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BOSTON MARATHON 2024

Zack Horwitz

Bib: 25298•M

MA

0:00
0:00
/ mi
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Overall
#0 / 25550
Gender (Male)
#0 / 14578
Division (M18-39)
#0 / 4849
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
9:10/mi
28:30
↑ 97↓ 3451.5%
10K· 6.21 mi
8:56/mi
56:15
↑ 79↓ 1380.4%
15K· 9.32 mi
9:00/mi
1:24:14
↑ 67↓ 78
20K· 12.43 mi
9:07/mi
1:52:33
↑ 106↓ 860.1%
Half· 13.11 mi
9:17/mi
1:58:53
↑ 19↓ 370.5%
25K· 15.53 mi
9:39/mi
2:22:16
↑ 66↓ 880.2%
30K· 18.64 mi
12:22/mi
3:00:41
↑ 181↓ 1480.2%
20M
10:34/mi
3:15:03
↑ 64↓ 500.2%
21M
11:50/mi
3:26:53
↑ 106↓ 241.6%
35K· 21.75 mi
11:47/mi
3:35:42
↑ 17↓ 861.7%
23M
11:58/mi
3:50:41
↑ 23↓ 630.6%
24M
9:57/mi
4:00:38
↓ 821.3%
40K· 24.85 mi
12:09/mi
4:11:01
↓ 200.3%
25.2M
12:54/mi
4:15:28
↑ 13↓ 160.2%
Finish· 26.22 mi
10:16/mi
4:25:56
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:58:53
Pace9:04 /mi
2nd Half
Distance13.11 mi
Time2:27:03
Pace11:13 /mi
📊Positive Split: 23.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:48:1528:309:1028:30
9:10
-
10K
6.21 mi12:16:0056:159:0327:45
8:56
-0:14
15K
9.32 mi12:43:591:24:149:0227:59
9:00
+0:04
20K
12.43 mi13:12:181:52:339:0328:19
9:07
+0:07
Half
13.11 mi13:18:381:58:539:046:20
9:17
+0:10
25K
15.53 mi13:42:012:22:169:0923:23
9:39
+0:22
30K
18.64 mi14:20:263:00:419:4238:25
12:22
+2:43
20M
20.00 mi14:34:483:15:039:4514:22
10:34
-1:48
21M
21.00 mi14:46:383:26:539:5111:50
11:50
+1:16
35K
21.75 mi14:55:273:35:429:558:49
11:47
-0:03
23M
23.00 mi15:10:263:50:4110:0214:59
11:58
+0:11
24M
24.00 mi15:20:234:00:3810:029:57
9:57
-2:01
40K
24.85 mi15:30:464:11:0110:0610:23
12:09
+2:12
25.2M
25.20 mi15:35:134:15:2810:084:27
12:54
+0:45
Finish
26.22 mi15:45:414:25:5610:0910:28
10:16
-2:38

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

8:56 /mi

Average Pace

10:09 /mi

Slowest Pace

12:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:58:53

45% of race

Time at Steady Pace

58:10

22% of race

Time at Slower Pace

1:28:53

33% of race

Average Pace: 10:09 /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 mi11:48:1528:309:1028:30
9:10
#20711
10K
6.21 mi12:16:0056:159:0327:45
8:56
#20085
15K
9.32 mi12:43:591:24:149:0227:59
9:00
#19715
20K
12.43 mi13:12:181:52:339:0328:19
9:07
#19208
Half
13.11 mi13:18:381:58:539:046:20
9:17
#19211
25K
15.53 mi13:42:012:22:169:0923:23
9:39
#18988
30K
18.64 mi14:20:263:00:419:4238:25
12:22
#19943
20M
20.00 mi14:34:483:15:039:4514:22
10:34
#19797
21M
21.00 mi14:46:383:26:539:5111:50
11:50
#19674
35K
21.75 mi14:55:273:35:429:558:49
11:47
#19749
23M
23.00 mi15:10:263:50:4110:0214:59
11:58
#19817
24M
24.00 mi15:20:234:00:3810:029:57
9:57
#19631
40K
24.85 mi15:30:464:11:0110:0610:23
12:09
#19689
25.2M
25.20 mi15:35:134:15:2810:084:27
12:54
#19682
Finish
26.22 mi15:45:414:25:5610:0910:28
10:16
#19662
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi20711124081240818949(Top 74%)11686(Top 80%)11686(Top 241%)
10K6.21 mi3.10 mi20085+62612136+27212136+27219461(Top 76%)11885(Top 82%)11885(Top 245%)
15K9.32 mi3.11 mi19715+37011982+15411982+15418949(Top 74%)11686(Top 80%)11686(Top 241%)
20K12.43 mi3.11 mi19208+50711751+23111751+23117823(Top 70%)11178(Top 77%)11178(Top 231%)
Half13.11 mi0.68 mi19211-311754-311754-319347(Top 76%)11787(Top 81%)11787(Top 243%)
25K15.53 mi2.42 mi18988+22311647+10711647+10718012(Top 70%)11148(Top 76%)11148(Top 230%)
30K18.64 mi3.11 mi19943-95512040-39312040-39322508(Top 88%)13054(Top 90%)13054(Top 269%)
20M20.00 mi1.36 mi19797+14611942+9811942+9818178(Top 71%)10848(Top 74%)10848(Top 224%)
21M21.00 mi1.00 mi19674+12311857+8511857+8518431(Top 72%)10846(Top 74%)10846(Top 224%)
35K21.75 mi0.75 mi19749-7511871-1411871-1421396(Top 84%)12306(Top 84%)12306(Top 254%)
23M23.00 mi1.25 mi19817-6811882-1111882-1120647(Top 81%)11885(Top 82%)11885(Top 245%)
24M24.00 mi1.00 mi19631+18611771+11111771+11116145(Top 63%)9596(Top 66%)9596(Top 198%)
40K24.85 mi0.85 mi19689-5811788-1711788-1720721(Top 81%)11821(Top 81%)11821(Top 244%)
25.2M25.20 mi0.35 mi19682+711778+1011778+1019442(Top 76%)11162(Top 77%)11162(Top 230%)
Finish26.22 mi1.02 mi19662+2011760+1811760+1819303(Top 76%)11133(Top 76%)11133(Top 230%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 74%
×21story building
+97ft-345ft

Overall

18949

Males

11686

M18-39

11686

5K→10K

3.1 - 6.2 mi

Top 76%
×5story building
+79ft-138ft

Overall

19461

Males

11885

M18-39

11885

10K→15K

6.2 - 9.3 mi

Top 74%
×3story building
+67ft-78ft

Overall

18949

Males

11686

M18-39

11686

15K→20K

9.3 - 12.4 mi

Top 70%
×5story building
+106ft-86ft

Overall

17823

Males

11178

M18-39

11178

20K→Half

12.4 - 13.1 mi

Top 76%
×2story building
+19ft-37ft

Overall

19347

Males

11787

M18-39

11787

Half→25K

13.1 - 15.5 mi

Top 70%
×4story building
+66ft-88ft

Overall

18012

Males

11148

M18-39

11148

25K→30K

15.5 - 18.6 mi

Top 88%
×9story building
+181ft-148ft

Overall

22508

Males

13054

M18-39

13054

30K→20M

18.6 - 20.0 mi

Top 71%
×5story building
+64ft-50ft

Overall

18178

Males

10848

M18-39

10848

20M→21M

20.0 - 21.0 mi

Top 72%
×8story building
+106ft-24ft

Overall

18431

Males

10846

M18-39

10846

21M→35K

21.0 - 21.8 mi

Top 84%
×7story building
+17ft-86ft

Overall

21396

Males

12306

M18-39

12306

35K→23M

21.8 - 23.0 mi

Top 81%
×5story building
+23ft-63ft

Overall

20647

Males

11885

M18-39

11885

23M→24M

23.0 - 24.0 mi

Top 63%
×6story building
+12ft-82ft

Overall

16145

Males

9596

M18-39

9596

24M→40K

24.0 - 24.9 mi

Top 81%
×1story
+6ft-20ft

Overall

20721

Males

11821

M18-39

11821

40K→25.2M

24.9 - 25.2 mi

Top 76%
×1story
+13ft-16ft

Overall

19442

Males

11162

M18-39

11162

25.2M→Finish

25.2 - 26.2 mi

Top 76%
×2story building
+22ft-21ft

Overall

19303

Males

11133

M18-39

11133

Passing Analysis

Category:
Athletes Passed
2776
Passed By
1727
Net Change
+1049
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20711
5K → 10K70882+626#20711#20085
10K → 15K41343+370#20085#19715
15K → 20K53932+507#19715#19208
20K → Half3437-3#19208#19211
Half → 25K30885+223#19211#18988
25K → 30K37992-955#18988#19943
30K → 20M16418+146#19943#19797
20M → 21M14926+123#19797#19674
21M → 35K39114-75#19674#19749
35K → 23M68136-68#19749#19817
23M → 24M1871+186#19817#19631
24M → 40K44102-58#19631#19689
40K → 25.2M2316+7#19689#19682
25.2M → Finish6343+20#19682#19662
TOTALS27761727+1049
📊

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