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BOSTON MARATHON 2024

Wei Chun Chang

Bib: 12056•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Gender (Male)
#0 / 14578
Masters (Masters Men)
#0 / 9729
Division (M45-49)
#0 / 2218
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:31/mi
23:20
↑ 97↓ 3451.5%
10K· 6.21 mi
8:02/mi
48:17
↑ 79↓ 1380.4%
15K· 9.32 mi
7:38/mi
1:12:00
↑ 67↓ 78
20K· 12.43 mi
7:53/mi
1:36:31
↑ 106↓ 860.1%
Half· 13.11 mi
8:59/mi
1:42:39
↑ 19↓ 370.5%
25K· 15.53 mi
10:24/mi
2:07:52
↑ 66↓ 880.2%
30K· 18.64 mi
10:08/mi
2:39:21
↑ 181↓ 1480.2%
20M
9:19/mi
2:52:01
↑ 64↓ 500.2%
21M
8:48/mi
3:00:49
↑ 106↓ 241.6%
35K· 21.75 mi
7:41/mi
3:06:34
↑ 17↓ 861.7%
23M
8:10/mi
3:16:47
↑ 23↓ 630.6%
24M
8:51/mi
3:25:38
↓ 821.3%
40K· 24.85 mi
8:08/mi
3:32:35
↓ 200.3%
25.2M
9:34/mi
3:35:53
↑ 13↓ 160.2%
Finish· 26.22 mi
8:05/mi
3:44:07
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:39
Pace7:50 /mi
2nd Half
Distance13.11 mi
Time2:01:28
Pace9:16 /mi
📊Positive Split: 18.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:0023:207:3123:20
7:31
-
10K
6.21 mi11:16:5748:177:4624:57
8:02
+0:31
15K
9.32 mi11:40:401:12:007:4323:43
7:38
-0:24
20K
12.43 mi12:05:111:36:317:4624:31
7:53
+0:15
Half
13.11 mi12:11:191:42:397:506:08
8:59
+1:06
25K
15.53 mi12:36:322:07:528:1425:13
10:24
+1:25
30K
18.64 mi13:08:012:39:218:3331:29
10:08
-0:16
20M
20.00 mi13:20:412:52:018:3612:40
9:19
-0:49
21M
21.00 mi13:29:293:00:498:378:48
8:48
-0:31
35K
21.75 mi13:35:143:06:348:355:45
7:41
-1:07
23M
23.00 mi13:45:273:16:478:3310:13
8:10
+0:29
24M
24.00 mi13:54:183:25:388:348:51
8:51
+0:41
40K
24.85 mi14:01:153:32:358:336:57
8:08
-0:43
25.2M
25.20 mi14:04:333:35:538:343:18
9:34
+1:26
Finish
26.22 mi14:12:473:44:078:338:14
8:05
-1:29

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

7:31 /mi

Average Pace

8:33 /mi

Slowest Pace

10:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

52:48

24% of race

Time at Steady Pace

1:14:52

33% of race

Time at Slower Pace

1:36:27

43% of race

Average Pace: 8:33 /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 mi10:52:0023:207:3123:20
7:31
#10840
10K
6.21 mi11:16:5748:177:4624:57
8:02
#12641
15K
9.32 mi11:40:401:12:007:4323:43
7:38
#11935
20K
12.43 mi12:05:111:36:317:4624:31
7:53
#11653
Half
13.11 mi12:11:191:42:397:506:08
8:59
#12091
25K
15.53 mi12:36:322:07:528:1425:13
10:24
#14229
30K
18.64 mi13:08:012:39:218:3331:29
10:08
#15084
20M
20.00 mi13:20:412:52:018:3612:40
9:19
#14989
21M
21.00 mi13:29:293:00:498:378:48
8:48
#14512
35K
21.75 mi13:35:143:06:348:355:45
7:41
#14149
23M
23.00 mi13:45:273:16:478:3310:13
8:10
#13673
24M
24.00 mi13:54:183:25:388:348:51
8:51
#13539
40K
24.85 mi14:01:153:32:358:336:57
8:08
#13222
25.2M
25.20 mi14:04:333:35:538:343:18
9:34
#13129
Finish
26.22 mi14:12:473:44:078:338:14
8:05
#12927
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi108408341834110688(Top 42%)8141(Top 56%)8141(Top 367%)
10K6.21 mi3.10 mi12641-18019088-7479088-74714411(Top 56%)9799(Top 67%)9799(Top 442%)
15K9.32 mi3.11 mi11935+7068738+3508738+35010688(Top 42%)8141(Top 56%)8141(Top 367%)
20K12.43 mi3.11 mi11653+2828599+1398599+13911071(Top 43%)8201(Top 56%)8201(Top 370%)
Half13.11 mi0.68 mi12091-4388788-1898788-18918160(Top 71%)11236(Top 77%)11236(Top 507%)
25K15.53 mi2.42 mi14229-21389666-8789666-87820155(Top 79%)12104(Top 83%)12104(Top 546%)
30K18.64 mi3.11 mi15084-8559921-2559921-25517748(Top 69%)10802(Top 74%)10802(Top 487%)
20M20.00 mi1.36 mi14989+959837+849837+8413701(Top 54%)8713(Top 60%)8713(Top 393%)
21M21.00 mi1.00 mi14512+4779594+2439594+2437623(Top 30%)5609(Top 38%)5609(Top 253%)
35K21.75 mi0.75 mi14149+3639411+1839411+1836027(Top 24%)4709(Top 32%)4709(Top 212%)
23M23.00 mi1.25 mi13673+4769134+2779134+2776586(Top 26%)4856(Top 33%)4856(Top 219%)
24M24.00 mi1.00 mi13539+1349026+1089026+10811360(Top 44%)7249(Top 50%)7249(Top 327%)
40K24.85 mi0.85 mi13222+3178853+1738853+1736429(Top 25%)4575(Top 31%)4575(Top 206%)
25.2M25.20 mi0.35 mi13129+938796+578796+579007(Top 35%)5843(Top 40%)5843(Top 263%)
Finish26.22 mi1.02 mi12927+2028658+1388658+1389033(Top 35%)5945(Top 41%)5945(Top 268%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 42%
×21story building
+97ft-345ft

Overall

10688

Males

8141

M45-49

8141

5K→10K

3.1 - 6.2 mi

Top 56%
×5story building
+79ft-138ft

Overall

14411

Males

9799

M45-49

9799

10K→15K

6.2 - 9.3 mi

Top 42%
×3story building
+67ft-78ft

Overall

10688

Males

8141

M45-49

8141

15K→20K

9.3 - 12.4 mi

Top 43%
×5story building
+106ft-86ft

Overall

11071

Males

8201

M45-49

8201

20K→Half

12.4 - 13.1 mi

Top 71%
×2story building
+19ft-37ft

Overall

18160

Males

11236

M45-49

11236

Half→25K

13.1 - 15.5 mi

Top 79%
×4story building
+66ft-88ft

Overall

20155

Males

12104

M45-49

12104

25K→30K

15.5 - 18.6 mi

Top 69%
×9story building
+181ft-148ft

Overall

17748

Males

10802

M45-49

10802

30K→20M

18.6 - 20.0 mi

Top 54%
×5story building
+64ft-50ft

Overall

13701

Males

8713

M45-49

8713

20M→21M

20.0 - 21.0 mi

Top 30%
×8story building
+106ft-24ft

Overall

7623

Males

5609

M45-49

5609

21M→35K

21.0 - 21.8 mi

Top 24%
×7story building
+17ft-86ft

Overall

6027

Males

4709

M45-49

4709

35K→23M

21.8 - 23.0 mi

Top 26%
×5story building
+23ft-63ft

Overall

6586

Males

4856

M45-49

4856

23M→24M

23.0 - 24.0 mi

Top 44%
×6story building
+12ft-82ft

Overall

11360

Males

7249

M45-49

7249

24M→40K

24.0 - 24.9 mi

Top 25%
×1story
+6ft-20ft

Overall

6429

Males

4575

M45-49

4575

40K→25.2M

24.9 - 25.2 mi

Top 35%
×1story
+13ft-16ft

Overall

9007

Males

5843

M45-49

5843

25.2M→Finish

25.2 - 26.2 mi

Top 35%
×2story building
+22ft-21ft

Overall

9033

Males

5945

M45-49

5945

Passing Analysis

Category:
Athletes Passed
3495
Passed By
5582
Net Change
-2087
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10840
5K → 10K201821-1801#10840#12641
10K → 15K72418+706#12641#11935
15K → 20K36583+282#11935#11653
20K → Half3441-438#11653#12091
Half → 25K212159-2138#12091#14229
25K → 30K87942-855#14229#15084
30K → 20M16772+95#15084#14989
20M → 21M4770+477#14989#14512
21M → 35K3630+363#14512#14149
35K → 23M4771+476#14149#13673
23M → 24M15824+134#13673#13539
24M → 40K3170+317#13539#13222
40K → 25.2M952+93#13222#13129
25.2M → Finish22119+202#13129#12927
TOTALS34955582-2087
📊

Passing Visuals

Category:
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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