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BOSTON MARATHON 2023

Jack Mastandrea

Bib: 58•M

MI

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 0.2%
Gender (Male)
#0 / 15176
Top 0.3%
Division (M18-39)
#0 / 5285
Top 0.9%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
15:50
Rank: #34
Start → 5K
15:50 | 5:06/mi
10K· 6.21 mi
31:42
Rank: #31 (+3)
5K → 10K
15:52 | 5:06/mi
15K· 9.32 mi
47:30
Rank: #30 (+1)
10K → 15K
15:48 | 5:05/mi
20K· 12.43 mi
1:03:12
Rank: #30
15K → 20K
15:42 | 5:03/mi
Half· 13.11 mi
1:06:37
Rank: #30
20K → Half
3:25 | 5:00/mi
25K· 15.53 mi
1:19:05
Rank: #28 (+2)
Half → 25K
12:28 | 5:09/mi
30K· 18.64 mi
1:35:39
Rank: #28
25K → 30K
16:34 | 5:20/mi
20M
1:43:02
Rank: #28
30K → 20M
7:23 | 5:26/mi
21M
1:49:04
Rank: #28
20M → 21M
6:02 | 6:02/mi
35K· 21.75 mi
1:53:19
Rank: #28
21M → 35K
4:15 | 5:41/mi
23M
2:01:08
Rank: #30 (-2)
35K → 23M
7:49 | 6:15/mi
24M
2:07:35
Rank: #31 (-1)
23M → 24M
6:27 | 6:27/mi
40K· 24.85 mi
2:13:45
Rank: #33 (-2)
24M → 40K
6:10 | 7:13/mi
25.2M
2:16:30
Rank: #40 (-7)
40K → 25.2M
2:45 | 7:58/mi
Finish· 26.22 mi
2:23:12
Rank: #52 (-12)
25.2M → Finish
6:42 | 6:34/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:06:37
Pace5:05 /mi
2nd Half
Distance13.11 mi
Time1:16:35
Pace5:51 /mi
📊Positive Split: 15.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi09:52:5115:505:0615:50
5:06
-
10K
6.21 mi10:08:4331:425:0615:52
5:06
0:00
15K
9.32 mi10:24:3147:305:0615:48
5:05
-0:01
20K
12.43 mi10:40:131:03:125:0515:42
5:03
-0:02
Half
13.11 mi10:43:381:06:375:053:25
5:00
-0:03
25K
15.53 mi10:56:061:19:055:0512:28
5:09
+0:09
30K
18.64 mi11:12:401:35:395:0816:34
5:20
+0:11
20M
20.00 mi11:20:031:43:025:097:23
5:26
+0:06
21M
21.00 mi11:26:051:49:045:126:02
6:02
+0:36
35K
21.75 mi11:30:201:53:195:134:15
5:41
-0:21
23M
23.00 mi11:38:092:01:085:167:49
6:15
+0:34
24M
24.00 mi11:44:362:07:355:196:27
6:27
+0:12
40K
24.85 mi11:50:462:13:455:236:10
7:13
+0:46
25.2M
25.20 mi11:53:312:16:305:252:45
7:58
+0:45
Finish
26.22 mi12:00:132:23:125:286:42
6:34
-1:24

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

5:00 /mi

Average Pace

5:28 /mi

Slowest Pace

7:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

1:47:17

75% of race

Time at Slower Pace

35:55

25% of race

Average Pace: 5:28 /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 mi09:52:5115:505:0615:50
5:06
#34
10K
6.21 mi10:08:4331:425:0615:52
5:06
#31
15K
9.32 mi10:24:3147:305:0615:48
5:05
#30
20K
12.43 mi10:40:131:03:125:0515:42
5:03
#30
Half
13.11 mi10:43:381:06:375:053:25
5:00
#30
25K
15.53 mi10:56:061:19:055:0512:28
5:09
#28
30K
18.64 mi11:12:401:35:395:0816:34
5:20
#28
20M
20.00 mi11:20:031:43:025:097:23
5:26
#28
21M
21.00 mi11:26:051:49:045:126:02
6:02
#28
35K
21.75 mi11:30:201:53:195:134:15
5:41
#28
23M
23.00 mi11:38:092:01:085:167:49
6:15
#30
24M
24.00 mi11:44:362:07:355:196:27
6:27
#31
40K
24.85 mi11:50:462:13:455:236:10
7:13
#33
25.2M
25.20 mi11:53:312:16:305:252:45
7:58
#40
Finish
26.22 mi12:00:132:23:125:286:42
6:34
#52
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi34343429(Top 0.1%)29(Top 0.2%)29(Top 0.5%)
10K6.21 mi3.10 mi31+331+331+331(Top 0.1%)31(Top 0.2%)31(Top 0.6%)
15K9.32 mi3.11 mi30+130+130+129(Top 0.1%)29(Top 0.2%)29(Top 0.5%)
20K12.43 mi3.11 mi30303023(Top 0.09%)23(Top 0.2%)23(Top 0.4%)
Half13.11 mi0.68 mi30303022(Top 0.08%)22(Top 0.1%)22(Top 0.4%)
25K15.53 mi2.42 mi28+228+228+225(Top 0.09%)25(Top 0.2%)25(Top 0.5%)
30K18.64 mi3.11 mi28282821(Top 0.08%)21(Top 0.1%)21(Top 0.4%)
20M20.00 mi1.36 mi28282831(Top 0.1%)31(Top 0.2%)31(Top 0.6%)
21M21.00 mi1.00 mi282828124(Top 0.5%)105(Top 0.7%)105(Top 2%)
35K21.75 mi0.75 mi282828191(Top 0.7%)168(Top 1%)168(Top 3%)
23M23.00 mi1.25 mi30-230-230-2685(Top 3%)645(Top 4%)645(Top 12%)
24M24.00 mi1.00 mi31-131-131-11856(Top 7%)1742(Top 11%)1742(Top 33%)
40K24.85 mi0.85 mi33-233-233-24903(Top 18%)4270(Top 28%)4270(Top 81%)
25.2M25.20 mi0.35 mi40-740-740-76214(Top 23%)5050(Top 33%)5050(Top 96%)
Finish26.22 mi1.02 mi52-1247-747-72818(Top 11%)2555(Top 17%)2555(Top 48%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 0.1%
×21stories
+97ft-345ft

Overall

29

Males

29

M18-39

29

5K→10K

3.1 - 6.2 mi

Top 0.1%
×5stories
+79ft-138ft

Overall

31

Males

31

M18-39

31

10K→15K

6.2 - 9.3 mi

Top 0.1%
×3stories
+67ft-78ft

Overall

29

Males

29

M18-39

29

15K→20K

9.3 - 12.4 mi

Top 0.09%
×5stories
+106ft-86ft

Overall

23

Males

23

M18-39

23

20K→Half

12.4 - 13.1 mi

Top 0.08%
×2stories
+19ft-37ft

Overall

22

Males

22

M18-39

22

Half→25K

13.1 - 15.5 mi

Top 0.09%
×4stories
+66ft-88ft

Overall

25

Males

25

M18-39

25

25K→30K

15.5 - 18.6 mi

Top 0.08%
×9stories
+181ft-148ft

Overall

21

Males

21

M18-39

21

30K→20M

18.6 - 20.0 mi

Top 0.1%
×5stories
+64ft-50ft

Overall

31

Males

31

M18-39

31

20M→21M

20.0 - 21.0 mi

Top 0.5%
×8stories
+106ft-24ft

Overall

124

Males

105

M18-39

105

21M→35K

21.0 - 21.8 mi

Top 0.7%
×7stories
+17ft-86ft

Overall

191

Males

168

M18-39

168

35K→23M

21.8 - 23.0 mi

Top 3%
×5stories
+23ft-63ft

Overall

685

Males

645

M18-39

645

23M→24M

23.0 - 24.0 mi

Top 7%
×6stories
+12ft-82ft

Overall

1856

Males

1742

M18-39

1742

24M→40K

24.0 - 24.9 mi

Top 18%
×1story
+6ft-20ft

Overall

4903

Males

4270

M18-39

4270

40K→25.2M

24.9 - 25.2 mi

Top 23%
×1story
+13ft-16ft

Overall

6214

Males

5050

M18-39

5050

25.2M→Finish

25.2 - 26.2 mi

Top 11%
×2stories
+22ft-21ft

Overall

2818

Males

2555

M18-39

2555

Passing Analysis

Category:
Athletes Passed
7
Passed By
25
Net Change
-18
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#34
5K → 10K30+3#34#31
10K → 15K10+1#31#30
15K → 20K000#30#30
20K → Half000#30#30
Half → 25K20+2#30#28
25K → 30K000#28#28
30K → 20M000#28#28
20M → 21M000#28#28
21M → 35K000#28#28
35K → 23M13-2#28#30
23M → 24M01-1#30#31
24M → 40K02-2#31#33
40K → 25.2M07-7#33#40
25.2M → Finish012-12#40#52
TOTALS725-18
📊

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