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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Chao Lung Chou

Bib: 9627 •M •Age: N/A

Boston Marathon logo
0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Top 29%
Gender (Male)
#0 / 16340
Top 42%
Masters (Masters Men)
#0 / 10617
Top 30%
Age Group (M45-49)
#0 / 2413
Top 45%
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
21:55
3.11 mi
Rank: #8994
Start → 5K
21:55 | 7:04/mi
10K
43:48
6.21 mi
Rank: #8955 (+39)
5K → 10K
21:53 | 7:03/mi
15K
1:05:58
9.32 mi
Rank: #9120 (-165)
10K → 15K
22:10 | 7:09/mi
20K
1:28:15
12.43 mi
Rank: #9101 (+19)
15K → 20K
22:17 | 7:11/mi
HALF
1:33:05
13.11 mi
Rank: #9102 (-1)
20K → HALF
4:50 | 7:06/mi
25K
1:50:34
15.53 mi
Rank: #9049 (+53)
HALF → 25K
17:29 | 7:13/mi
30K
2:13:28
18.64 mi
Rank: #8912 (+137)
25K → 30K
22:54 | 7:23/mi
20M
2:23:33
20.00 mi
Rank: #8845 (+67)
30K → 20M
10:05 | 7:26/mi
21M
2:31:21
21.00 mi
Rank: #8776 (+69)
20M → 21M
7:48 | 7:48/mi
35K
2:36:45
21.75 mi
Rank: #8740 (+36)
21M → 35K
5:24 | 7:14/mi
23M
2:45:58
23.00 mi
Rank: #8627 (+113)
35K → 23M
9:13 | 7:22/mi
24M
2:53:10
24.00 mi
Rank: #8579 (+48)
23M → 24M
7:12 | 7:12/mi
40K
2:59:22
24.85 mi
Rank: #8482 (+97)
24M → 40K
6:12 | 7:16/mi
25.2M
3:02:03
25.20 mi
Rank: #8446 (+36)
40K → 25.2M
2:41 | 7:47/mi
FINISH
3:09:28
26.22 mi
Rank: #8450 (-4)
25.2M → FINISH
7:25 | 7:17/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
Time1:33:05
Pace7:07 /mi
2nd Half
Distance13.11 mi
Time1:36:23
Pace7:22 /mi
📊Positive Split: 3.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:38:2121:557:0421:55
7:04
-
10K
6.21 mi11:00:1443:487:0321:53
7:03
-0:01
15K
9.32 mi11:22:241:05:587:0522:10
7:09
+0:06
20K
12.43 mi11:44:411:28:157:0722:17
7:11
+0:02
HALF
13.11 mi11:49:311:33:057:074:50
7:06
-0:05
25K
15.53 mi12:07:001:50:347:0817:29
7:13
+0:07
30K
18.64 mi12:29:542:13:287:1022:54
7:23
+0:10
20M
20.00 mi12:39:592:23:337:1110:05
7:26
+0:03
21M
21.00 mi12:47:472:31:217:137:48
7:48
+0:22
35K
21.75 mi12:53:112:36:457:135:24
7:14
-0:34
23M
23.00 mi13:02:242:45:587:139:13
7:22
+0:08
24M
24.00 mi13:09:362:53:107:137:12
7:12
-0:10
40K
24.85 mi13:15:482:59:227:136:12
7:16
+0:04
25.2M
25.20 mi13:18:293:02:037:142:41
7:47
+0:31
FINISH
26.22 mi13:25:543:09:287:147:25
7:17
-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

7:03 /mi

Average Pace

7:14 /mi

Slowest Pace

7:48 /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

2:58:59

94% of race

Time at Steady Pace

10:29

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:14 /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 mi10:38:2121:557:0421:55
7:04
#8994
10K
6.21 mi11:00:1443:487:0321:53
7:03
#8955
15K
9.32 mi11:22:241:05:587:0522:10
7:09
#9120
20K
12.43 mi11:44:411:28:157:0722:17
7:11
#9101
HALF
13.11 mi11:49:311:33:057:074:50
7:06
#9102
25K
15.53 mi12:07:001:50:347:0817:29
7:13
#9049
30K
18.64 mi12:29:542:13:287:1022:54
7:23
#8912
20M
20.00 mi12:39:592:23:337:1110:05
7:26
#8845
21M
21.00 mi12:47:472:31:217:137:48
7:48
#8776
35K
21.75 mi12:53:112:36:457:135:24
7:14
#8740
23M
23.00 mi13:02:242:45:587:139:13
7:22
#8627
24M
24.00 mi13:09:362:53:107:137:12
7:12
#8579
40K
24.85 mi13:15:482:59:227:136:12
7:16
#8482
25.2M
25.20 mi13:18:293:02:037:142:41
7:47
#8446
FINISH
26.22 mi13:25:543:09:287:147:25
7:17
#8450
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi8994754775479547(Top 33%)7786(Top 48%)7786(Top 323%)
10K6.21 mi3.10 mi8955+397489+587489+588993(Top 31%)7490(Top 46%)7490(Top 310%)
15K9.32 mi3.11 mi9120-1657582-937582-939547(Top 33%)7786(Top 48%)7786(Top 323%)
20K12.43 mi3.11 mi9101+197548+347548+349124(Top 31%)7485(Top 46%)7485(Top 310%)
HALF13.11 mi0.68 mi9102-17552-47552-49302(Top 32%)7616(Top 47%)7616(Top 316%)
25K15.53 mi2.42 mi9049+537493+597493+598933(Top 31%)7280(Top 45%)7280(Top 302%)
30K18.64 mi3.11 mi8912+1377368+1257368+1258664(Top 30%)6978(Top 43%)6978(Top 289%)
20M20.00 mi1.36 mi8845+677295+737295+738521(Top 29%)6783(Top 42%)6783(Top 281%)
21M21.00 mi1.00 mi8776+697227+687227+688492(Top 29%)6651(Top 41%)6651(Top 276%)
35K21.75 mi0.75 mi8740+367190+377190+378651(Top 30%)6771(Top 41%)6771(Top 281%)
23M23.00 mi1.25 mi8627+1137091+997091+997880(Top 27%)6279(Top 38%)6279(Top 260%)
24M24.00 mi1.00 mi8579+487033+587033+587854(Top 27%)6169(Top 38%)6169(Top 256%)
40K24.85 mi0.85 mi8482+976953+806953+807098(Top 24%)5663(Top 35%)5663(Top 235%)
25.2M25.20 mi0.35 mi8446+366919+346919+346931(Top 24%)5522(Top 34%)5522(Top 229%)
FINISH26.22 mi1.02 mi8450-46896+236896+239682(Top 33%)6954(Top 43%)6954(Top 288%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21
+97ft-345ft

Overall

9547

Males

7786

M45-49

7786

5K→10K

3.1 - 6.2 mi

Top 31%
×5
+79ft-138ft

Overall

8993

Males

7490

M45-49

7490

10K→15K

6.2 - 9.3 mi

Top 33%
×3
+67ft-78ft

Overall

9547

Males

7786

M45-49

7786

15K→20K

9.3 - 12.4 mi

Top 31%
×5
+106ft-86ft

Overall

9124

Males

7485

M45-49

7485

20K→HALF

12.4 - 13.1 mi

Top 32%
×2
+19ft-37ft

Overall

9302

Males

7616

M45-49

7616

HALF→25K

13.1 - 15.5 mi

Top 31%
×4
+66ft-88ft

Overall

8933

Males

7280

M45-49

7280

25K→30K

15.5 - 18.6 mi

Top 30%
×9
+181ft-148ft

Overall

8664

Males

6978

M45-49

6978

30K→20M

18.6 - 20.0 mi

Top 29%
×5
+64ft-50ft

Overall

8521

Males

6783

M45-49

6783

20M→21M

20.0 - 21.0 mi

Top 29%
×8
+106ft-24ft

Overall

8492

Males

6651

M45-49

6651

21M→35K

21.0 - 21.8 mi

Top 30%
×7
+17ft-86ft

Overall

8651

Males

6771

M45-49

6771

35K→23M

21.8 - 23.0 mi

Top 27%
×5
+23ft-63ft

Overall

7880

Males

6279

M45-49

6279

23M→24M

23.0 - 24.0 mi

Top 27%
×6
+12ft-82ft

Overall

7854

Males

6169

M45-49

6169

24M→40K

24.0 - 24.9 mi

Top 24%
×1
+6ft-20ft

Overall

7098

Males

5663

M45-49

5663

40K→25.2M

24.9 - 25.2 mi

Top 24%
×1
+13ft-16ft

Overall

6931

Males

5522

M45-49

5522

25.2M→FINISH

25.2 - 26.2 mi

Top 33%
×2
+22ft-21ft

Overall

9682

Males

6954

M45-49

6954

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1616*
Passed By
1028
Net Change
+544
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8994
5K → 10K234*195+39#8994#8955
10K → 15K79200-165#8955#9120
15K → 20K135116+19#9120#9101
20K → HALF2627-1#9101#9102
HALF → 25K13279+53#9102#9049
25K → 30K228*91+137#9049#8912
30K → 20M12558+67#8912#8845
20M → 21M11849+69#8845#8776
21M → 35K7135+36#8776#8740
35K → 23M15037+113#8740#8627
23M → 24M9749+48#8627#8579
24M → 40K11922+97#8579#8482
40K → 25.2M448+36#8482#8446
25.2M → FINISH5862-4#8446#8450
TOTALS1616*1028+544

* 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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