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BOSTON MARATHON 2023

Zachary Cook

Bib: 25811•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 45%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 50%
Division (M40-44)
#0 / 2241
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:39
Rank: #15836
Start → 5K
25:39 | 8:15/mi
10K· 6.21 mi
50:11
Rank: #14936 (+900)
5K → 10K
24:32 | 7:54/mi
15K· 9.32 mi
1:14:26
Rank: #14258 (+678)
10K → 15K
24:15 | 7:48/mi
20K· 12.43 mi
1:39:05
Rank: #13878 (+380)
15K → 20K
24:39 | 7:56/mi
Half· 13.11 mi
1:44:28
Rank: #13851 (+27)
20K → Half
5:23 | 7:53/mi
25K· 15.53 mi
2:05:15
Rank: #14356 (-505)
Half → 25K
20:47 | 8:34/mi
30K· 18.64 mi
2:30:53
Rank: #14059 (+297)
25K → 30K
25:38 | 8:15/mi
20M
2:42:02
Rank: #13838 (+221)
30K → 20M
11:09 | 8:12/mi
21M
2:50:31
Rank: #13604 (+234)
20M → 21M
8:29 | 8:29/mi
35K· 21.75 mi
2:56:12
Rank: #13418 (+186)
21M → 35K
5:41 | 7:36/mi
23M
3:05:44
Rank: #13004 (+414)
35K → 23M
9:32 | 7:37/mi
24M
3:13:17
Rank: #12789 (+215)
23M → 24M
7:33 | 7:33/mi
40K· 24.85 mi
3:19:38
Rank: #12536 (+253)
24M → 40K
6:21 | 7:26/mi
25.2M
3:22:23
Rank: #12425 (+111)
40K → 25.2M
2:45 | 7:58/mi
Finish· 26.22 mi
3:29:31
Rank: #12101 (+324)
25.2M → Finish
7:08 | 7:00/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:44:28
Pace7:58 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:45:03
Pace8:01 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:41:5825:398:1525:39
8:15
-
10K
6.21 mi12:06:3050:118:0524:32
7:54
-0:21
15K
9.32 mi12:30:451:14:267:5924:15
7:48
-0:06
20K
12.43 mi12:55:241:39:057:5824:39
7:56
+0:08
Half
13.11 mi13:00:471:44:287:585:23
7:53
-0:03
25K
15.53 mi13:21:342:05:158:0420:47
8:34
+0:41
30K
18.64 mi13:47:122:30:538:0625:38
8:15
-0:19
20M
20.00 mi13:58:212:42:028:0611:09
8:12
-0:03
21M
21.00 mi14:06:502:50:318:078:29
8:29
+0:17
35K
21.75 mi14:12:312:56:128:065:41
7:36
-0:53
23M
23.00 mi14:22:033:05:448:059:32
7:37
+0:01
24M
24.00 mi14:29:363:13:178:037:33
7:33
-0:04
40K
24.85 mi14:35:573:19:388:026:21
7:26
-0:07
25.2M
25.20 mi14:38:423:22:238:022:45
7:58
+0:32
Finish
26.22 mi14:45:503:29:318:007:08
7:00
-0:58

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

7:00 /mi

Average Pace

8:00 /mi

Slowest Pace

8:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

36:15

17% of race

Time at Steady Pace

1:21:34

39% of race

Time at Slower Pace

1:31:42

44% of race

Average Pace: 7:59 /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 mi11:41:5825:398:1525:39
8:15
#15836
10K
6.21 mi12:06:3050:118:0524:32
7:54
#14936
15K
9.32 mi12:30:451:14:267:5924:15
7:48
#14258
20K
12.43 mi12:55:241:39:057:5824:39
7:56
#13878
Half
13.11 mi13:00:471:44:287:585:23
7:53
#13851
25K
15.53 mi13:21:342:05:158:0420:47
8:34
#14356
30K
18.64 mi13:47:122:30:538:0625:38
8:15
#14059
20M
20.00 mi13:58:212:42:028:0611:09
8:12
#13838
21M
21.00 mi14:06:502:50:318:078:29
8:29
#13604
35K
21.75 mi14:12:312:56:128:065:41
7:36
#13418
23M
23.00 mi14:22:033:05:448:059:32
7:37
#13004
24M
24.00 mi14:29:363:13:178:037:33
7:33
#12789
40K
24.85 mi14:35:573:19:388:026:21
7:26
#12536
25.2M
25.20 mi14:38:423:22:238:022:45
7:58
#12425
Finish
26.22 mi14:45:503:29:318:007:08
7:00
#12101
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi15836106391063912757(Top 48%)9414(Top 62%)9414(Top 420%)
10K6.21 mi3.10 mi14936+90010300+33910300+33913942(Top 52%)9911(Top 65%)9911(Top 442%)
15K9.32 mi3.11 mi14258+67810026+27410026+27412757(Top 48%)9414(Top 62%)9414(Top 420%)
20K12.43 mi3.11 mi13878+3809849+1779849+17712884(Top 48%)9383(Top 62%)9383(Top 419%)
Half13.11 mi0.68 mi13851+279837+129837+1213443(Top 50%)9648(Top 64%)9648(Top 431%)
25K15.53 mi2.42 mi14356-50510019-18210019-18216619(Top 62%)10806(Top 71%)10806(Top 482%)
30K18.64 mi3.11 mi14059+2979858+1619858+16112677(Top 48%)9089(Top 60%)9089(Top 406%)
20M20.00 mi1.36 mi13838+2219760+989760+9811722(Top 44%)8585(Top 57%)8585(Top 383%)
21M21.00 mi1.00 mi13604+2349650+1109650+11010388(Top 39%)7808(Top 51%)7808(Top 348%)
35K21.75 mi0.75 mi13418+1869560+909560+909257(Top 35%)7234(Top 48%)7234(Top 323%)
23M23.00 mi1.25 mi13004+4149356+2049356+2047192(Top 27%)5952(Top 39%)5952(Top 266%)
24M24.00 mi1.00 mi12789+2159247+1099247+1098049(Top 30%)6357(Top 42%)6357(Top 284%)
40K24.85 mi0.85 mi12536+2539123+1249123+1246263(Top 24%)5198(Top 34%)5198(Top 232%)
25.2M25.20 mi0.35 mi12425+1119069+549069+546372(Top 24%)5208(Top 34%)5208(Top 232%)
Finish26.22 mi1.02 mi12101+3248904+1658904+1655228(Top 20%)4436(Top 29%)4436(Top 198%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 48%
×21stories
+97ft-345ft

Overall

12757

Males

9414

M40-44

9414

5K→10K

3.1 - 6.2 mi

Top 52%
×5stories
+79ft-138ft

Overall

13942

Males

9911

M40-44

9911

10K→15K

6.2 - 9.3 mi

Top 48%
×3stories
+67ft-78ft

Overall

12757

Males

9414

M40-44

9414

15K→20K

9.3 - 12.4 mi

Top 48%
×5stories
+106ft-86ft

Overall

12884

Males

9383

M40-44

9383

20K→Half

12.4 - 13.1 mi

Top 50%
×2stories
+19ft-37ft

Overall

13443

Males

9648

M40-44

9648

Half→25K

13.1 - 15.5 mi

Top 62%
×4stories
+66ft-88ft

Overall

16619

Males

10806

M40-44

10806

25K→30K

15.5 - 18.6 mi

Top 48%
×9stories
+181ft-148ft

Overall

12677

Males

9089

M40-44

9089

30K→20M

18.6 - 20.0 mi

Top 44%
×5stories
+64ft-50ft

Overall

11722

Males

8585

M40-44

8585

20M→21M

20.0 - 21.0 mi

Top 39%
×8stories
+106ft-24ft

Overall

10388

Males

7808

M40-44

7808

21M→35K

21.0 - 21.8 mi

Top 35%
×7stories
+17ft-86ft

Overall

9257

Males

7234

M40-44

7234

35K→23M

21.8 - 23.0 mi

Top 27%
×5stories
+23ft-63ft

Overall

7192

Males

5952

M40-44

5952

23M→24M

23.0 - 24.0 mi

Top 30%
×6stories
+12ft-82ft

Overall

8049

Males

6357

M40-44

6357

24M→40K

24.0 - 24.9 mi

Top 24%
×1story
+6ft-20ft

Overall

6263

Males

5198

M40-44

5198

40K→25.2M

24.9 - 25.2 mi

Top 24%
×1story
+13ft-16ft

Overall

6372

Males

5208

M40-44

5208

25.2M→Finish

25.2 - 26.2 mi

Top 20%
×2stories
+22ft-21ft

Overall

5228

Males

4436

M40-44

4436

Passing Analysis

Category:
Athletes Passed
4487
Passed By
752
Net Change
+3735
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15836
5K → 10K95959+900#15836#14936
10K → 15K69921+678#14936#14258
15K → 20K41030+380#14258#13878
20K → Half4821+27#13878#13851
Half → 25K40545-505#13851#14356
25K → 30K34447+297#14356#14059
30K → 20M2298+221#14059#13838
20M → 21M24410+234#13838#13604
21M → 35K1860+186#13604#13418
35K → 23M4140+414#13418#13004
23M → 24M2216+215#13004#12789
24M → 40K2541+253#12789#12536
40K → 25.2M1132+111#12536#12425
25.2M → Finish3262+324#12425#12101
TOTALS4487752+3735
📊

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