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BOSTON MARATHON 2024

Chuanfeng Song

Bib: 11794•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Top 15%
Gender (Male)
#0 / 14578
Top 25%
Masters (Masters Men)
#0 / 9729
Top 13%
Division (M55-59)
#0 / 1529
Top 4%
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
6:44/mi
20:55
↑ 97↓ 3451.5%
10K· 6.21 mi
6:42/mi
41:44
↑ 79↓ 1380.4%
15K· 9.32 mi
6:50/mi
1:02:58
↑ 67↓ 78
20K· 12.43 mi
6:58/mi
1:24:36
↑ 106↓ 860.1%
Half· 13.11 mi
6:53/mi
1:29:18
↑ 19↓ 370.5%
25K· 15.53 mi
7:06/mi
1:46:31
↑ 66↓ 880.2%
30K· 18.64 mi
7:23/mi
2:09:26
↑ 181↓ 1480.2%
20M
7:27/mi
2:19:33
↑ 64↓ 500.2%
21M
7:57/mi
2:27:30
↑ 106↓ 241.6%
35K· 21.75 mi
7:18/mi
2:32:58
↑ 17↓ 861.7%
23M
7:31/mi
2:42:23
↑ 23↓ 630.6%
24M
7:23/mi
2:49:46
↓ 821.3%
40K· 24.85 mi
7:30/mi
2:56:11
↓ 200.3%
25.2M
8:22/mi
2:59:04
↑ 13↓ 160.2%
Finish· 26.22 mi
7:14/mi
3:06:26
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:18
Pace6:49 /mi
2nd Half
Distance13.11 mi
Time1:37:08
Pace7:25 /mi
📊Positive Split: 8.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:1020:556:4420:55
6:44
-
10K
6.21 mi11:08:5941:446:4320:49
6:42
-0:02
15K
9.32 mi11:30:131:02:586:4521:14
6:50
+0:08
20K
12.43 mi11:51:511:24:366:4821:38
6:58
+0:08
Half
13.11 mi11:56:331:29:186:494:42
6:53
-0:05
25K
15.53 mi12:13:461:46:316:5117:13
7:06
+0:13
30K
18.64 mi12:36:412:09:266:5722:55
7:23
+0:17
20M
20.00 mi12:46:482:19:336:5910:07
7:27
+0:04
21M
21.00 mi12:54:452:27:307:017:57
7:57
+0:30
35K
21.75 mi13:00:132:32:587:025:28
7:18
-0:39
23M
23.00 mi13:09:382:42:237:049:25
7:31
+0:13
24M
24.00 mi13:17:012:49:467:047:23
7:23
-0:08
40K
24.85 mi13:23:262:56:117:056:25
7:30
+0:07
25.2M
25.20 mi13:26:192:59:047:062:53
8:22
+0:52
Finish
26.22 mi13:33:413:06:267:077:22
7:14
-1:08

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

6:42 /mi

Average Pace

7:07 /mi

Slowest Pace

8:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:29:18

48% of race

Time at Steady Pace

1:26:18

46% of race

Time at Slower Pace

10:50

6% of race

Average Pace: 7:07 /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 mi10:48:1020:556:4420:55
6:44
#5084
10K
6.21 mi11:08:5941:446:4320:49
6:42
#4687
15K
9.32 mi11:30:131:02:586:4521:14
6:50
#4776
20K
12.43 mi11:51:511:24:366:4821:38
6:58
#4808
Half
13.11 mi11:56:331:29:186:494:42
6:53
#4820
25K
15.53 mi12:13:461:46:316:5117:13
7:06
#4790
30K
18.64 mi12:36:412:09:266:5722:55
7:23
#4687
20M
20.00 mi12:46:482:19:336:5910:07
7:27
#4554
21M
21.00 mi12:54:452:27:307:017:57
7:57
#4448
35K
21.75 mi13:00:132:32:587:025:28
7:18
#4384
23M
23.00 mi13:09:382:42:237:049:25
7:31
#4228
24M
24.00 mi13:17:012:49:467:047:23
7:23
#4117
40K
24.85 mi13:23:262:56:117:056:25
7:30
#4035
25.2M
25.20 mi13:26:192:59:047:062:53
8:22
#3997
Finish
26.22 mi13:33:413:06:267:077:22
7:14
#3957
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi5084470747075045(Top 20%)4640(Top 32%)4640(Top 303%)
10K6.21 mi3.10 mi4687+3974369+3384369+3384312(Top 17%)4042(Top 28%)4042(Top 264%)
15K9.32 mi3.11 mi4776-894440-714440-715045(Top 20%)4640(Top 32%)4640(Top 303%)
20K12.43 mi3.11 mi4808-324458-184458-185007(Top 20%)4575(Top 31%)4575(Top 299%)
Half13.11 mi0.68 mi4820-124468-104468-105061(Top 20%)4604(Top 32%)4604(Top 301%)
25K15.53 mi2.42 mi4790+304424+444424+444804(Top 19%)4325(Top 30%)4325(Top 283%)
30K18.64 mi3.11 mi4687+1034308+1164308+1164516(Top 18%)4003(Top 27%)4003(Top 262%)
20M20.00 mi1.36 mi4554+1334187+1214187+1214095(Top 16%)3618(Top 25%)3618(Top 237%)
21M21.00 mi1.00 mi4448+1064082+1054082+1053971(Top 16%)3418(Top 23%)3418(Top 224%)
35K21.75 mi0.75 mi4384+644018+644018+644179(Top 16%)3582(Top 25%)3582(Top 234%)
23M23.00 mi1.25 mi4228+1563864+1543864+1543700(Top 14%)3173(Top 22%)3173(Top 208%)
24M24.00 mi1.00 mi4117+1113749+1153749+1153670(Top 14%)3101(Top 21%)3101(Top 203%)
40K24.85 mi0.85 mi4035+823669+803669+803516(Top 14%)2899(Top 20%)2899(Top 190%)
25.2M25.20 mi0.35 mi3997+383630+393630+393898(Top 15%)3099(Top 21%)3099(Top 203%)
Finish26.22 mi1.02 mi3957+403578+523578+524134(Top 16%)3289(Top 23%)3289(Top 215%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 20%
×21story building
+97ft-345ft

Overall

5045

Males

4640

M55-59

4640

5K→10K

3.1 - 6.2 mi

Top 17%
×5story building
+79ft-138ft

Overall

4312

Males

4042

M55-59

4042

10K→15K

6.2 - 9.3 mi

Top 20%
×3story building
+67ft-78ft

Overall

5045

Males

4640

M55-59

4640

15K→20K

9.3 - 12.4 mi

Top 20%
×5story building
+106ft-86ft

Overall

5007

Males

4575

M55-59

4575

20K→Half

12.4 - 13.1 mi

Top 20%
×2story building
+19ft-37ft

Overall

5061

Males

4604

M55-59

4604

Half→25K

13.1 - 15.5 mi

Top 19%
×4story building
+66ft-88ft

Overall

4804

Males

4325

M55-59

4325

25K→30K

15.5 - 18.6 mi

Top 18%
×9story building
+181ft-148ft

Overall

4516

Males

4003

M55-59

4003

30K→20M

18.6 - 20.0 mi

Top 16%
×5story building
+64ft-50ft

Overall

4095

Males

3618

M55-59

3618

20M→21M

20.0 - 21.0 mi

Top 16%
×8story building
+106ft-24ft

Overall

3971

Males

3418

M55-59

3418

21M→35K

21.0 - 21.8 mi

Top 16%
×7story building
+17ft-86ft

Overall

4179

Males

3582

M55-59

3582

35K→23M

21.8 - 23.0 mi

Top 14%
×5story building
+23ft-63ft

Overall

3700

Males

3173

M55-59

3173

23M→24M

23.0 - 24.0 mi

Top 14%
×6story building
+12ft-82ft

Overall

3670

Males

3101

M55-59

3101

24M→40K

24.0 - 24.9 mi

Top 14%
×1story
+6ft-20ft

Overall

3516

Males

2899

M55-59

2899

40K→25.2M

24.9 - 25.2 mi

Top 15%
×1story
+13ft-16ft

Overall

3898

Males

3099

M55-59

3099

25.2M→Finish

25.2 - 26.2 mi

Top 16%
×2story building
+22ft-21ft

Overall

4134

Males

3289

M55-59

3289

Passing Analysis

Category:
Athletes Passed
2053
Passed By
926
Net Change
+1127
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5084
5K → 10K43841+397#5084#4687
10K → 15K103192-89#4687#4776
15K → 20K166198-32#4776#4808
20K → Half2739-12#4808#4820
Half → 25K188158+30#4820#4790
25K → 30K236133+103#4790#4687
30K → 20M15724+133#4687#4554
20M → 21M13428+106#4554#4448
21M → 35K8521+64#4448#4384
35K → 23M17822+156#4384#4228
23M → 24M12615+111#4228#4117
24M → 40K9513+82#4117#4035
40K → 25.2M4911+38#4035#3997
25.2M → Finish7131+40#3997#3957
TOTALS2053926+1127
📊

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