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BOSTON MARATHON 2023

John Pozo

Bib: 4873•M

NY

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 9%
Gender (Male)
#0 / 15176
Top 15%
Division (M18-39)
#0 / 5285
Top 33%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:01
Rank: #4279
Start → 5K
21:01 | 6:46/mi
10K· 6.21 mi
42:02
Rank: #4627 (-348)
5K → 10K
21:01 | 6:46/mi
15K· 9.32 mi
1:02:35
Rank: #4147 (+480)
10K → 15K
20:33 | 6:37/mi
20K· 12.43 mi
1:23:11
Rank: #3814 (+333)
15K → 20K
20:36 | 6:38/mi
Half· 13.11 mi
1:27:43
Rank: #3788 (+26)
20K → Half
4:32 | 6:38/mi
25K· 15.53 mi
1:43:53
Rank: #3651 (+137)
Half → 25K
16:10 | 6:40/mi
30K· 18.64 mi
2:04:36
Rank: #3318 (+333)
25K → 30K
20:43 | 6:40/mi
20M
2:13:39
Rank: #3162 (+156)
30K → 20M
9:03 | 6:40/mi
21M
2:20:30
Rank: #3014 (+148)
20M → 21M
6:51 | 6:51/mi
35K· 21.75 mi
2:25:16
Rank: #2947 (+67)
21M → 35K
4:46 | 6:22/mi
23M
2:33:23
Rank: #2776 (+171)
35K → 23M
8:07 | 6:29/mi
24M
2:39:41
Rank: #2659 (+117)
23M → 24M
6:18 | 6:18/mi
40K· 24.85 mi
2:45:08
Rank: #2558 (+101)
24M → 40K
5:27 | 6:22/mi
25.2M
2:47:26
Rank: #2500 (+58)
40K → 25.2M
2:18 | 6:40/mi
Finish· 26.22 mi
2:53:32
Rank: #2375 (+125)
25.2M → Finish
6:06 | 5:59/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:27:43
Pace6:41 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:25:49
Pace6:33 /mi
📊Negative Split: 2.2% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:4821:016:4621:01
6:46
-
10K
6.21 mi10:43:4942:026:4621:01
6:46
0:00
15K
9.32 mi11:04:221:02:356:4320:33
6:37
-0:09
20K
12.43 mi11:24:581:23:116:4220:36
6:38
+0:01
Half
13.11 mi11:29:301:27:436:414:32
6:38
0:00
25K
15.53 mi11:45:401:43:536:4116:10
6:40
+0:02
30K
18.64 mi12:06:232:04:366:4120:43
6:40
0:00
20M
20.00 mi12:15:262:13:396:419:03
6:40
0:00
21M
21.00 mi12:22:172:20:306:416:51
6:51
+0:11
35K
21.75 mi12:27:032:25:166:414:46
6:22
-0:29
23M
23.00 mi12:35:102:33:236:408:07
6:29
+0:07
24M
24.00 mi12:41:282:39:416:396:18
6:18
-0:11
40K
24.85 mi12:46:552:45:086:395:27
6:22
+0:04
25.2M
25.20 mi12:49:132:47:266:392:18
6:40
+0:18
Finish
26.22 mi12:55:192:53:326:376:06
5:59
-0:41

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

5:59 /mi

Average Pace

6:37 /mi

Slowest Pace

6:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

30:44

18% of race

Time at Steady Pace

2:22:48

82% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:37 /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 mi10:22:4821:016:4621:01
6:46
#4279
10K
6.21 mi10:43:4942:026:4621:01
6:46
#4627
15K
9.32 mi11:04:221:02:356:4320:33
6:37
#4147
20K
12.43 mi11:24:581:23:116:4220:36
6:38
#3814
Half
13.11 mi11:29:301:27:436:414:32
6:38
#3788
25K
15.53 mi11:45:401:43:536:4116:10
6:40
#3651
30K
18.64 mi12:06:232:04:366:4120:43
6:40
#3318
20M
20.00 mi12:15:262:13:396:419:03
6:40
#3162
21M
21.00 mi12:22:172:20:306:416:51
6:51
#3014
35K
21.75 mi12:27:032:25:166:414:46
6:22
#2947
23M
23.00 mi12:35:102:33:236:408:07
6:29
#2776
24M
24.00 mi12:41:282:39:416:396:18
6:18
#2659
40K
24.85 mi12:46:552:45:086:395:27
6:22
#2558
25.2M
25.20 mi12:49:132:47:266:392:18
6:40
#2500
Finish
26.22 mi12:55:192:53:326:376:06
5:59
#2375
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4279399739973384(Top 13%)3209(Top 21%)3209(Top 61%)
10K6.21 mi3.10 mi4627-3484315-3184315-3184928(Top 19%)4567(Top 30%)4567(Top 86%)
15K9.32 mi3.11 mi4147+4803893+4223893+4223384(Top 13%)3209(Top 21%)3209(Top 61%)
20K12.43 mi3.11 mi3814+3333601+2923601+2923069(Top 12%)2921(Top 19%)2921(Top 55%)
Half13.11 mi0.68 mi3788+263578+233578+233702(Top 14%)3486(Top 23%)3486(Top 66%)
25K15.53 mi2.42 mi3651+1373453+1253453+1253090(Top 12%)2945(Top 19%)2945(Top 56%)
30K18.64 mi3.11 mi3318+3333148+3053148+3052255(Top 8%)2150(Top 14%)2150(Top 41%)
20M20.00 mi1.36 mi3162+1563006+1423006+1422118(Top 8%)2019(Top 13%)2019(Top 38%)
21M21.00 mi1.00 mi3014+1482869+1372869+1371602(Top 6%)1526(Top 10%)1526(Top 29%)
35K21.75 mi0.75 mi2947+672807+622807+621867(Top 7%)1773(Top 12%)1773(Top 34%)
23M23.00 mi1.25 mi2776+1712648+1592648+1591374(Top 5%)1303(Top 9%)1303(Top 25%)
24M24.00 mi1.00 mi2659+1172538+1102538+1101354(Top 5%)1282(Top 8%)1282(Top 24%)
40K24.85 mi0.85 mi2558+1012442+962442+961147(Top 4%)1086(Top 7%)1086(Top 21%)
25.2M25.20 mi0.35 mi2500+582386+562386+56861(Top 3%)822(Top 5%)822(Top 16%)
Finish26.22 mi1.02 mi2375+1252269+1172269+117706(Top 3%)675(Top 4%)675(Top 13%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 13%
×21stories
+97ft-345ft

Overall

3384

Males

3209

M18-39

3209

5K→10K

3.1 - 6.2 mi

Top 19%
×5stories
+79ft-138ft

Overall

4928

Males

4567

M18-39

4567

10K→15K

6.2 - 9.3 mi

Top 13%
×3stories
+67ft-78ft

Overall

3384

Males

3209

M18-39

3209

15K→20K

9.3 - 12.4 mi

Top 12%
×5stories
+106ft-86ft

Overall

3069

Males

2921

M18-39

2921

20K→Half

12.4 - 13.1 mi

Top 14%
×2stories
+19ft-37ft

Overall

3702

Males

3486

M18-39

3486

Half→25K

13.1 - 15.5 mi

Top 12%
×4stories
+66ft-88ft

Overall

3090

Males

2945

M18-39

2945

25K→30K

15.5 - 18.6 mi

Top 8%
×9stories
+181ft-148ft

Overall

2255

Males

2150

M18-39

2150

30K→20M

18.6 - 20.0 mi

Top 8%
×5stories
+64ft-50ft

Overall

2118

Males

2019

M18-39

2019

20M→21M

20.0 - 21.0 mi

Top 6%
×8stories
+106ft-24ft

Overall

1602

Males

1526

M18-39

1526

21M→35K

21.0 - 21.8 mi

Top 7%
×7stories
+17ft-86ft

Overall

1867

Males

1773

M18-39

1773

35K→23M

21.8 - 23.0 mi

Top 5%
×5stories
+23ft-63ft

Overall

1374

Males

1303

M18-39

1303

23M→24M

23.0 - 24.0 mi

Top 5%
×6stories
+12ft-82ft

Overall

1354

Males

1282

M18-39

1282

24M→40K

24.0 - 24.9 mi

Top 4%
×1story
+6ft-20ft

Overall

1147

Males

1086

M18-39

1086

40K→25.2M

24.9 - 25.2 mi

Top 3%
×1story
+13ft-16ft

Overall

861

Males

822

M18-39

822

25.2M→Finish

25.2 - 26.2 mi

Top 3%
×2stories
+22ft-21ft

Overall

706

Males

675

M18-39

675

Passing Analysis

Category:
Athletes Passed
2427
Passed By
523
Net Change
+1904
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4279
5K → 10K95443-348#4279#4627
10K → 15K49414+480#4627#4147
15K → 20K3407+333#4147#3814
20K → Half3812+26#3814#3788
Half → 25K15720+137#3788#3651
25K → 30K3385+333#3651#3318
30K → 20M1593+156#3318#3162
20M → 21M1502+148#3162#3014
21M → 35K736+67#3014#2947
35K → 23M1721+171#2947#2776
23M → 24M1203+117#2776#2659
24M → 40K1032+101#2659#2558
40K → 25.2M602+58#2558#2500
25.2M → Finish1283+125#2500#2375
TOTALS2427523+1904
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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