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BOSTON MARATHON 2026

Chong Chin Chang

Bib: 19180β€’M

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Gender (Male)
#0 / 16340
Masters (Masters Men)
#0 / 10617
Age Group (M65-69)
#0 / 774
Top 10%
Race Day Weather
51Β°/41Β°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
23:30
3.11 mi
Rank: #13305
Start β†’ 5K
23:30 | 7:34/mi
10K
46:46
6.21 mi
Rank: #13058 (+247)
5K β†’ 10K
23:16 | 7:30/mi
15K
1:10:15
9.32 mi
Rank: #13109 (-51)
10K β†’ 15K
23:29 | 7:34/mi
20K
1:34:20
12.43 mi
Rank: #13362 (-253)
15K β†’ 20K
24:05 | 7:46/mi
HALF
1:39:37
13.11 mi
Rank: #13439 (-77)
20K β†’ HALF
5:17 | 7:46/mi
25K
1:59:57
15.53 mi
Rank: #14253 (-814)
HALF β†’ 25K
20:20 | 8:24/mi
30K
2:27:40
18.64 mi
Rank: #15373 (-1120)
25K β†’ 30K
27:43 | 8:56/mi
20M
2:39:08
20.00 mi
Rank: #15393 (-20)
30K β†’ 20M
11:28 | 8:27/mi
21M
2:48:11
21.00 mi
Rank: #15430 (-37)
20M β†’ 21M
9:03 | 9:03/mi
35K
2:54:25
21.75 mi
Rank: #15459 (-29)
21M β†’ 35K
6:14 | 8:20/mi
23M
3:05:20
23.00 mi
Rank: #15561 (-102)
35K β†’ 23M
10:55 | 8:44/mi
24M
3:15:22
24.00 mi
Rank: #16054 (-493)
23M β†’ 24M
10:02 | 10:02/mi
40K
3:22:50
24.85 mi
Rank: #16071 (-17)
24M β†’ 40K
7:28 | 8:44/mi
25.2M
3:26:04
25.20 mi
Rank: #16070 (+1)
40K β†’ 25.2M
3:14 | 9:23/mi
FINISH
3:34:40
26.22 mi
Rank: #16146 (-76)
25.2M β†’ FINISH
8:36 | 8:27/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:39:37
Pace7:36 /mi
2nd Half
Distance13.11 mi
Time1:55:03
Pace8:47 /mi
πŸ“ŠPositive Split: 15.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:06:5423:307:3423:30
7:34
-
10K
6.21 mi11:30:1046:467:3223:16
7:30
-0:04
15K
9.32 mi11:53:391:10:157:3323:29
7:34
+0:04
20K
12.43 mi12:17:441:34:207:3624:05
7:46
+0:12
HALF
13.11 mi12:23:011:39:377:365:17
7:46
0:00
25K
15.53 mi12:43:211:59:577:4420:20
8:24
+0:38
30K
18.64 mi13:11:042:27:407:5627:43
8:56
+0:32
20M
20.00 mi13:22:322:39:087:5811:28
8:27
-0:29
21M
21.00 mi13:31:352:48:118:019:03
9:03
+0:36
35K
21.75 mi13:37:492:54:258:026:14
8:20
-0:43
23M
23.00 mi13:48:443:05:208:0410:55
8:44
+0:24
24M
24.00 mi13:58:463:15:228:0910:02
10:02
+1:18
40K
24.85 mi14:06:143:22:508:107:28
8:44
-1:18
25.2M
25.20 mi14:09:283:26:048:113:14
9:23
+0:39
FINISH
26.22 mi14:18:043:34:408:128:36
8:27
-0:56

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

πŸ“ˆPace 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

7:30 /mi

Average Pace

8:12 /mi

Slowest Pace

10:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

πŸ“ŠSegments

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

1:39:37

46% of race

Time at Steady Pace

1:05:01

30% of race

Time at Slower Pace

50:02

23% of race

Average Pace: 8:11 /mi

Loading chart...
Faster pace (< avg)
Steady pace (β‰ˆ 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 mi11:06:5423:307:3423:30
7:34
#13305
10K
6.21 mi11:30:1046:467:3223:16
7:30
#13058
15K
9.32 mi11:53:391:10:157:3323:29
7:34
#13109
20K
12.43 mi12:17:441:34:207:3624:05
7:46
#13362
HALF
13.11 mi12:23:011:39:377:365:17
7:46
#13439
25K
15.53 mi12:43:211:59:577:4420:20
8:24
#14253
30K
18.64 mi13:11:042:27:407:5627:43
8:56
#15373
20M
20.00 mi13:22:322:39:087:5811:28
8:27
#15393
21M
21.00 mi13:31:352:48:118:019:03
9:03
#15430
35K
21.75 mi13:37:492:54:258:026:14
8:20
#15459
23M
23.00 mi13:48:443:05:208:0410:55
8:44
#15561
24M
24.00 mi13:58:463:15:228:0910:02
10:02
#16054
40K
24.85 mi14:06:143:22:508:107:28
8:44
#16071
25.2M
25.20 mi14:09:283:26:048:113:14
9:23
#16070
FINISH
26.22 mi14:18:043:34:408:128:36
8:27
#16146
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM65-69Seg. OverallSeg. MalesSeg. M65-69
5K3.11 mi3.11 mi133059589958913306(Top 46%)9507(Top 58%)9507(Top 1228%)
10K6.21 mi3.10 mi13058+2479453+1369453+13612831(Top 44%)9331(Top 57%)9331(Top 1206%)
15K9.32 mi3.11 mi13109-519455-29455-213306(Top 46%)9507(Top 58%)9507(Top 1228%)
20K12.43 mi3.11 mi13362-2539528-739528-7314141(Top 49%)9803(Top 60%)9803(Top 1267%)
HALF13.11 mi0.68 mi13439-779567-399567-3915134(Top 52%)10279(Top 63%)10279(Top 1328%)
25K15.53 mi2.42 mi14253-8149882-3159882-31517878(Top 62%)11312(Top 69%)11312(Top 1461%)
30K18.64 mi3.11 mi15373-112010281-39910281-39919179(Top 66%)11786(Top 72%)11786(Top 1523%)
20M20.00 mi1.36 mi15393-2010271+1010271+1015828(Top 55%)10222(Top 63%)10222(Top 1321%)
21M21.00 mi1.00 mi15430-3710261+1010261+1016357(Top 56%)10406(Top 64%)10406(Top 1344%)
35K21.75 mi0.75 mi15459-2910260+110260+116585(Top 57%)10449(Top 64%)10449(Top 1350%)
23M23.00 mi1.25 mi15561-10210274-1410274-1417020(Top 59%)10513(Top 64%)10513(Top 1358%)
24M24.00 mi1.00 mi16054-49310455-18110455-18122881(Top 79%)13305(Top 81%)13305(Top 1719%)
40K24.85 mi0.85 mi16071-1710453+210453+216993(Top 59%)10411(Top 64%)10411(Top 1345%)
25.2M25.20 mi0.35 mi16070+110441+1210441+1216668(Top 57%)10276(Top 63%)10276(Top 1328%)
FINISH26.22 mi1.02 mi16146-7610446-510446-517809(Top 61%)10794(Top 66%)10794(Top 1395%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
Γ—21
+97ft-345ft

Overall

13306

Males

9507

M65-69

9507

5K→10K

3.1 - 6.2 mi

Top 44%
Γ—5
+79ft-138ft

Overall

12831

Males

9331

M65-69

9331

10K→15K

6.2 - 9.3 mi

Top 46%
Γ—3
+67ft-78ft

Overall

13306

Males

9507

M65-69

9507

15K→20K

9.3 - 12.4 mi

Top 49%
Γ—5
+106ft-86ft

Overall

14141

Males

9803

M65-69

9803

20K→HALF

12.4 - 13.1 mi

Top 52%
Γ—2
+19ft-37ft

Overall

15134

Males

10279

M65-69

10279

HALF→25K

13.1 - 15.5 mi

Top 62%
Γ—4
+66ft-88ft

Overall

17878

Males

11312

M65-69

11312

25K→30K

15.5 - 18.6 mi

Top 66%
Γ—9
+181ft-148ft

Overall

19179

Males

11786

M65-69

11786

30K→20M

18.6 - 20.0 mi

Top 55%
Γ—5
+64ft-50ft

Overall

15828

Males

10222

M65-69

10222

20M→21M

20.0 - 21.0 mi

Top 56%
Γ—8
+106ft-24ft

Overall

16357

Males

10406

M65-69

10406

21M→35K

21.0 - 21.8 mi

Top 57%
Γ—7
+17ft-86ft

Overall

16585

Males

10449

M65-69

10449

35K→23M

21.8 - 23.0 mi

Top 59%
Γ—5
+23ft-63ft

Overall

17020

Males

10513

M65-69

10513

23M→24M

23.0 - 24.0 mi

Top 79%
Γ—6
+12ft-82ft

Overall

22881

Males

13305

M65-69

13305

24M→40K

24.0 - 24.9 mi

Top 59%
Γ—1
+6ft-20ft

Overall

16993

Males

10411

M65-69

10411

40K→25.2M

24.9 - 25.2 mi

Top 57%
Γ—1
+13ft-16ft

Overall

16668

Males

10276

M65-69

10276

25.2M→FINISH

25.2 - 26.2 mi

Top 61%
Γ—2
+22ft-21ft

Overall

17809

Males

10794

M65-69

10794

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1202
Passed By
4043
Net Change
-2841
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start β†’ 5K----#13305
5K β†’ 10K422175+247#13305#13058
10K β†’ 15K177228-51#13058#13109
15K β†’ 20K92345-253#13109#13362
20K β†’ HALF986-77#13362#13439
HALF β†’ 25K25839-814#13439#14253
25K β†’ 30K341154-1120#14253#15373
30K β†’ 20M99119-20#15373#15393
20M β†’ 21M87124-37#15393#15430
21M β†’ 35K5786-29#15430#15459
35K β†’ 23M64166-102#15459#15561
23M β†’ 24M8501-493#15561#16054
24M β†’ 40K5875-17#16054#16071
40K β†’ 25.2M3433+1#16071#16070
25.2M β†’ FINISH36112-76#16070#16146
TOTALS12024043-2841
πŸ“Š

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

πŸ“ˆPosition Graph

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🎨Heatmap Timeline

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πŸ”„Passing Circle

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🌊Position Flow

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πŸƒRace Lanes

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Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing