30200-499#19446#19945
25K → 30K90200-456#19945#20401
30K → 20M44200-202#20401#20603
20M → 21M57115-58#20603#20661
21M → 35K24137-113#20661#20774
35K → 23M6086-26#20774#20800
23M → 24M7158+13#20800#20787
24M → 40K6838+30#20787#20757
40K → 25.2M3022+8#20757#20749
25.2M → FINISH5838+20#20749#20729
TOTALS6311894-4722
📊

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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