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BOSTON MARATHON 2024

Kung-Chi Chang

Bib: 3760•M

MA

0:00
0:00
/ mi
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Overall
#0 / 25550
Top 9%
Gender (Male)
#0 / 14578
Top 14%
Division (M18-39)
#0 / 4849
Top 32%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:09
Rank: #3219
Start → 5K
20:09 | 6:29/mi
10K· 6.21 mi
40:27
Rank: #3204 (+15)
5K → 10K
20:18 | 6:32/mi
15K· 9.32 mi
1:00:47
Rank: #3097 (+107)
10K → 15K
20:20 | 6:33/mi
20K· 12.43 mi
1:21:06
Rank: #2836 (+261)
15K → 20K
20:19 | 6:32/mi
Half· 13.11 mi
1:25:29
Rank: #2785 (+51)
20K → Half
4:23 | 6:25/mi
25K· 15.53 mi
1:41:33
Rank: #2647 (+138)
Half → 25K
16:04 | 6:38/mi
30K· 18.64 mi
2:02:36
Rank: #2397 (+250)
25K → 30K
21:03 | 6:47/mi
20M
2:11:48
Rank: #2264 (+133)
30K → 20M
9:12 | 6:46/mi
21M
2:19:06
Rank: #2184 (+80)
20M → 21M
7:18 | 7:18/mi
35K· 21.75 mi
2:24:05
Rank: #2139 (+45)
21M → 35K
4:59 | 6:40/mi
23M
2:32:47
Rank: #2058 (+81)
35K → 23M
8:42 | 6:57/mi
24M
2:39:30
Rank: #1986 (+72)
23M → 24M
6:43 | 6:43/mi
40K· 24.85 mi
2:45:43
Rank: #1979 (+7)
24M → 40K
6:13 | 7:16/mi
25.2M
2:48:37
Rank: #1995 (-16)
40K → 25.2M
2:54 | 8:25/mi
Finish· 26.22 mi
2:56:56
Rank: #2205 (-210)
25.2M → Finish
8:19 | 8:10/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:25:29
Pace6:31 /mi
2nd Half
Distance13.11 mi
Time1:31:27
Pace6:59 /mi
📊Positive Split: 7.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:3920:096:2920:09
6:29
-
10K
6.21 mi10:42:5740:276:3120:18
6:32
+0:03
15K
9.32 mi11:03:171:00:476:3120:20
6:33
+0:01
20K
12.43 mi11:23:361:21:066:3220:19
6:32
-0:01
Half
13.11 mi11:27:591:25:296:314:23
6:25
-0:07
25K
15.53 mi11:44:031:41:336:3216:04
6:38
+0:13
30K
18.64 mi12:05:062:02:366:3521:03
6:47
+0:09
20M
20.00 mi12:14:182:11:486:359:12
6:46
-0:01
21M
21.00 mi12:21:362:19:066:377:18
7:18
+0:32
35K
21.75 mi12:26:352:24:056:384:59
6:40
-0:38
23M
23.00 mi12:35:172:32:476:398:42
6:57
+0:17
24M
24.00 mi12:42:002:39:306:396:43
6:43
-0:14
40K
24.85 mi12:48:132:45:436:406:13
7:16
+0:33
25.2M
25.20 mi12:51:072:48:376:412:54
8:25
+1:09
Finish
26.22 mi12:59:262:56:566:458:19
8:10
-0:15

Checkpoints & Pacing

📈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

6:25 /mi

Average Pace

6:45 /mi

Slowest Pace

8:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

4:23

2% of race

Time at Steady Pace

2:27:49

84% of race

Time at Slower Pace

24:44

14% of race

Average Pace: 6:45 /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

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:22:3920:096:2920:09
6:29
#3219
10K
6.21 mi10:42:5740:276:3120:18
6:32
#3204
15K
9.32 mi11:03:171:00:476:3120:20
6:33
#3097
20K
12.43 mi11:23:361:21:066:3220:19
6:32
#2836
Half
13.11 mi11:27:591:25:296:314:23
6:25
#2785
25K
15.53 mi11:44:031:41:336:3216:04
6:38
#2647
30K
18.64 mi12:05:062:02:366:3521:03
6:47
#2397
20M
20.00 mi12:14:182:11:486:359:12
6:46
#2264
21M
21.00 mi12:21:362:19:066:377:18
7:18
#2184
35K
21.75 mi12:26:352:24:056:384:59
6:40
#2139
23M
23.00 mi12:35:172:32:476:398:42
6:57
#2058
24M
24.00 mi12:42:002:39:306:396:43
6:43
#1986
40K
24.85 mi12:48:132:45:436:406:13
7:16
#1979
25.2M
25.20 mi12:51:072:48:376:412:54
8:25
#1995
Finish
26.22 mi12:59:262:56:566:458:19
8:10
#2205
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3219306930692951(Top 12%)2814(Top 19%)2814(Top 58%)
10K6.21 mi3.10 mi3204+153054+153054+153215(Top 13%)3055(Top 21%)3055(Top 63%)
15K9.32 mi3.11 mi3097+1072952+1022952+1022951(Top 12%)2814(Top 19%)2814(Top 58%)
20K12.43 mi3.11 mi2836+2612714+2382714+2382355(Top 9%)2260(Top 16%)2260(Top 47%)
Half13.11 mi0.68 mi2785+512662+522662+522220(Top 9%)2136(Top 15%)2136(Top 44%)
25K15.53 mi2.42 mi2647+1382526+1362526+1362249(Top 9%)2149(Top 15%)2149(Top 44%)
30K18.64 mi3.11 mi2397+2502288+2382288+2381846(Top 7%)1750(Top 12%)1750(Top 36%)
20M20.00 mi1.36 mi2264+1332165+1232165+1231520(Top 6%)1441(Top 10%)1441(Top 30%)
21M21.00 mi1.00 mi2184+802087+782087+781857(Top 7%)1738(Top 12%)1738(Top 36%)
35K21.75 mi0.75 mi2139+452046+412046+411765(Top 7%)1641(Top 11%)1641(Top 34%)
23M23.00 mi1.25 mi2058+811967+791967+791767(Top 7%)1629(Top 11%)1629(Top 34%)
24M24.00 mi1.00 mi1986+721898+691898+691423(Top 6%)1322(Top 9%)1322(Top 27%)
40K24.85 mi0.85 mi1979+71888+101888+102708(Top 11%)2358(Top 16%)2358(Top 49%)
25.2M25.20 mi0.35 mi1995-161903-151903-154033(Top 16%)3170(Top 22%)3170(Top 65%)
Finish26.22 mi1.02 mi2205-2102084-1812084-1819511(Top 37%)6194(Top 42%)6194(Top 128%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21stories
+97ft-345ft

Overall

2951

Males

2814

M18-39

2814

5K→10K

3.1 - 6.2 mi

Top 13%
×5stories
+79ft-138ft

Overall

3215

Males

3055

M18-39

3055

10K→15K

6.2 - 9.3 mi

Top 12%
×3stories
+67ft-78ft

Overall

2951

Males

2814

M18-39

2814

15K→20K

9.3 - 12.4 mi

Top 9%
×5stories
+106ft-86ft

Overall

2355

Males

2260

M18-39

2260

20K→Half

12.4 - 13.1 mi

Top 9%
×2stories
+19ft-37ft

Overall

2220

Males

2136

M18-39

2136

Half→25K

13.1 - 15.5 mi

Top 9%
×4stories
+66ft-88ft

Overall

2249

Males

2149

M18-39

2149

25K→30K

15.5 - 18.6 mi

Top 7%
×9stories
+181ft-148ft

Overall

1846

Males

1750

M18-39

1750

30K→20M

18.6 - 20.0 mi

Top 6%
×5stories
+64ft-50ft

Overall

1520

Males

1441

M18-39

1441

20M→21M

20.0 - 21.0 mi

Top 7%
×8stories
+106ft-24ft

Overall

1857

Males

1738

M18-39

1738

21M→35K

21.0 - 21.8 mi

Top 7%
×7stories
+17ft-86ft

Overall

1765

Males

1641

M18-39

1641

35K→23M

21.8 - 23.0 mi

Top 7%
×5stories
+23ft-63ft

Overall

1767

Males

1629

M18-39

1629

23M→24M

23.0 - 24.0 mi

Top 6%
×6stories
+12ft-82ft

Overall

1423

Males

1322

M18-39

1322

24M→40K

24.0 - 24.9 mi

Top 11%
×1story
+6ft-20ft

Overall

2708

Males

2358

M18-39

2358

40K→25.2M

24.9 - 25.2 mi

Top 16%
×1story
+13ft-16ft

Overall

4033

Males

3170

M18-39

3170

25.2M→Finish

25.2 - 26.2 mi

Top 37%
×2stories
+22ft-21ft

Overall

9511

Males

6194

M18-39

6194

Passing Analysis

Category:
Athletes Passed
1580
Passed By
566
Net Change
+1014
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3219
5K → 10K128113+15#3219#3204
10K → 15K16861+107#3204#3097
15K → 20K27312+261#3097#2836
20K → Half587+51#2836#2785
Half → 25K16224+138#2785#2647
25K → 30K26919+250#2647#2397
30K → 20M1418+133#2397#2264
20M → 21M9818+80#2264#2184
21M → 35K527+45#2184#2139
35K → 23M9312+81#2139#2058
23M → 24M8412+72#2058#1986
24M → 40K3427+7#1986#1979
40K → 25.2M1329-16#1979#1995
25.2M → Finish7217-210#1995#2205
TOTALS1580566+1014
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing