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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Shu Mei Chang

Bib: 22819 •F •Age: N/A

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
Age Group (F50-54)
#0 / 1233
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
29:20
3.11 mi
Rank: #24307
Start → 5K
29:20 | 9:27/mi
10K
58:28
6.21 mi
Rank: #24259 (+48)
5K → 10K
29:08 | 9:23/mi
15K
1:27:42
9.32 mi
Rank: #24250 (+9)
10K → 15K
29:14 | 9:25/mi
20K
2:01:06
12.43 mi
Rank: #24966 (-716)
15K → 20K
33:24 | 10:46/mi
HALF
2:07:21
13.11 mi
Rank: #24897 (+69)
20K → HALF
6:15 | 9:11/mi
25K
2:31:03
15.53 mi
Rank: #24710 (+187)
HALF → 25K
23:42 | 9:47/mi
30K
3:02:16
18.64 mi
Rank: #24412 (+298)
25K → 30K
31:13 | 10:03/mi
20M
3:16:55
20.00 mi
Rank: #24437 (-25)
30K → 20M
14:39 | 10:48/mi
21M
3:28:18
21.00 mi
Rank: #24402 (+35)
20M → 21M
11:23 | 11:23/mi
35K
3:36:11
21.75 mi
Rank: #24401 (+1)
21M → 35K
7:53 | 10:33/mi
23M
3:49:42
23.00 mi
Rank: #24377 (+24)
35K → 23M
13:31 | 10:49/mi
24M
4:00:37
24.00 mi
Rank: #24386 (-9)
23M → 24M
10:55 | 10:55/mi
40K
4:10:02
24.85 mi
Rank: #24372 (+14)
24M → 40K
9:25 | 11:01/mi
25.2M
4:13:47
25.20 mi
Rank: #24345 (+27)
40K → 25.2M
3:45 | 10:53/mi
FINISH
4:24:17
26.22 mi
Rank: #24345
25.2M → FINISH
10:30 | 10:19/mi
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Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time2:07:21
Pace9:43 /mi
2nd Half
Distance13.11 mi
Time2:16:56
Pace10:27 /mi
📊Positive Split: 7.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:32:0029:209:2729:20
9:27
-
10K
6.21 mi12:01:0858:289:2529:08
9:23
-0:04
15K
9.32 mi12:30:221:27:429:2529:14
9:25
+0:02
20K
12.43 mi13:03:462:01:069:4533:24
10:46
+1:21
HALF
13.11 mi13:10:012:07:219:436:15
9:11
-1:35
25K
15.53 mi13:33:432:31:039:4423:42
9:47
+0:36
30K
18.64 mi14:04:563:02:169:4731:13
10:03
+0:16
20M
20.00 mi14:19:353:16:559:5114:39
10:48
+0:45
21M
21.00 mi14:30:583:28:189:5611:23
11:23
+0:35
35K
21.75 mi14:38:513:36:119:577:53
10:33
-0:50
23M
23.00 mi14:52:223:49:4210:0013:31
10:49
+0:16
24M
24.00 mi15:03:174:00:3710:0210:55
10:55
+0:06
40K
24.85 mi15:12:424:10:0210:049:25
11:01
+0:06
25.2M
25.20 mi15:16:274:13:4710:053:45
10:53
-0:08
FINISH
26.22 mi15:26:574:24:1710:0610:30
10:19
-0:34

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

9:11 /mi

Average Pace

10:05 /mi

Slowest Pace

11:23 /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

2:28:52

56% of race

Time at Steady Pace

1:23:42

32% of race

Time at Slower Pace

31:43

12% of race

Average Pace: 10:05 /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 mi11:32:0029:209:2729:20
9:27
#24307
10K
6.21 mi12:01:0858:289:2529:08
9:23
#24259
15K
9.32 mi12:30:221:27:429:2529:14
9:25
#24250
20K
12.43 mi13:03:462:01:069:4533:24
10:46
#24966
HALF
13.11 mi13:10:012:07:219:436:15
9:11
#24897
25K
15.53 mi13:33:432:31:039:4423:42
9:47
#24710
30K
18.64 mi14:04:563:02:169:4731:13
10:03
#24412
20M
20.00 mi14:19:353:16:559:5114:39
10:48
#24437
21M
21.00 mi14:30:583:28:189:5611:23
11:23
#24402
35K
21.75 mi14:38:513:36:119:577:53
10:33
#24401
23M
23.00 mi14:52:223:49:4210:0013:31
10:49
#24377
24M
24.00 mi15:03:174:00:3710:0210:55
10:55
#24386
40K
24.85 mi15:12:424:10:0210:049:25
11:01
#24372
25.2M
25.20 mi15:16:274:13:4710:053:45
10:53
#24345
FINISH
26.22 mi15:26:574:24:1710:0610:30
10:19
#24345
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi243079828982824176(Top 83%)9743(Top 77%)9743(Top 790%)
10K6.21 mi3.10 mi24259+489786+429786+4224211(Top 83%)9772(Top 78%)9772(Top 793%)
15K9.32 mi3.11 mi24250+99771+159771+1524176(Top 83%)9743(Top 77%)9743(Top 790%)
20K12.43 mi3.11 mi24966-71610164-39310164-39326616(Top 92%)11107(Top 88%)11107(Top 901%)
HALF13.11 mi0.68 mi24897+6910131+3310131+3323417(Top 81%)9392(Top 75%)9392(Top 762%)
25K15.53 mi2.42 mi24710+18710039+9210039+9223752(Top 82%)9593(Top 76%)9593(Top 778%)
30K18.64 mi3.11 mi24412+2989913+1269913+12623260(Top 80%)9431(Top 75%)9431(Top 765%)
20M20.00 mi1.36 mi24437-259940-279940-2724483(Top 84%)10177(Top 81%)10177(Top 825%)
21M21.00 mi1.00 mi24402+359935+59935+523939(Top 82%)9939(Top 79%)9939(Top 806%)
35K21.75 mi0.75 mi24401+19945-109945-1024384(Top 84%)10189(Top 81%)10189(Top 826%)
23M23.00 mi1.25 mi24377+249949-49949-424075(Top 83%)10099(Top 80%)10099(Top 819%)
24M24.00 mi1.00 mi24386-99975-269975-2624946(Top 86%)10578(Top 84%)10578(Top 858%)
40K24.85 mi0.85 mi24372+149994-199994-1924296(Top 84%)10282(Top 82%)10282(Top 834%)
25.2M25.20 mi0.35 mi24345+279983+119983+1122121(Top 76%)9159(Top 73%)9159(Top 743%)
FINISH26.22 mi1.02 mi243459991-89991-824610(Top 85%)10425(Top 83%)10425(Top 845%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 83%
×21
+97ft-345ft

Overall

24176

Females

9743

F50-54

9743

5K→10K

3.1 - 6.2 mi

Top 83%
×5
+79ft-138ft

Overall

24211

Females

9772

F50-54

9772

10K→15K

6.2 - 9.3 mi

Top 83%
×3
+67ft-78ft

Overall

24176

Females

9743

F50-54

9743

15K→20K

9.3 - 12.4 mi

Top 92%
×5
+106ft-86ft

Overall

26616

Females

11107

F50-54

11107

20K→HALF

12.4 - 13.1 mi

Top 81%
×2
+19ft-37ft

Overall

23417

Females

9392

F50-54

9392

HALF→25K

13.1 - 15.5 mi

Top 82%
×4
+66ft-88ft

Overall

23752

Females

9593

F50-54

9593

25K→30K

15.5 - 18.6 mi

Top 80%
×9
+181ft-148ft

Overall

23260

Females

9431

F50-54

9431

30K→20M

18.6 - 20.0 mi

Top 84%
×5
+64ft-50ft

Overall

24483

Females

10177

F50-54

10177

20M→21M

20.0 - 21.0 mi

Top 82%
×8
+106ft-24ft

Overall

23939

Females

9939

F50-54

9939

21M→35K

21.0 - 21.8 mi

Top 84%
×7
+17ft-86ft

Overall

24384

Females

10189

F50-54

10189

35K→23M

21.8 - 23.0 mi

Top 83%
×5
+23ft-63ft

Overall

24075

Females

10099

F50-54

10099

23M→24M

23.0 - 24.0 mi

Top 86%
×6
+12ft-82ft

Overall

24946

Females

10578

F50-54

10578

24M→40K

24.0 - 24.9 mi

Top 84%
×1
+6ft-20ft

Overall

24296

Females

10282

F50-54

10282

40K→25.2M

24.9 - 25.2 mi

Top 76%
×1
+13ft-16ft

Overall

22121

Females

9159

F50-54

9159

25.2M→FINISH

25.2 - 26.2 mi

Top 85%
×2
+22ft-21ft

Overall

24610

Females

10425

F50-54

10425

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1404*
Passed By
912
Net Change
-38
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24307
5K → 10K234*186+48#24307#24259
10K → 15K147138+9#24259#24250
15K → 20K14200-716#24250#24966
20K → HALF712+69#24966#24897
HALF → 25K202*15+187#24897#24710
25K → 30K320*22+298#24710#24412
30K → 20M6085-25#24412#24437
20M → 21M6833+35#24437#24402
21M → 35K3736+1#24402#24401
35K → 23M6844+24#24401#24377
23M → 24M4958-9#24377#24386
24M → 40K6147+14#24386#24372
40K → 25.2M358+27#24372#24345
25.2M → FINISH38380#24345#24345
TOTALS1404*912-38

* 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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