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BOSTON MARATHON 2024

Ji Zou

Bib: 6255•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Top 25%
Gender (Male)
#0 / 14578
Top 36%
Masters (Masters Men)
#0 / 9729
Top 24%
Division (M40-44)
#0 / 2009
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:36
Rank: #4259
Start → 5K
20:36 | 6:38/mi
10K· 6.21 mi
41:30
Rank: #4391 (-132)
5K → 10K
20:54 | 6:44/mi
15K· 9.32 mi
1:02:36
Rank: #4454 (-63)
10K → 15K
21:06 | 6:47/mi
20K· 12.43 mi
1:23:55
Rank: #4366 (+88)
15K → 20K
21:19 | 6:52/mi
Half· 13.11 mi
1:28:30
Rank: #4329 (+37)
20K → Half
4:35 | 6:43/mi
25K· 15.53 mi
1:45:33
Rank: #4318 (+11)
Half → 25K
17:03 | 7:02/mi
30K· 18.64 mi
2:09:16
Rank: #4637 (-319)
25K → 30K
23:43 | 7:38/mi
20M
2:20:08
Rank: #4727 (-90)
30K → 20M
10:52 | 8:00/mi
21M
2:28:37
Rank: #4744 (-17)
20M → 21M
8:29 | 8:29/mi
35K· 21.75 mi
2:35:14
Rank: #4944 (-200)
21M → 35K
6:37 | 8:51/mi
23M
2:46:29
Rank: #5160 (-216)
35K → 23M
11:15 | 8:59/mi
24M
2:55:42
Rank: #5439 (-279)
23M → 24M
9:13 | 9:13/mi
40K· 24.85 mi
3:05:02
Rank: #5934 (-495)
24M → 40K
9:20 | 10:55/mi
25.2M
3:08:47
Rank: #6086 (-152)
40K → 25.2M
3:45 | 10:52/mi
Finish· 26.22 mi
3:17:38
Rank: #6301 (-215)
25.2M → Finish
8:51 | 8:41/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:30
Pace6:45 /mi
2nd Half
Distance13.11 mi
Time1:49:08
Pace8:20 /mi
📊Positive Split: 23.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:2720:366:3820:36
6:38
-
10K
6.21 mi10:46:2141:306:4120:54
6:44
+0:06
15K
9.32 mi11:07:271:02:366:4321:06
6:47
+0:03
20K
12.43 mi11:28:461:23:556:4521:19
6:52
+0:05
Half
13.11 mi11:33:211:28:306:454:35
6:43
-0:09
25K
15.53 mi11:50:241:45:336:4817:03
7:02
+0:19
30K
18.64 mi12:14:072:09:166:5623:43
7:38
+0:36
20M
20.00 mi12:24:592:20:087:0010:52
8:00
+0:22
21M
21.00 mi12:33:282:28:377:058:29
8:29
+0:29
35K
21.75 mi12:40:052:35:147:086:37
8:51
+0:22
23M
23.00 mi12:51:202:46:297:1411:15
8:59
+0:08
24M
24.00 mi13:00:332:55:427:199:13
9:13
+0:14
40K
24.85 mi13:09:533:05:027:279:20
10:55
+1:42
25.2M
25.20 mi13:13:383:08:477:293:45
10:52
-0:03
Finish
26.22 mi13:22:293:17:387:338:51
8:41
-2:11

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

6:38 /mi

Average Pace

7:33 /mi

Slowest Pace

10:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:45:33

53% of race

Time at Steady Pace

51:55

26% of race

Time at Slower Pace

40:10

20% of race

Average Pace: 7:32 /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 mi10:25:2720:366:3820:36
6:38
#4259
10K
6.21 mi10:46:2141:306:4120:54
6:44
#4391
15K
9.32 mi11:07:271:02:366:4321:06
6:47
#4454
20K
12.43 mi11:28:461:23:556:4521:19
6:52
#4366
Half
13.11 mi11:33:211:28:306:454:35
6:43
#4329
25K
15.53 mi11:50:241:45:336:4817:03
7:02
#4318
30K
18.64 mi12:14:072:09:166:5623:43
7:38
#4637
20M
20.00 mi12:24:592:20:087:0010:52
8:00
#4727
21M
21.00 mi12:33:282:28:377:058:29
8:29
#4744
35K
21.75 mi12:40:052:35:147:086:37
8:51
#4944
23M
23.00 mi12:51:202:46:297:1411:15
8:59
#5160
24M
24.00 mi13:00:332:55:427:199:13
9:13
#5439
40K
24.85 mi13:09:533:05:027:279:20
10:55
#5934
25.2M
25.20 mi13:13:383:08:477:293:45
10:52
#6086
Finish
26.22 mi13:22:293:17:387:338:51
8:41
#6301
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi4259401540154653(Top 18%)4325(Top 30%)4325(Top 215%)
10K6.21 mi3.10 mi4391-1324125-1104125-1104560(Top 18%)4252(Top 29%)4252(Top 212%)
15K9.32 mi3.11 mi4454-634164-394164-394653(Top 18%)4325(Top 30%)4325(Top 215%)
20K12.43 mi3.11 mi4366+884072+924072+924344(Top 17%)4031(Top 28%)4031(Top 201%)
Half13.11 mi0.68 mi4329+374039+334039+333966(Top 16%)3714(Top 25%)3714(Top 185%)
25K15.53 mi2.42 mi4318+114029+104029+104507(Top 18%)4115(Top 28%)4115(Top 205%)
30K18.64 mi3.11 mi4637-3194265-2364265-2365777(Top 23%)4858(Top 33%)4858(Top 242%)
20M20.00 mi1.36 mi4727-904326-614326-616721(Top 26%)5276(Top 36%)5276(Top 263%)
21M21.00 mi1.00 mi4744-174321+54321+56135(Top 24%)4760(Top 33%)4760(Top 237%)
35K21.75 mi0.75 mi4944-2004452-1314452-13112516(Top 49%)7928(Top 54%)7928(Top 395%)
23M23.00 mi1.25 mi5160-2164578-1264578-12611055(Top 43%)7092(Top 49%)7092(Top 353%)
24M24.00 mi1.00 mi5439-2794748-1704748-17013147(Top 51%)8107(Top 56%)8107(Top 404%)
40K24.85 mi0.85 mi5934-4955065-3175065-31717842(Top 70%)10365(Top 71%)10365(Top 516%)
25.2M25.20 mi0.35 mi6086-1525143-785143-7813999(Top 55%)8384(Top 58%)8384(Top 417%)
Finish26.22 mi1.02 mi6301-2155240-975240-9712504(Top 49%)7737(Top 53%)7737(Top 385%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 18%
×21stories
+97ft-345ft

Overall

4653

Males

4325

M40-44

4325

5K→10K

3.1 - 6.2 mi

Top 18%
×5stories
+79ft-138ft

Overall

4560

Males

4252

M40-44

4252

10K→15K

6.2 - 9.3 mi

Top 18%
×3stories
+67ft-78ft

Overall

4653

Males

4325

M40-44

4325

15K→20K

9.3 - 12.4 mi

Top 17%
×5stories
+106ft-86ft

Overall

4344

Males

4031

M40-44

4031

20K→Half

12.4 - 13.1 mi

Top 16%
×2stories
+19ft-37ft

Overall

3966

Males

3714

M40-44

3714

Half→25K

13.1 - 15.5 mi

Top 18%
×4stories
+66ft-88ft

Overall

4507

Males

4115

M40-44

4115

25K→30K

15.5 - 18.6 mi

Top 23%
×9stories
+181ft-148ft

Overall

5777

Males

4858

M40-44

4858

30K→20M

18.6 - 20.0 mi

Top 26%
×5stories
+64ft-50ft

Overall

6721

Males

5276

M40-44

5276

20M→21M

20.0 - 21.0 mi

Top 24%
×8stories
+106ft-24ft

Overall

6135

Males

4760

M40-44

4760

21M→35K

21.0 - 21.8 mi

Top 49%
×7stories
+17ft-86ft

Overall

12516

Males

7928

M40-44

7928

35K→23M

21.8 - 23.0 mi

Top 43%
×5stories
+23ft-63ft

Overall

11055

Males

7092

M40-44

7092

23M→24M

23.0 - 24.0 mi

Top 51%
×6stories
+12ft-82ft

Overall

13147

Males

8107

M40-44

8107

24M→40K

24.0 - 24.9 mi

Top 70%
×1story
+6ft-20ft

Overall

17842

Males

10365

M40-44

10365

40K→25.2M

24.9 - 25.2 mi

Top 55%
×1story
+13ft-16ft

Overall

13999

Males

8384

M40-44

8384

25.2M→Finish

25.2 - 26.2 mi

Top 49%
×2stories
+22ft-21ft

Overall

12504

Males

7737

M40-44

7737

Passing Analysis

Category:
Athletes Passed
1019
Passed By
3061
Net Change
-2042
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4259
5K → 10K126258-132#4259#4391
10K → 15K109172-63#4391#4454
15K → 20K199111+88#4454#4366
20K → Half5215+37#4366#4329
Half → 25K138127+11#4329#4318
25K → 30K108427-319#4318#4637
30K → 20M69159-90#4637#4727
20M → 21M86103-17#4727#4744
21M → 35K11211-200#4744#4944
35K → 23M49265-216#4944#5160
23M → 24M24303-279#5160#5439
24M → 40K13508-495#5439#5934
40K → 25.2M8160-152#5934#6086
25.2M → Finish27242-215#6086#6301
TOTALS10193061-2042
📊

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