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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Chilung Chang

Bib: 13750 •M •Age: N/A

Boston Marathon logo
0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Top 37%
Gender (Male)
#0 / 16340
Top 49%
Masters (Masters Men)
#0 / 10617
Top 39%
Age Group (M50-54)
#0 / 1868
Top 41%
Race Day Weather
51°/41°F
overcast clouds
Personalized for Chilung

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 · 7:07/mi at mile 3.1

Your report includes

  • Race Overview
  • Pacing & Splits
  • Performance Analysis
  • Segment Analysis
  • Passing Analysis
  • Potential Focus Areas
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
22:08
3.11 mi
Rank: #9535
Start → 5K
22:08 | 7:08/mi
10K
44:39
6.21 mi
Rank: #10064 (-529)
5K → 10K
22:31 | 7:15/mi
15K
1:07:05
9.32 mi
Rank: #10116 (-52)
10K → 15K
22:26 | 7:14/mi
20K
1:30:02
12.43 mi
Rank: #10299 (-183)
15K → 20K
22:57 | 7:24/mi
HALF
1:35:04
13.11 mi
Rank: #10369 (-70)
20K → HALF
5:02 | 7:24/mi
25K
1:52:46
15.53 mi
Rank: #10232 (+137)
HALF → 25K
17:42 | 7:18/mi
30K
2:16:26
18.64 mi
Rank: #10217 (+15)
25K → 30K
23:40 | 7:38/mi
20M
2:26:53
20.00 mi
Rank: #10209 (+8)
30K → 20M
10:27 | 7:42/mi
21M
2:35:35
21.00 mi
Rank: #10487 (-278)
20M → 21M
8:42 | 8:42/mi
35K
2:41:24
21.75 mi
Rank: #10572 (-85)
21M → 35K
5:49 | 7:47/mi
23M
2:50:59
23.00 mi
Rank: #10494 (+78)
35K → 23M
9:35 | 7:40/mi
24M
2:58:30
24.00 mi
Rank: #10448 (+46)
23M → 24M
7:31 | 7:31/mi
40K
3:05:12
24.85 mi
Rank: #10460 (-12)
24M → 40K
6:42 | 7:51/mi
25.2M
3:08:09
25.20 mi
Rank: #10480 (-20)
40K → 25.2M
2:57 | 8:34/mi
FINISH
3:16:22
26.22 mi
Rank: #10673 (-193)
25.2M → FINISH
8:13 | 8:04/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:35:04
Pace7:16 /mi
2nd Half
Distance13.11 mi
Time1:41:18
Pace7:44 /mi
📊Positive Split: 6.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:1922:087:0822:08
7:08
-
10K
6.21 mi11:13:5044:397:1222:31
7:15
+0:07
15K
9.32 mi11:36:161:07:057:1222:26
7:14
-0:01
20K
12.43 mi11:59:131:30:027:1522:57
7:24
+0:10
HALF
13.11 mi12:04:151:35:047:165:02
7:24
0:00
25K
15.53 mi12:21:571:52:467:1617:42
7:18
-0:06
30K
18.64 mi12:45:372:16:267:2023:40
7:38
+0:20
20M
20.00 mi12:56:042:26:537:2110:27
7:42
+0:04
21M
21.00 mi13:04:462:35:357:258:42
8:42
+1:00
35K
21.75 mi13:10:352:41:247:265:49
7:47
-0:55
23M
23.00 mi13:20:102:50:597:279:35
7:40
-0:07
24M
24.00 mi13:27:412:58:307:277:31
7:31
-0:09
40K
24.85 mi13:34:233:05:127:286:42
7:51
+0:20
25.2M
25.20 mi13:37:203:08:097:282:57
8:34
+0:43
FINISH
26.22 mi13:45:333:16:227:308:13
8:04
-0:30

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

7:08 /mi

Average Pace

7:30 /mi

Slowest Pace

8:42 /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

1:52:46

57% of race

Time at Steady Pace

1:03:44

32% of race

Time at Slower Pace

19:52

10% of race

Average Pace: 7:29 /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 mi10:51:1922:087:0822:08
7:08
#9535
10K
6.21 mi11:13:5044:397:1222:31
7:15
#10064
15K
9.32 mi11:36:161:07:057:1222:26
7:14
#10116
20K
12.43 mi11:59:131:30:027:1522:57
7:24
#10299
HALF
13.11 mi12:04:151:35:047:165:02
7:24
#10369
25K
15.53 mi12:21:571:52:467:1617:42
7:18
#10232
30K
18.64 mi12:45:372:16:267:2023:40
7:38
#10217
20M
20.00 mi12:56:042:26:537:2110:27
7:42
#10209
21M
21.00 mi13:04:462:35:357:258:42
8:42
#10487
35K
21.75 mi13:10:352:41:247:265:49
7:47
#10572
23M
23.00 mi13:20:102:50:597:279:35
7:40
#10494
24M
24.00 mi13:27:412:58:307:277:31
7:31
#10448
40K
24.85 mi13:34:233:05:127:286:42
7:51
#10460
25.2M
25.20 mi13:37:203:08:097:282:57
8:34
#10480
FINISH
26.22 mi13:45:333:16:227:308:13
8:04
#10673
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi95357848784810294(Top 35%)8160(Top 50%)8160(Top 437%)
10K6.21 mi3.10 mi10064-5298105-2578105-25710674(Top 37%)8394(Top 51%)8394(Top 449%)
15K9.32 mi3.11 mi10116-528118-138118-1310294(Top 35%)8160(Top 50%)8160(Top 437%)
20K12.43 mi3.11 mi10299-1838162-448162-4410986(Top 38%)8377(Top 51%)8377(Top 448%)
HALF13.11 mi0.68 mi10369-708195-338195-3311896(Top 41%)8868(Top 54%)8868(Top 475%)
25K15.53 mi2.42 mi10232+1378099+968099+969695(Top 33%)7694(Top 47%)7694(Top 412%)
30K18.64 mi3.11 mi10217+158039+608039+6010568(Top 36%)7988(Top 49%)7988(Top 428%)
20M20.00 mi1.36 mi10209+88001+388001+3810529(Top 36%)7842(Top 48%)7842(Top 420%)
21M21.00 mi1.00 mi10487-2788118-1178118-11714349(Top 49%)9523(Top 58%)9523(Top 510%)
35K21.75 mi0.75 mi10572-858137-198137-1912809(Top 44%)8778(Top 54%)8778(Top 470%)
23M23.00 mi1.25 mi10494+788062+758062+759974(Top 34%)7363(Top 45%)7363(Top 394%)
24M24.00 mi1.00 mi10448+468019+438019+4310202(Top 35%)7398(Top 45%)7398(Top 396%)
40K24.85 mi0.85 mi10460-128008+118008+1111281(Top 39%)7835(Top 48%)7835(Top 419%)
25.2M25.20 mi0.35 mi10480-208008800811906(Top 41%)8047(Top 49%)8047(Top 431%)
FINISH26.22 mi1.02 mi10673-1938083-758083-7515524(Top 53%)9767(Top 60%)9767(Top 523%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21
+97ft-345ft

Overall

10294

Males

8160

M50-54

8160

5K→10K

3.1 - 6.2 mi

Top 37%
×5
+79ft-138ft

Overall

10674

Males

8394

M50-54

8394

10K→15K

6.2 - 9.3 mi

Top 35%
×3
+67ft-78ft

Overall

10294

Males

8160

M50-54

8160

15K→20K

9.3 - 12.4 mi

Top 38%
×5
+106ft-86ft

Overall

10986

Males

8377

M50-54

8377

20K→HALF

12.4 - 13.1 mi

Top 41%
×2
+19ft-37ft

Overall

11896

Males

8868

M50-54

8868

HALF→25K

13.1 - 15.5 mi

Top 33%
×4
+66ft-88ft

Overall

9695

Males

7694

M50-54

7694

25K→30K

15.5 - 18.6 mi

Top 36%
×9
+181ft-148ft

Overall

10568

Males

7988

M50-54

7988

30K→20M

18.6 - 20.0 mi

Top 36%
×5
+64ft-50ft

Overall

10529

Males

7842

M50-54

7842

20M→21M

20.0 - 21.0 mi

Top 49%
×8
+106ft-24ft

Overall

14349

Males

9523

M50-54

9523

21M→35K

21.0 - 21.8 mi

Top 44%
×7
+17ft-86ft

Overall

12809

Males

8778

M50-54

8778

35K→23M

21.8 - 23.0 mi

Top 34%
×5
+23ft-63ft

Overall

9974

Males

7363

M50-54

7363

23M→24M

23.0 - 24.0 mi

Top 35%
×6
+12ft-82ft

Overall

10202

Males

7398

M50-54

7398

24M→40K

24.0 - 24.9 mi

Top 39%
×1
+6ft-20ft

Overall

11281

Males

7835

M50-54

7835

40K→25.2M

24.9 - 25.2 mi

Top 41%
×1
+13ft-16ft

Overall

11906

Males

8047

M50-54

8047

25.2M→FINISH

25.2 - 26.2 mi

Top 53%
×2
+22ft-21ft

Overall

15524

Males

9767

M50-54

9767

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1251*
Passed By
1742
Net Change
-1138
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9535
5K → 10K86200-529#9535#10064
10K → 15K148200-52#10064#10116
15K → 20K110200-183#10116#10299
20K → HALF1181-70#10299#10369
HALF → 25K179*42+137#10369#10232
25K → 30K192176+15#10232#10217
30K → 20M9486+8#10217#10209
20M → 21M42200-278#10209#10487
21M → 35K28113-85#10487#10572
35K → 23M14870+78#10572#10494
23M → 24M9852+46#10494#10448
24M → 40K6476-12#10448#10460
40K → 25.2M2646-20#10460#10480
25.2M → FINISH25200-193#10480#10673
TOTALS1251*1742-1138

* 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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