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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Kung-Chi Chang

Bib: 3645 •M •Age: N/A

MA

Boston Marathon logo
0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Top 12%
Gender (Male)
#0 / 16340
Top 20%
Masters (Masters Men)
#0 / 10617
Top 6%
Age Group (M40-44)
#0 / 2198
Top 18%
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
20:15
3.11 mi
Rank: #4336
Start → 5K
20:15 | 6:32/mi
10K
40:30
6.21 mi
Rank: #4324 (+12)
5K → 10K
20:15 | 6:32/mi
15K
1:00:39
9.32 mi
Rank: #4232 (+92)
10K → 15K
20:09 | 6:30/mi
20K
1:20:53
12.43 mi
Rank: #4110 (+122)
15K → 20K
20:14 | 6:31/mi
HALF
1:25:17
13.11 mi
Rank: #4109 (+1)
20K → HALF
4:24 | 6:28/mi
25K
1:41:09
15.53 mi
Rank: #4016 (+93)
HALF → 25K
15:52 | 6:33/mi
30K
2:01:43
18.64 mi
Rank: #3826 (+190)
25K → 30K
20:34 | 6:38/mi
20M
2:10:46
20.00 mi
Rank: #3730 (+96)
30K → 20M
9:03 | 6:40/mi
21M
2:17:43
21.00 mi
Rank: #3673 (+57)
20M → 21M
6:57 | 6:57/mi
35K
2:22:34
21.75 mi
Rank: #3641 (+32)
21M → 35K
4:51 | 6:29/mi
23M
2:30:47
23.00 mi
Rank: #3549 (+92)
35K → 23M
8:13 | 6:34/mi
24M
2:37:14
24.00 mi
Rank: #3484 (+65)
23M → 24M
6:27 | 6:27/mi
40K
2:42:52
24.85 mi
Rank: #3430 (+54)
24M → 40K
5:38 | 6:36/mi
25.2M
2:45:21
25.20 mi
Rank: #3404 (+26)
40K → 25.2M
2:29 | 7:13/mi
FINISH
2:51:57
26.22 mi
Rank: #3386 (+18)
25.2M → FINISH
6:36 | 6:29/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:25:17
Pace6:31 /mi
2nd Half
Distance13.11 mi
Time1:26:40
Pace6:37 /mi
📊Positive Split: 1.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:0920:156:3220:15
6:32
-
10K
6.21 mi10:43:2440:306:3220:15
6:32
0:00
15K
9.32 mi11:03:331:00:396:3120:09
6:30
-0:02
20K
12.43 mi11:23:471:20:536:3120:14
6:31
+0:01
HALF
13.11 mi11:28:111:25:176:314:24
6:28
-0:03
25K
15.53 mi11:44:031:41:096:3115:52
6:33
+0:05
30K
18.64 mi12:04:372:01:436:3220:34
6:38
+0:05
20M
20.00 mi12:13:402:10:466:339:03
6:40
+0:02
21M
21.00 mi12:20:372:17:436:346:57
6:57
+0:17
35K
21.75 mi12:25:282:22:346:344:51
6:29
-0:28
23M
23.00 mi12:33:412:30:476:348:13
6:34
+0:05
24M
24.00 mi12:40:082:37:146:346:27
6:27
-0:07
40K
24.85 mi12:45:462:42:526:345:38
6:36
+0:09
25.2M
25.20 mi12:48:152:45:216:342:29
7:13
+0:37
FINISH
26.22 mi12:54:512:51:576:346:36
6:29
-0:44

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

6:27 /mi

Average Pace

6:34 /mi

Slowest Pace

7:13 /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

2:49:28

99% of race

Time at Steady Pace

2:29

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:33 /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 mi10:23:0920:156:3220:15
6:32
#4336
10K
6.21 mi10:43:2440:306:3220:15
6:32
#4324
15K
9.32 mi11:03:331:00:396:3120:09
6:30
#4232
20K
12.43 mi11:23:471:20:536:3120:14
6:31
#4110
HALF
13.11 mi11:28:111:25:176:314:24
6:28
#4109
25K
15.53 mi11:44:031:41:096:3115:52
6:33
#4016
30K
18.64 mi12:04:372:01:436:3220:34
6:38
#3826
20M
20.00 mi12:13:402:10:466:339:03
6:40
#3730
21M
21.00 mi12:20:372:17:436:346:57
6:57
#3673
35K
21.75 mi12:25:282:22:346:344:51
6:29
#3641
23M
23.00 mi12:33:412:30:476:348:13
6:34
#3549
24M
24.00 mi12:40:082:37:146:346:27
6:27
#3484
40K
24.85 mi12:45:462:42:526:345:38
6:36
#3430
25.2M
25.20 mi12:48:152:45:216:342:29
7:13
#3404
FINISH
26.22 mi12:54:512:51:576:346:36
6:29
#3386
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi4336409940994110(Top 14%)3896(Top 24%)3896(Top 177%)
10K6.21 mi3.10 mi4324+124091+84091+84367(Top 15%)4124(Top 25%)4124(Top 188%)
15K9.32 mi3.11 mi4232+924011+804011+804110(Top 14%)3896(Top 24%)3896(Top 177%)
20K12.43 mi3.11 mi4110+1223904+1073904+1073843(Top 13%)3648(Top 22%)3648(Top 166%)
HALF13.11 mi0.68 mi4109+13899+53899+54061(Top 14%)3840(Top 24%)3840(Top 175%)
25K15.53 mi2.42 mi4016+933812+873812+873711(Top 13%)3510(Top 21%)3510(Top 160%)
30K18.64 mi3.11 mi3826+1903636+1763636+1763231(Top 11%)3054(Top 19%)3054(Top 139%)
20M20.00 mi1.36 mi3730+963540+963540+963252(Top 11%)3038(Top 19%)3038(Top 138%)
21M21.00 mi1.00 mi3673+573487+533487+533172(Top 11%)2942(Top 18%)2942(Top 134%)
35K21.75 mi0.75 mi3641+323452+353452+353470(Top 12%)3199(Top 20%)3199(Top 146%)
23M23.00 mi1.25 mi3549+923365+873365+872740(Top 9%)2559(Top 16%)2559(Top 116%)
24M24.00 mi1.00 mi3484+653308+573308+572894(Top 10%)2646(Top 16%)2646(Top 120%)
40K24.85 mi0.85 mi3430+543250+583250+582990(Top 10%)2719(Top 17%)2719(Top 124%)
25.2M25.20 mi0.35 mi3404+263225+253225+253535(Top 12%)3112(Top 19%)3112(Top 142%)
FINISH26.22 mi1.02 mi3386+183202+233202+233973(Top 14%)3446(Top 21%)3446(Top 157%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 14%
×21
+97ft-345ft

Overall

4110

Males

3896

M40-44

3896

5K→10K

3.1 - 6.2 mi

Top 15%
×5
+79ft-138ft

Overall

4367

Males

4124

M40-44

4124

10K→15K

6.2 - 9.3 mi

Top 14%
×3
+67ft-78ft

Overall

4110

Males

3896

M40-44

3896

15K→20K

9.3 - 12.4 mi

Top 13%
×5
+106ft-86ft

Overall

3843

Males

3648

M40-44

3648

20K→HALF

12.4 - 13.1 mi

Top 14%
×2
+19ft-37ft

Overall

4061

Males

3840

M40-44

3840

HALF→25K

13.1 - 15.5 mi

Top 13%
×4
+66ft-88ft

Overall

3711

Males

3510

M40-44

3510

25K→30K

15.5 - 18.6 mi

Top 11%
×9
+181ft-148ft

Overall

3231

Males

3054

M40-44

3054

30K→20M

18.6 - 20.0 mi

Top 11%
×5
+64ft-50ft

Overall

3252

Males

3038

M40-44

3038

20M→21M

20.0 - 21.0 mi

Top 11%
×8
+106ft-24ft

Overall

3172

Males

2942

M40-44

2942

21M→35K

21.0 - 21.8 mi

Top 12%
×7
+17ft-86ft

Overall

3470

Males

3199

M40-44

3199

35K→23M

21.8 - 23.0 mi

Top 9%
×5
+23ft-63ft

Overall

2740

Males

2559

M40-44

2559

23M→24M

23.0 - 24.0 mi

Top 10%
×6
+12ft-82ft

Overall

2894

Males

2646

M40-44

2646

24M→40K

24.0 - 24.9 mi

Top 10%
×1
+6ft-20ft

Overall

2990

Males

2719

M40-44

2719

40K→25.2M

24.9 - 25.2 mi

Top 12%
×1
+13ft-16ft

Overall

3535

Males

3112

M40-44

3112

25.2M→FINISH

25.2 - 26.2 mi

Top 14%
×2
+22ft-21ft

Overall

3973

Males

3446

M40-44

3446

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1391*
Passed By
441
Net Change
+950
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4336
5K → 10K155143+12#4336#4324
10K → 15K16977+92#4324#4232
15K → 20K15331+122#4232#4110
20K → HALF1514+1#4110#4109
HALF → 25K11522+93#4109#4016
25K → 30K209*19+190#4016#3826
30K → 20M11620+96#3826#3730
20M → 21M7013+57#3730#3673
21M → 35K419+32#3673#3641
35K → 23M10311+92#3641#3549
23M → 24M8116+65#3549#3484
24M → 40K6713+54#3484#3430
40K → 25.2M3711+26#3430#3404
25.2M → FINISH6042+18#3404#3386
TOTALS1391*441+950

* 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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