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BOSTON MARATHON 2023

Zachary Bouck

Bib: 27183•M

CO

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

⏱️ 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
9:36/mi
29:51
↑ 97↓ 3451.5%
10K· 6.21 mi
8:53/mi
57:26
↑ 79↓ 1380.4%
15K· 9.32 mi
8:42/mi
1:24:27
↑ 67↓ 78
20K· 12.43 mi
8:47/mi
1:51:43
↑ 106↓ 860.1%
Half· 13.11 mi
8:34/mi
1:57:34
↑ 19↓ 370.5%
25K· 15.53 mi
8:34/mi
2:18:21
↑ 66↓ 880.2%
30K· 18.64 mi
9:14/mi
2:47:01
↑ 181↓ 1480.2%
20M
9:16/mi
2:59:37
↑ 64↓ 500.2%
21M
9:16/mi
3:08:53
↑ 106↓ 241.6%
35K· 21.75 mi
8:35/mi
3:15:18
↑ 17↓ 861.7%
23M
8:28/mi
3:25:54
↑ 23↓ 630.6%
24M
8:09/mi
3:34:03
↓ 821.3%
40K· 24.85 mi
8:16/mi
3:41:07
↓ 200.3%
25.2M
8:16/mi
3:43:58
↑ 13↓ 160.2%
Finish· 26.22 mi
8:19/mi
3:52:26
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:57:34
Pace8:58 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:54:52
Pace8:46 /mi
📊Negative Split: 2.3% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:5929:519:3629:51
9:36
-
10K
6.21 mi12:18:3457:269:1527:35
8:53
-0:43
15K
9.32 mi12:45:351:24:279:0427:01
8:42
-0:11
20K
12.43 mi13:12:511:51:438:5927:16
8:47
+0:05
Half
13.11 mi13:18:421:57:348:585:51
8:34
-0:13
25K
15.53 mi13:39:292:18:218:5420:47
8:34
0:00
30K
18.64 mi14:08:092:47:018:5828:40
9:14
+0:40
20M
20.00 mi14:20:452:59:378:5912:36
9:16
+0:02
21M
21.00 mi14:30:013:08:539:009:16
9:16
0:00
35K
21.75 mi14:36:263:15:188:596:25
8:35
-0:41
23M
23.00 mi14:47:023:25:548:5710:36
8:28
-0:07
24M
24.00 mi14:55:113:34:038:558:09
8:09
-0:19
40K
24.85 mi15:02:153:41:078:547:04
8:16
+0:07
25.2M
25.20 mi15:05:063:43:588:532:51
8:16
0:00
Finish
26.22 mi15:13:343:52:268:528:28
8:19
+0:03

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

8:09 /mi

Average Pace

8:52 /mi

Slowest Pace

9:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:32:03

65% of race

Time at Steady Pace

1:20:23

35% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:52 /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 mi11:50:5929:519:3629:51
9:36
#22391
10K
6.21 mi12:18:3457:269:1527:35
8:53
#21534
15K
9.32 mi12:45:351:24:279:0427:01
8:42
#20838
20K
12.43 mi13:12:511:51:438:5927:16
8:47
#20311
Half
13.11 mi13:18:421:57:348:585:51
8:34
#20219
25K
15.53 mi13:39:292:18:218:5420:47
8:34
#19652
30K
18.64 mi14:08:092:47:018:5828:40
9:14
#19395
20M
20.00 mi14:20:452:59:378:5912:36
9:16
#19271
21M
21.00 mi14:30:013:08:539:009:16
9:16
#19026
35K
21.75 mi14:36:263:15:188:596:25
8:35
#18911
23M
23.00 mi14:47:023:25:548:5710:36
8:28
#18578
24M
24.00 mi14:55:113:34:038:558:09
8:09
#18331
40K
24.85 mi15:02:153:41:078:547:04
8:16
#18132
25.2M
25.20 mi15:05:063:43:588:532:51
8:16
#18001
Finish
26.22 mi15:13:343:52:268:528:28
8:19
#17862
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi22391132981329818943(Top 71%)11852(Top 78%)11852(Top 529%)
10K6.21 mi3.10 mi21534+85712915+38312915+38320319(Top 76%)12416(Top 82%)12416(Top 554%)
15K9.32 mi3.11 mi20838+69612621+29412621+29418943(Top 71%)11852(Top 78%)11852(Top 529%)
20K12.43 mi3.11 mi20311+52712396+22512396+22518537(Top 70%)11701(Top 77%)11701(Top 522%)
Half13.11 mi0.68 mi20219+9212361+3512361+3518132(Top 68%)11538(Top 76%)11538(Top 515%)
25K15.53 mi2.42 mi19652+56712119+24212119+24216635(Top 62%)10822(Top 71%)10822(Top 483%)
30K18.64 mi3.11 mi19395+25712006+11312006+11318275(Top 69%)11450(Top 75%)11450(Top 511%)
20M20.00 mi1.36 mi19271+12411935+7111935+7117871(Top 67%)11170(Top 74%)11170(Top 498%)
21M21.00 mi1.00 mi19026+24511824+11111824+11114861(Top 56%)9866(Top 65%)9866(Top 440%)
35K21.75 mi0.75 mi18911+11511763+6111763+6115726(Top 59%)10181(Top 67%)10181(Top 454%)
23M23.00 mi1.25 mi18578+33311621+14211621+14212993(Top 49%)8920(Top 59%)8920(Top 398%)
24M24.00 mi1.00 mi18331+24711490+13111490+13112252(Top 46%)8525(Top 56%)8525(Top 380%)
40K24.85 mi0.85 mi18132+19911396+9411396+9411796(Top 44%)8237(Top 54%)8237(Top 368%)
25.2M25.20 mi0.35 mi18001+13111335+6111335+618101(Top 30%)6261(Top 41%)6261(Top 279%)
Finish26.22 mi1.02 mi17862+13911275+6011275+6014154(Top 53%)9320(Top 61%)9320(Top 416%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 71%
×21story building
+97ft-345ft

Overall

18943

Males

11852

M40-44

11852

5K→10K

3.1 - 6.2 mi

Top 76%
×5story building
+79ft-138ft

Overall

20319

Males

12416

M40-44

12416

10K→15K

6.2 - 9.3 mi

Top 71%
×3story building
+67ft-78ft

Overall

18943

Males

11852

M40-44

11852

15K→20K

9.3 - 12.4 mi

Top 70%
×5story building
+106ft-86ft

Overall

18537

Males

11701

M40-44

11701

20K→Half

12.4 - 13.1 mi

Top 68%
×2story building
+19ft-37ft

Overall

18132

Males

11538

M40-44

11538

Half→25K

13.1 - 15.5 mi

Top 62%
×4story building
+66ft-88ft

Overall

16635

Males

10822

M40-44

10822

25K→30K

15.5 - 18.6 mi

Top 69%
×9story building
+181ft-148ft

Overall

18275

Males

11450

M40-44

11450

30K→20M

18.6 - 20.0 mi

Top 67%
×5story building
+64ft-50ft

Overall

17871

Males

11170

M40-44

11170

20M→21M

20.0 - 21.0 mi

Top 56%
×8story building
+106ft-24ft

Overall

14861

Males

9866

M40-44

9866

21M→35K

21.0 - 21.8 mi

Top 59%
×7story building
+17ft-86ft

Overall

15726

Males

10181

M40-44

10181

35K→23M

21.8 - 23.0 mi

Top 49%
×5story building
+23ft-63ft

Overall

12993

Males

8920

M40-44

8920

23M→24M

23.0 - 24.0 mi

Top 46%
×6story building
+12ft-82ft

Overall

12252

Males

8525

M40-44

8525

24M→40K

24.0 - 24.9 mi

Top 44%
×1story
+6ft-20ft

Overall

11796

Males

8237

M40-44

8237

40K→25.2M

24.9 - 25.2 mi

Top 30%
×1story
+13ft-16ft

Overall

8101

Males

6261

M40-44

6261

25.2M→Finish

25.2 - 26.2 mi

Top 53%
×2story building
+22ft-21ft

Overall

14154

Males

9320

M40-44

9320

Passing Analysis

Category:
Athletes Passed
4676
Passed By
147
Net Change
+4529
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22391
5K → 10K88629+857#22391#21534
10K → 15K70812+696#21534#20838
15K → 20K54215+527#20838#20311
20K → Half953+92#20311#20219
Half → 25K5703+567#20219#19652
25K → 30K29639+257#19652#19395
30K → 20M15026+124#19395#19271
20M → 21M2505+245#19271#19026
21M → 35K1172+115#19026#18911
35K → 23M3341+333#18911#18578
23M → 24M2470+247#18578#18331
24M → 40K1990+199#18331#18132
40K → 25.2M1310+131#18132#18001
25.2M → Finish15112+139#18001#17862
TOTALS4676147+4529
📊

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