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BOSTON MARATHON 2023

Zachary Bailey

Bib: 31053•M

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 33%
Gender (Male)
#0 / 15176
Top 48%
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:04
Rank: #16784
Start → 5K
26:04 | 8:23/mi
10K· 6.21 mi
49:17
Rank: #13820 (+2964)
5K → 10K
23:13 | 7:28/mi
15K· 9.32 mi
1:11:06
Rank: #11170 (+2650)
10K → 15K
21:49 | 7:01/mi
20K· 12.43 mi
1:33:24
Rank: #9967 (+1203)
15K → 20K
22:18 | 7:11/mi
Half· 13.11 mi
1:38:23
Rank: #9887 (+80)
20K → Half
4:59 | 7:18/mi
25K· 15.53 mi
1:56:38
Rank: #9715 (+172)
Half → 25K
18:15 | 7:32/mi
30K· 18.64 mi
2:20:47
Rank: #9603 (+112)
25K → 30K
24:09 | 7:46/mi
20M
2:31:05
Rank: #9395 (+208)
30K → 20M
10:18 | 7:35/mi
21M
2:39:06
Rank: #9232 (+163)
20M → 21M
8:01 | 8:01/mi
35K· 21.75 mi
2:44:44
Rank: #9194 (+38)
21M → 35K
5:38 | 7:32/mi
23M
2:54:18
Rank: #9060 (+134)
35K → 23M
9:34 | 7:38/mi
24M
3:01:38
Rank: #8927 (+133)
23M → 24M
7:20 | 7:20/mi
40K· 24.85 mi
3:08:07
Rank: #8854 (+73)
24M → 40K
6:29 | 7:35/mi
25.2M
3:11:03
Rank: #8834 (+20)
40K → 25.2M
2:56 | 8:30/mi
Finish· 26.22 mi
3:19:02
Rank: #8898 (-64)
25.2M → Finish
7:59 | 7:50/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:23
Pace7:30 /mi
2nd Half
Distance13.11 mi
Time1:40:39
Pace7:41 /mi
📊Positive Split: 2.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:0826:048:2326:04
8:23
-
10K
6.21 mi12:10:2149:177:5623:13
7:28
-0:55
15K
9.32 mi12:32:101:11:067:3821:49
7:01
-0:27
20K
12.43 mi12:54:281:33:247:3122:18
7:11
+0:10
Half
13.11 mi12:59:271:38:237:304:59
7:18
+0:07
25K
15.53 mi13:17:421:56:387:3018:15
7:32
+0:14
30K
18.64 mi13:41:512:20:477:3324:09
7:46
+0:14
20M
20.00 mi13:52:092:31:057:3310:18
7:35
-0:11
21M
21.00 mi14:00:102:39:067:358:01
8:01
+0:26
35K
21.75 mi14:05:482:44:447:345:38
7:32
-0:29
23M
23.00 mi14:15:222:54:187:359:34
7:38
+0:06
24M
24.00 mi14:22:423:01:387:347:20
7:20
-0:18
40K
24.85 mi14:29:113:08:077:346:29
7:35
+0:15
25.2M
25.20 mi14:32:073:11:037:352:56
8:30
+0:55
Finish
26.22 mi14:40:063:19:027:367:59
7:50
-0:40

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

7:01 /mi

Average Pace

7:36 /mi

Slowest Pace

8:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

56:26

28% of race

Time at Steady Pace

1:37:36

49% of race

Time at Slower Pace

45:00

23% of race

Average Pace: 7:35 /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 mi11:47:0826:048:2326:04
8:23
#16784
10K
6.21 mi12:10:2149:177:5623:13
7:28
#13820
15K
9.32 mi12:32:101:11:067:3821:49
7:01
#11170
20K
12.43 mi12:54:281:33:247:3122:18
7:11
#9967
Half
13.11 mi12:59:271:38:237:304:59
7:18
#9887
25K
15.53 mi13:17:421:56:387:3018:15
7:32
#9715
30K
18.64 mi13:41:512:20:477:3324:09
7:46
#9603
20M
20.00 mi13:52:092:31:057:3310:18
7:35
#9395
21M
21.00 mi14:00:102:39:067:358:01
8:01
#9232
35K
21.75 mi14:05:482:44:447:345:38
7:32
#9194
23M
23.00 mi14:15:222:54:187:359:34
7:38
#9060
24M
24.00 mi14:22:423:01:387:347:20
7:20
#8927
40K
24.85 mi14:29:113:08:077:346:29
7:35
#8854
25.2M
25.20 mi14:32:073:11:037:352:56
8:30
#8834
Finish
26.22 mi14:40:063:19:027:367:59
7:50
#8898
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1678410975109756707(Top 25%)6020(Top 40%)6020(Top 114%)
10K6.21 mi3.10 mi13820+29649865+11109865+111010224(Top 38%)8286(Top 55%)8286(Top 157%)
15K9.32 mi3.11 mi11170+26508730+11358730+11356707(Top 25%)6020(Top 40%)6020(Top 114%)
20K12.43 mi3.11 mi9967+12038131+5998131+5996964(Top 26%)6187(Top 41%)6187(Top 117%)
Half13.11 mi0.68 mi9887+808089+428089+428604(Top 32%)7268(Top 48%)7268(Top 138%)
25K15.53 mi2.42 mi9715+1727969+1207969+1208964(Top 34%)7411(Top 49%)7411(Top 140%)
30K18.64 mi3.11 mi9603+1127872+977872+979146(Top 34%)7358(Top 48%)7358(Top 139%)
20M20.00 mi1.36 mi9395+2087713+1597713+1597357(Top 28%)6195(Top 41%)6195(Top 117%)
21M21.00 mi1.00 mi9232+1637593+1207593+1207450(Top 28%)6154(Top 41%)6154(Top 116%)
35K21.75 mi0.75 mi9194+387556+377556+378700(Top 33%)6917(Top 46%)6917(Top 131%)
23M23.00 mi1.25 mi9060+1347456+1007456+1007365(Top 28%)6045(Top 40%)6045(Top 114%)
24M24.00 mi1.00 mi8927+1337348+1087348+1086611(Top 25%)5501(Top 36%)5501(Top 104%)
40K24.85 mi0.85 mi8854+737280+687280+687208(Top 27%)5756(Top 38%)5756(Top 109%)
25.2M25.20 mi0.35 mi8834+207261+197261+199486(Top 36%)7012(Top 46%)7012(Top 133%)
Finish26.22 mi1.02 mi8898-647286-257286-2510903(Top 41%)7740(Top 51%)7740(Top 146%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 25%
×21stories
+97ft-345ft

Overall

6707

Males

6020

M18-39

6020

5K→10K

3.1 - 6.2 mi

Top 38%
×5stories
+79ft-138ft

Overall

10224

Males

8286

M18-39

8286

10K→15K

6.2 - 9.3 mi

Top 25%
×3stories
+67ft-78ft

Overall

6707

Males

6020

M18-39

6020

15K→20K

9.3 - 12.4 mi

Top 26%
×5stories
+106ft-86ft

Overall

6964

Males

6187

M18-39

6187

20K→Half

12.4 - 13.1 mi

Top 32%
×2stories
+19ft-37ft

Overall

8604

Males

7268

M18-39

7268

Half→25K

13.1 - 15.5 mi

Top 34%
×4stories
+66ft-88ft

Overall

8964

Males

7411

M18-39

7411

25K→30K

15.5 - 18.6 mi

Top 34%
×9stories
+181ft-148ft

Overall

9146

Males

7358

M18-39

7358

30K→20M

18.6 - 20.0 mi

Top 28%
×5stories
+64ft-50ft

Overall

7357

Males

6195

M18-39

6195

20M→21M

20.0 - 21.0 mi

Top 28%
×8stories
+106ft-24ft

Overall

7450

Males

6154

M18-39

6154

21M→35K

21.0 - 21.8 mi

Top 33%
×7stories
+17ft-86ft

Overall

8700

Males

6917

M18-39

6917

35K→23M

21.8 - 23.0 mi

Top 28%
×5stories
+23ft-63ft

Overall

7365

Males

6045

M18-39

6045

23M→24M

23.0 - 24.0 mi

Top 25%
×6stories
+12ft-82ft

Overall

6611

Males

5501

M18-39

5501

24M→40K

24.0 - 24.9 mi

Top 27%
×1story
+6ft-20ft

Overall

7208

Males

5756

M18-39

5756

40K→25.2M

24.9 - 25.2 mi

Top 36%
×1story
+13ft-16ft

Overall

9486

Males

7012

M18-39

7012

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2stories
+22ft-21ft

Overall

10903

Males

7740

M18-39

7740

Passing Analysis

Category:
Athletes Passed
8252*
Passed By
366
Net Change
+7886
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16784
5K → 10K29717+2964#16784#13820
10K → 15K26511+2650#13820#11170
15K → 20K1204*1+1203#11170#9967
20K → Half811+80#9967#9887
Half → 25K19826+172#9887#9715
25K → 30K218*106+112#9715#9603
30K → 20M22113+208#9603#9395
20M → 21M18017+163#9395#9232
21M → 35K5820+38#9232#9194
35K → 23M15824+134#9194#9060
23M → 24M14714+133#9060#8927
24M → 40K9017+73#8927#8854
40K → 25.2M4020+20#8854#8834
25.2M → Finish3599-64#8834#8898
TOTALS8252*366+7886

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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