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BOSTON MARATHON 2024

Junfeng Zhang

Bib: 4704•M

WA

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Top 16%
Gender (Male)
#0 / 14578
Top 26%
Masters (Masters Men)
#0 / 9729
Top 14%
Division (M45-49)
#0 / 2218
Top 18%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:55
Rank: #5085
Start → 5K
20:55 | 6:44/mi
10K· 6.21 mi
41:43
Rank: #4666 (+419)
5K → 10K
20:48 | 6:42/mi
15K· 9.32 mi
1:02:37
Rank: #4461 (+205)
10K → 15K
20:54 | 6:44/mi
20K· 12.43 mi
1:23:54
Rank: #4348 (+113)
15K → 20K
21:17 | 6:51/mi
Half· 13.11 mi
1:28:32
Rank: #4349 (-1)
20K → Half
4:38 | 6:47/mi
25K· 15.53 mi
1:45:30
Rank: #4295 (+54)
Half → 25K
16:58 | 7:00/mi
30K· 18.64 mi
2:07:59
Rank: #4190 (+105)
25K → 30K
22:29 | 7:14/mi
20M
2:18:12
Rank: #4167 (+23)
30K → 20M
10:13 | 7:31/mi
21M
2:26:26
Rank: #4152 (+15)
20M → 21M
8:14 | 8:14/mi
35K· 21.75 mi
2:31:49
Rank: #4092 (+60)
21M → 35K
5:23 | 7:12/mi
23M
2:41:25
Rank: #4023 (+69)
35K → 23M
9:36 | 7:40/mi
24M
2:49:06
Rank: #3993 (+30)
23M → 24M
7:41 | 7:41/mi
40K· 24.85 mi
2:56:03
Rank: #4010 (-17)
24M → 40K
6:57 | 8:08/mi
25.2M
2:59:22
Rank: #4070 (-60)
40K → 25.2M
3:19 | 9:37/mi
Finish· 26.22 mi
3:07:32
Rank: #4165 (-95)
25.2M → Finish
8:10 | 8:01/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:32
Pace6:45 /mi
2nd Half
Distance13.11 mi
Time1:39:00
Pace7:33 /mi
📊Positive Split: 11.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:3720:556:4420:55
6:44
-
10K
6.21 mi10:45:2541:436:4320:48
6:42
-0:02
15K
9.32 mi11:06:191:02:376:4320:54
6:44
+0:02
20K
12.43 mi11:27:361:23:546:4521:17
6:51
+0:07
Half
13.11 mi11:32:141:28:326:454:38
6:47
-0:04
25K
15.53 mi11:49:121:45:306:4716:58
7:00
+0:13
30K
18.64 mi12:11:412:07:596:5222:29
7:14
+0:14
20M
20.00 mi12:21:542:18:126:5510:13
7:31
+0:17
21M
21.00 mi12:30:082:26:266:588:14
8:14
+0:43
35K
21.75 mi12:35:312:31:496:595:23
7:12
-1:02
23M
23.00 mi12:45:072:41:257:019:36
7:40
+0:28
24M
24.00 mi12:52:482:49:067:037:41
7:41
+0:01
40K
24.85 mi12:59:452:56:037:056:57
8:08
+0:27
25.2M
25.20 mi13:03:042:59:227:073:19
9:37
+1:29
Finish
26.22 mi13:11:143:07:327:098:10
8:01
-1:36

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

7:09 /mi

Slowest Pace

9:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:07:15

36% of race

Time at Steady Pace

1:16:20

41% of race

Time at Slower Pace

43:57

23% of race

Average Pace: 7:09 /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 mi10:24:3720:556:4420:55
6:44
#5085
10K
6.21 mi10:45:2541:436:4320:48
6:42
#4666
15K
9.32 mi11:06:191:02:376:4320:54
6:44
#4461
20K
12.43 mi11:27:361:23:546:4521:17
6:51
#4348
Half
13.11 mi11:32:141:28:326:454:38
6:47
#4349
25K
15.53 mi11:49:121:45:306:4716:58
7:00
#4295
30K
18.64 mi12:11:412:07:596:5222:29
7:14
#4190
20M
20.00 mi12:21:542:18:126:5510:13
7:31
#4167
21M
21.00 mi12:30:082:26:266:588:14
8:14
#4152
35K
21.75 mi12:35:312:31:496:595:23
7:12
#4092
23M
23.00 mi12:45:072:41:257:019:36
7:40
#4023
24M
24.00 mi12:52:482:49:067:037:41
7:41
#3993
40K
24.85 mi12:59:452:56:037:056:57
8:08
#4010
25.2M
25.20 mi13:03:042:59:227:073:19
9:37
#4070
Finish
26.22 mi13:11:143:07:327:098:10
8:01
#4165
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi5085470847084115(Top 16%)3863(Top 26%)3863(Top 174%)
10K6.21 mi3.10 mi4666+4194352+3564352+3564285(Top 17%)4019(Top 28%)4019(Top 181%)
15K9.32 mi3.11 mi4461+2054170+1824170+1824115(Top 16%)3863(Top 26%)3863(Top 174%)
20K12.43 mi3.11 mi4348+1134058+1124058+1124254(Top 17%)3953(Top 27%)3953(Top 178%)
Half13.11 mi0.68 mi4349-14057+14057+14430(Top 17%)4096(Top 28%)4096(Top 185%)
25K15.53 mi2.42 mi4295+544011+464011+464335(Top 17%)3978(Top 27%)3978(Top 179%)
30K18.64 mi3.11 mi4190+1053903+1083903+1083929(Top 15%)3561(Top 24%)3561(Top 161%)
20M20.00 mi1.36 mi4167+233864+393864+394381(Top 17%)3828(Top 26%)3828(Top 173%)
21M21.00 mi1.00 mi4152+153839+253839+255037(Top 20%)4119(Top 28%)4119(Top 186%)
35K21.75 mi0.75 mi4092+603774+653774+653759(Top 15%)3284(Top 23%)3284(Top 148%)
23M23.00 mi1.25 mi4023+693694+803694+804234(Top 17%)3521(Top 24%)3521(Top 159%)
24M24.00 mi1.00 mi3993+303652+423652+424931(Top 19%)3856(Top 26%)3856(Top 174%)
40K24.85 mi0.85 mi4010-173650+23650+26390(Top 25%)4536(Top 31%)4536(Top 205%)
25.2M25.20 mi0.35 mi4070-603688-383688-389134(Top 36%)5871(Top 40%)5871(Top 265%)
Finish26.22 mi1.02 mi4165-953739-513739-518558(Top 33%)5679(Top 39%)5679(Top 256%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21stories
+97ft-345ft

Overall

4115

Males

3863

M45-49

3863

5K→10K

3.1 - 6.2 mi

Top 17%
×5stories
+79ft-138ft

Overall

4285

Males

4019

M45-49

4019

10K→15K

6.2 - 9.3 mi

Top 16%
×3stories
+67ft-78ft

Overall

4115

Males

3863

M45-49

3863

15K→20K

9.3 - 12.4 mi

Top 17%
×5stories
+106ft-86ft

Overall

4254

Males

3953

M45-49

3953

20K→Half

12.4 - 13.1 mi

Top 17%
×2stories
+19ft-37ft

Overall

4430

Males

4096

M45-49

4096

Half→25K

13.1 - 15.5 mi

Top 17%
×4stories
+66ft-88ft

Overall

4335

Males

3978

M45-49

3978

25K→30K

15.5 - 18.6 mi

Top 15%
×9stories
+181ft-148ft

Overall

3929

Males

3561

M45-49

3561

30K→20M

18.6 - 20.0 mi

Top 17%
×5stories
+64ft-50ft

Overall

4381

Males

3828

M45-49

3828

20M→21M

20.0 - 21.0 mi

Top 20%
×8stories
+106ft-24ft

Overall

5037

Males

4119

M45-49

4119

21M→35K

21.0 - 21.8 mi

Top 15%
×7stories
+17ft-86ft

Overall

3759

Males

3284

M45-49

3284

35K→23M

21.8 - 23.0 mi

Top 17%
×5stories
+23ft-63ft

Overall

4234

Males

3521

M45-49

3521

23M→24M

23.0 - 24.0 mi

Top 19%
×6stories
+12ft-82ft

Overall

4931

Males

3856

M45-49

3856

24M→40K

24.0 - 24.9 mi

Top 25%
×1story
+6ft-20ft

Overall

6390

Males

4536

M45-49

4536

40K→25.2M

24.9 - 25.2 mi

Top 36%
×1story
+13ft-16ft

Overall

9134

Males

5871

M45-49

5871

25.2M→Finish

25.2 - 26.2 mi

Top 33%
×2stories
+22ft-21ft

Overall

8558

Males

5679

M45-49

5679

Passing Analysis

Category:
Athletes Passed
1911
Passed By
991
Net Change
+920
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5085
5K → 10K45738+419#5085#4666
10K → 15K24742+205#4666#4461
15K → 20K213100+113#4461#4348
20K → Half3132-1#4348#4349
Half → 25K15096+54#4349#4295
25K → 30K243138+105#4295#4190
30K → 20M11491+23#4190#4167
20M → 21M10590+15#4167#4152
21M → 35K7515+60#4152#4092
35K → 23M12051+69#4092#4023
23M → 24M7646+30#4023#3993
24M → 40K4259-17#3993#4010
40K → 25.2M1373-60#4010#4070
25.2M → Finish25120-95#4070#4165
TOTALS1911991+920
📊

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