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BOSTON MARATHON 2023

David Mastro

Bib: 550•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 3%
Gender (Male)
#0 / 15176
Top 5%
Masters (Masters Men)
#0 / 9891
Top 1%
Division (M50-54)
#0 / 2052
Top 0.6%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:44
Rank: #738
Start → 5K
18:44 | 6:02/mi
10K· 6.21 mi
37:34
Rank: #822 (-84)
5K → 10K
18:50 | 6:04/mi
15K· 9.32 mi
56:30
Rank: #860 (-38)
10K → 15K
18:56 | 6:06/mi
20K· 12.43 mi
1:15:25
Rank: #817 (+43)
15K → 20K
18:55 | 6:05/mi
Half· 13.11 mi
1:19:32
Rank: #820 (-3)
20K → Half
4:07 | 6:02/mi
25K· 15.53 mi
1:34:15
Rank: #768 (+52)
Half → 25K
14:43 | 6:04/mi
30K· 18.64 mi
1:53:48
Rank: #787 (-19)
25K → 30K
19:33 | 6:18/mi
20M
2:02:25
Rank: #797 (-10)
30K → 20M
8:37 | 6:20/mi
21M
2:09:19
Rank: #811 (-14)
20M → 21M
6:54 | 6:54/mi
35K· 21.75 mi
2:14:02
Rank: #823 (-12)
21M → 35K
4:43 | 6:18/mi
23M
2:22:11
Rank: #836 (-13)
35K → 23M
8:09 | 6:31/mi
24M
2:28:31
Rank: #843 (-7)
23M → 24M
6:20 | 6:20/mi
40K· 24.85 mi
2:34:01
Rank: #842 (+1)
24M → 40K
5:30 | 6:26/mi
25.2M
2:36:25
Rank: #838 (+4)
40K → 25.2M
2:24 | 6:58/mi
Finish· 26.22 mi
2:42:43
Rank: #831 (+7)
25.2M → Finish
6:18 | 6:11/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:19:32
Pace6:04 /mi
2nd Half
Distance13.11 mi
Time1:23:11
Pace6:21 /mi
📊Positive Split: 4.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:5718:446:0218:44
6:02
-
10K
6.21 mi10:37:4737:346:0318:50
6:04
+0:02
15K
9.32 mi10:56:4356:306:0418:56
6:06
+0:02
20K
12.43 mi11:15:381:15:256:0418:55
6:05
-0:01
Half
13.11 mi11:19:451:19:326:044:07
6:02
-0:03
25K
15.53 mi11:34:281:34:156:0414:43
6:04
+0:02
30K
18.64 mi11:54:011:53:486:0619:33
6:18
+0:14
20M
20.00 mi12:02:382:02:256:078:37
6:20
+0:02
21M
21.00 mi12:09:322:09:196:096:54
6:54
+0:34
35K
21.75 mi12:14:152:14:026:104:43
6:18
-0:36
23M
23.00 mi12:22:242:22:116:118:09
6:31
+0:13
24M
24.00 mi12:28:442:28:316:116:20
6:20
-0:11
40K
24.85 mi12:34:142:34:016:125:30
6:26
+0:06
25.2M
25.20 mi12:36:382:36:256:122:24
6:58
+0:32
Finish
26.22 mi12:42:562:42:436:136:18
6:11
-0:47

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

6:02 /mi

Average Pace

6:13 /mi

Slowest Pace

6:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:33:25

94% of race

Time at Steady Pace

9:18

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:12 /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 mi10:18:5718:446:0218:44
6:02
#738
10K
6.21 mi10:37:4737:346:0318:50
6:04
#822
15K
9.32 mi10:56:4356:306:0418:56
6:06
#860
20K
12.43 mi11:15:381:15:256:0418:55
6:05
#817
Half
13.11 mi11:19:451:19:326:044:07
6:02
#820
25K
15.53 mi11:34:281:34:156:0414:43
6:04
#768
30K
18.64 mi11:54:011:53:486:0619:33
6:18
#787
20M
20.00 mi12:02:382:02:256:078:37
6:20
#797
21M
21.00 mi12:09:322:09:196:096:54
6:54
#811
35K
21.75 mi12:14:152:14:026:104:43
6:18
#823
23M
23.00 mi12:22:242:22:116:118:09
6:31
#836
24M
24.00 mi12:28:442:28:316:116:20
6:20
#843
40K
24.85 mi12:34:142:34:016:125:30
6:26
#842
25.2M
25.20 mi12:36:382:36:256:122:24
6:58
#838
Finish
26.22 mi12:42:562:42:436:136:18
6:11
#831
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi738690690952(Top 4%)903(Top 6%)903(Top 44%)
10K6.21 mi3.10 mi822-84775-85775-85966(Top 4%)916(Top 6%)916(Top 45%)
15K9.32 mi3.11 mi860-38812-37812-37952(Top 4%)903(Top 6%)903(Top 44%)
20K12.43 mi3.11 mi817+43772+40772+40761(Top 3%)718(Top 5%)718(Top 35%)
Half13.11 mi0.68 mi820-3775-3775-3848(Top 3%)806(Top 5%)806(Top 39%)
25K15.53 mi2.42 mi768+52724+51724+51669(Top 3%)628(Top 4%)628(Top 31%)
30K18.64 mi3.11 mi787-19745-21745-21893(Top 3%)850(Top 6%)850(Top 41%)
20M20.00 mi1.36 mi797-10755-10755-10959(Top 4%)916(Top 6%)916(Top 45%)
21M21.00 mi1.00 mi811-14767-12767-121738(Top 7%)1651(Top 11%)1651(Top 80%)
35K21.75 mi0.75 mi823-12779-12779-121558(Top 6%)1478(Top 10%)1478(Top 72%)
23M23.00 mi1.25 mi836-13791-12791-121432(Top 5%)1359(Top 9%)1359(Top 66%)
24M24.00 mi1.00 mi843-7797-6797-61418(Top 5%)1341(Top 9%)1341(Top 65%)
40K24.85 mi0.85 mi842+1796+1796+11294(Top 5%)1221(Top 8%)1221(Top 60%)
25.2M25.20 mi0.35 mi838+4793+3793+31570(Top 6%)1476(Top 10%)1476(Top 72%)
Finish26.22 mi1.02 mi831+7787+6787+61202(Top 5%)1143(Top 8%)1143(Top 56%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 4%
×21stories
+97ft-345ft

Overall

952

Males

903

M50-54

903

5K→10K

3.1 - 6.2 mi

Top 4%
×5stories
+79ft-138ft

Overall

966

Males

916

M50-54

916

10K→15K

6.2 - 9.3 mi

Top 4%
×3stories
+67ft-78ft

Overall

952

Males

903

M50-54

903

15K→20K

9.3 - 12.4 mi

Top 3%
×5stories
+106ft-86ft

Overall

761

Males

718

M50-54

718

20K→Half

12.4 - 13.1 mi

Top 3%
×2stories
+19ft-37ft

Overall

848

Males

806

M50-54

806

Half→25K

13.1 - 15.5 mi

Top 3%
×4stories
+66ft-88ft

Overall

669

Males

628

M50-54

628

25K→30K

15.5 - 18.6 mi

Top 3%
×9stories
+181ft-148ft

Overall

893

Males

850

M50-54

850

30K→20M

18.6 - 20.0 mi

Top 4%
×5stories
+64ft-50ft

Overall

959

Males

916

M50-54

916

20M→21M

20.0 - 21.0 mi

Top 7%
×8stories
+106ft-24ft

Overall

1738

Males

1651

M50-54

1651

21M→35K

21.0 - 21.8 mi

Top 6%
×7stories
+17ft-86ft

Overall

1558

Males

1478

M50-54

1478

35K→23M

21.8 - 23.0 mi

Top 5%
×5stories
+23ft-63ft

Overall

1432

Males

1359

M50-54

1359

23M→24M

23.0 - 24.0 mi

Top 5%
×6stories
+12ft-82ft

Overall

1418

Males

1341

M50-54

1341

24M→40K

24.0 - 24.9 mi

Top 5%
×1story
+6ft-20ft

Overall

1294

Males

1221

M50-54

1221

40K→25.2M

24.9 - 25.2 mi

Top 6%
×1story
+13ft-16ft

Overall

1570

Males

1476

M50-54

1476

25.2M→Finish

25.2 - 26.2 mi

Top 5%
×2stories
+22ft-21ft

Overall

1202

Males

1143

M50-54

1143

Passing Analysis

Category:
Athletes Passed
229
Passed By
322
Net Change
-93
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#738
5K → 10K1094-84#738#822
10K → 15K1048-38#822#860
15K → 20K5411+43#860#817
20K → Half14-3#817#820
Half → 25K564+52#820#768
25K → 30K1938-19#768#787
30K → 20M717-10#787#797
20M → 21M721-14#797#811
21M → 35K113-12#811#823
35K → 23M1528-13#823#836
23M → 24M916-7#836#843
24M → 40K1211+1#843#842
40K → 25.2M73+4#842#838
25.2M → Finish2114+7#838#831
TOTALS229322-93
📊

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