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BOSTON MARATHON 2026

Chun Chan Chang

Bib: 16068•M

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Top 41%
Gender (Male)
#0 / 16340
Masters (Masters Men)
#0 / 10617
Top 43%
Age Group (M55-59)
#0 / 1491
Top 29%
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
22:59
3.11 mi
Rank: #11897
Start → 5K
22:59 | 7:24/mi
10K
45:25
6.21 mi
Rank: #11156 (+741)
5K → 10K
22:26 | 7:14/mi
15K
1:07:41
9.32 mi
Rank: #10703 (+453)
10K → 15K
22:16 | 7:11/mi
20K
1:30:41
12.43 mi
Rank: #10782 (-79)
15K → 20K
23:00 | 7:25/mi
HALF
1:35:34
13.11 mi
Rank: #10717 (+65)
20K → HALF
4:53 | 7:10/mi
25K
1:54:09
15.53 mi
Rank: #11062 (-345)
HALF → 25K
18:35 | 7:40/mi
30K
2:18:39
18.64 mi
Rank: #11357 (-295)
25K → 30K
24:30 | 7:54/mi
20M
2:29:24
20.00 mi
Rank: #11399 (-42)
30K → 20M
10:45 | 7:55/mi
21M
2:38:07
21.00 mi
Rank: #11556 (-157)
20M → 21M
8:43 | 8:43/mi
35K
2:43:48
21.75 mi
Rank: #11534 (+22)
21M → 35K
5:41 | 7:36/mi
23M
2:53:59
23.00 mi
Rank: #11626 (-92)
35K → 23M
10:11 | 8:09/mi
24M
3:01:36
24.00 mi
Rank: #11565 (+61)
23M → 24M
7:37 | 7:37/mi
40K
3:08:28
24.85 mi
Rank: #11567 (-2)
24M → 40K
6:52 | 8:02/mi
25.2M
3:11:34
25.20 mi
Rank: #11611 (-44)
40K → 25.2M
3:06 | 9:00/mi
FINISH
3:20:14
26.22 mi
Rank: #11927 (-316)
25.2M → FINISH
8:40 | 8:31/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:35:34
Pace7:18 /mi
2nd Half
Distance13.11 mi
Time1:44:40
Pace8:00 /mi
📊Positive Split: 9.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:05:3522:597:2422:59
7:24
-
10K
6.21 mi11:28:0145:257:1922:26
7:14
-0:10
15K
9.32 mi11:50:171:07:417:1622:16
7:11
-0:03
20K
12.43 mi12:13:171:30:417:1823:00
7:25
+0:14
HALF
13.11 mi12:18:101:35:347:184:53
7:10
-0:15
25K
15.53 mi12:36:451:54:097:2118:35
7:40
+0:30
30K
18.64 mi13:01:152:18:397:2724:30
7:54
+0:14
20M
20.00 mi13:12:002:29:247:2910:45
7:55
+0:01
21M
21.00 mi13:20:432:38:077:328:43
8:43
+0:48
35K
21.75 mi13:26:242:43:487:325:41
7:36
-1:07
23M
23.00 mi13:36:352:53:597:3410:11
8:09
+0:33
24M
24.00 mi13:44:123:01:367:357:37
7:37
-0:32
40K
24.85 mi13:51:043:08:287:356:52
8:02
+0:25
25.2M
25.20 mi13:54:103:11:347:373:06
9:00
+0:58
FINISH
26.22 mi14:02:503:20:147:398:40
8:31
-0:29

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

7:10 /mi

Average Pace

7:39 /mi

Slowest Pace

9:00 /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

49:35

25% of race

Time at Steady Pace

1:53:07

56% of race

Time at Slower Pace

37:32

19% of race

Average Pace: 7:38 /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 mi11:05:3522:597:2422:59
7:24
#11897
10K
6.21 mi11:28:0145:257:1922:26
7:14
#11156
15K
9.32 mi11:50:171:07:417:1622:16
7:11
#10703
20K
12.43 mi12:13:171:30:417:1823:00
7:25
#10782
HALF
13.11 mi12:18:101:35:347:184:53
7:10
#10717
25K
15.53 mi12:36:451:54:097:2118:35
7:40
#11062
30K
18.64 mi13:01:152:18:397:2724:30
7:54
#11357
20M
20.00 mi13:12:002:29:247:2910:45
7:55
#11399
21M
21.00 mi13:20:432:38:077:328:43
8:43
#11556
35K
21.75 mi13:26:242:43:487:325:41
7:36
#11534
23M
23.00 mi13:36:352:53:597:3410:11
8:09
#11626
24M
24.00 mi13:44:123:01:367:357:37
7:37
#11565
40K
24.85 mi13:51:043:08:287:356:52
8:02
#11567
25.2M
25.20 mi13:54:103:11:347:373:06
9:00
#11611
FINISH
26.22 mi14:02:503:20:147:398:40
8:31
#11927
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi11897899689969835(Top 34%)7941(Top 49%)7941(Top 533%)
10K6.21 mi3.10 mi11156+7418631+3658631+36510453(Top 36%)8290(Top 51%)8290(Top 556%)
15K9.32 mi3.11 mi10703+4538393+2388393+2389835(Top 34%)7941(Top 49%)7941(Top 533%)
20K12.43 mi3.11 mi10782-798389+48389+411148(Top 38%)8448(Top 52%)8448(Top 567%)
HALF13.11 mi0.68 mi10717+658363+268363+269966(Top 34%)7973(Top 49%)7973(Top 535%)
25K15.53 mi2.42 mi11062-3458502-1398502-13912718(Top 44%)9108(Top 56%)9108(Top 611%)
30K18.64 mi3.11 mi11357-2958592-908592-9012615(Top 43%)8935(Top 55%)8935(Top 599%)
20M20.00 mi1.36 mi11399-428585+78585+712178(Top 42%)8644(Top 53%)8644(Top 580%)
21M21.00 mi1.00 mi11556-1578651-668651-6614446(Top 50%)9563(Top 59%)9563(Top 641%)
35K21.75 mi0.75 mi11534+228627+248627+2411526(Top 40%)8211(Top 50%)8211(Top 551%)
23M23.00 mi1.25 mi11626-928638-118638-1113366(Top 46%)8953(Top 55%)8953(Top 600%)
24M24.00 mi1.00 mi11565+618576+628576+6210958(Top 38%)7779(Top 48%)7779(Top 522%)
40K24.85 mi0.85 mi11567-28538+388538+3812674(Top 44%)8471(Top 52%)8471(Top 568%)
25.2M25.20 mi0.35 mi11611-448545-78545-714573(Top 50%)9311(Top 57%)9311(Top 624%)
FINISH26.22 mi1.02 mi11927-3168662-1178662-11718162(Top 63%)10957(Top 67%)10957(Top 735%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 34%
×21
+97ft-345ft

Overall

9835

Males

7941

M55-59

7941

5K→10K

3.1 - 6.2 mi

Top 36%
×5
+79ft-138ft

Overall

10453

Males

8290

M55-59

8290

10K→15K

6.2 - 9.3 mi

Top 34%
×3
+67ft-78ft

Overall

9835

Males

7941

M55-59

7941

15K→20K

9.3 - 12.4 mi

Top 38%
×5
+106ft-86ft

Overall

11148

Males

8448

M55-59

8448

20K→HALF

12.4 - 13.1 mi

Top 34%
×2
+19ft-37ft

Overall

9966

Males

7973

M55-59

7973

HALF→25K

13.1 - 15.5 mi

Top 44%
×4
+66ft-88ft

Overall

12718

Males

9108

M55-59

9108

25K→30K

15.5 - 18.6 mi

Top 43%
×9
+181ft-148ft

Overall

12615

Males

8935

M55-59

8935

30K→20M

18.6 - 20.0 mi

Top 42%
×5
+64ft-50ft

Overall

12178

Males

8644

M55-59

8644

20M→21M

20.0 - 21.0 mi

Top 50%
×8
+106ft-24ft

Overall

14446

Males

9563

M55-59

9563

21M→35K

21.0 - 21.8 mi

Top 40%
×7
+17ft-86ft

Overall

11526

Males

8211

M55-59

8211

35K→23M

21.8 - 23.0 mi

Top 46%
×5
+23ft-63ft

Overall

13366

Males

8953

M55-59

8953

23M→24M

23.0 - 24.0 mi

Top 38%
×6
+12ft-82ft

Overall

10958

Males

7779

M55-59

7779

24M→40K

24.0 - 24.9 mi

Top 44%
×1
+6ft-20ft

Overall

12674

Males

8471

M55-59

8471

40K→25.2M

24.9 - 25.2 mi

Top 50%
×1
+13ft-16ft

Overall

14573

Males

9311

M55-59

9311

25.2M→FINISH

25.2 - 26.2 mi

Top 63%
×2
+22ft-21ft

Overall

18162

Males

10957

M55-59

10957

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
2169*
Passed By
1619
Net Change
-30
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11897
5K → 10K792*51+741#11897#11156
10K → 15K475*22+453#11156#10703
15K → 20K139200-79#10703#10782
20K → HALF7611+65#10782#10717
HALF → 25K64200-345#10717#11062
25K → 30K113200-295#11062#11357
30K → 20M80122-42#11357#11399
20M → 21M48200-157#11399#11556
21M → 35K6947+22#11556#11534
35K → 23M69161-92#11534#11626
23M → 24M11756+61#11626#11565
24M → 40K7981-2#11565#11567
40K → 25.2M2468-44#11567#11611
25.2M → FINISH24200-316#11611#11927
TOTALS2169*1619-30

* 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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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing