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BOSTON MARATHON 2023

Matthew Amsterdam

Bib: 25947•M

NY

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
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
28:28
Rank: #21082
Start → 5K
28:28 | 9:10/mi
10K· 6.21 mi
56:53
Rank: #21262 (-180)
5K → 10K
28:25 | 9:09/mi
15K· 9.32 mi
1:25:57
Rank: #21435 (-173)
10K → 15K
29:04 | 9:21/mi
20K· 12.43 mi
1:55:33
Rank: #21503 (-68)
15K → 20K
29:36 | 9:32/mi
Half· 13.11 mi
2:02:12
Rank: #21568 (-65)
20K → Half
6:39 | 9:45/mi
25K· 15.53 mi
2:25:53
Rank: #21571 (-3)
Half → 25K
23:41 | 9:46/mi
30K· 18.64 mi
2:56:17
Rank: #21344 (+227)
25K → 30K
30:24 | 9:47/mi
20M
3:09:42
Rank: #21230 (+114)
30K → 20M
13:25 | 9:52/mi
21M
3:20:34
Rank: #21198 (+32)
20M → 21M
10:52 | 10:52/mi
35K· 21.75 mi
3:27:36
Rank: #21121 (+77)
21M → 35K
7:02 | 9:24/mi
23M
3:40:04
Rank: #21023 (+98)
35K → 23M
12:28 | 9:57/mi
24M
3:49:50
Rank: #20977 (+46)
23M → 24M
9:46 | 9:46/mi
40K· 24.85 mi
3:58:52
Rank: #20976 (+1)
24M → 40K
9:02 | 10:34/mi
25.2M
4:02:25
Rank: #20932 (+44)
40K → 25.2M
3:33 | 10:18/mi
Finish· 26.22 mi
4:12:05
Rank: #20884 (+48)
25.2M → Finish
9:40 | 9:29/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:02:12
Pace9:19 /mi
2nd Half
Distance13.11 mi
Time2:09:53
Pace9:54 /mi
📊Positive Split: 6.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:0628:289:1028:28
9:10
-
10K
6.21 mi12:13:3156:539:0928:25
9:09
-0:01
15K
9.32 mi12:42:351:25:579:1329:04
9:21
+0:12
20K
12.43 mi13:12:111:55:339:1829:36
9:32
+0:11
Half
13.11 mi13:18:502:02:129:196:39
9:45
+0:13
25K
15.53 mi13:42:312:25:539:2323:41
9:46
+0:01
30K
18.64 mi14:12:552:56:179:2730:24
9:47
+0:01
20M
20.00 mi14:26:203:09:429:2913:25
9:52
+0:05
21M
21.00 mi14:37:123:20:349:3310:52
10:52
+1:00
35K
21.75 mi14:44:143:27:369:337:02
9:24
-1:28
23M
23.00 mi14:56:423:40:049:3412:28
9:57
+0:33
24M
24.00 mi15:06:283:49:509:359:46
9:46
-0:11
40K
24.85 mi15:15:303:58:529:379:02
10:34
+0:48
25.2M
25.20 mi15:19:034:02:259:373:33
10:18
-0:16
Finish
26.22 mi15:28:434:12:059:379:40
9:29
-0:49

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

9:09 /mi

Average Pace

9:37 /mi

Slowest Pace

10:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:48:38

91% of race

Time at Steady Pace

12:35

5% of race

Time at Slower Pace

10:52

4% of race

Average Pace: 9:37 /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 mi11:45:0628:289:1028:28
9:10
#21082
10K
6.21 mi12:13:3156:539:0928:25
9:09
#21262
15K
9.32 mi12:42:351:25:579:1329:04
9:21
#21435
20K
12.43 mi13:12:111:55:339:1829:36
9:32
#21503
Half
13.11 mi13:18:502:02:129:196:39
9:45
#21568
25K
15.53 mi13:42:312:25:539:2323:41
9:46
#21571
30K
18.64 mi14:12:552:56:179:2730:24
9:47
#21344
20M
20.00 mi14:26:203:09:429:2913:25
9:52
#21230
21M
21.00 mi14:37:123:20:349:3310:52
10:52
#21198
35K
21.75 mi14:44:143:27:369:337:02
9:24
#21121
23M
23.00 mi14:56:423:40:049:3412:28
9:57
#21023
24M
24.00 mi15:06:283:49:509:359:46
9:46
#20977
40K
24.85 mi15:15:303:58:529:379:02
10:34
#20976
25.2M
25.20 mi15:19:034:02:259:373:33
10:18
#20932
Finish
26.22 mi15:28:434:12:059:379:40
9:29
#20884
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi21082126461264621822(Top 82%)13115(Top 86%)13115(Top 248%)
10K6.21 mi3.10 mi21262-18012787-14112787-14121458(Top 81%)12903(Top 85%)12903(Top 244%)
15K9.32 mi3.11 mi21435-17312897-11012897-11021822(Top 82%)13115(Top 86%)13115(Top 248%)
20K12.43 mi3.11 mi21503-6812930-3312930-3321638(Top 81%)13020(Top 86%)13020(Top 246%)
Half13.11 mi0.68 mi21568-6512961-3112961-3122736(Top 85%)13506(Top 89%)13506(Top 256%)
25K15.53 mi2.42 mi21571-312967-612967-621651(Top 81%)12986(Top 86%)12986(Top 246%)
30K18.64 mi3.11 mi21344+22712847+12012847+12020408(Top 77%)12386(Top 82%)12386(Top 234%)
20M20.00 mi1.36 mi21230+11412774+7312774+7320091(Top 75%)12158(Top 80%)12158(Top 230%)
21M21.00 mi1.00 mi21198+3212754+2012754+2020526(Top 77%)12301(Top 81%)12301(Top 233%)
35K21.75 mi0.75 mi21121+7712709+4512709+4519541(Top 73%)11847(Top 78%)11847(Top 224%)
23M23.00 mi1.25 mi21023+9812658+5112658+5119855(Top 75%)11955(Top 79%)11955(Top 226%)
24M24.00 mi1.00 mi20977+4612623+3512623+3520107(Top 76%)12055(Top 79%)12055(Top 228%)
40K24.85 mi0.85 mi20976+112615+812615+821355(Top 80%)12521(Top 83%)12521(Top 237%)
25.2M25.20 mi0.35 mi20932+4412590+2512590+2518443(Top 69%)11235(Top 74%)11235(Top 213%)
Finish26.22 mi1.02 mi20884+4812555+3512555+3520060(Top 75%)12007(Top 79%)12007(Top 227%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 82%
×21stories
+97ft-345ft

Overall

21822

Males

13115

M18-39

13115

5K→10K

3.1 - 6.2 mi

Top 81%
×5stories
+79ft-138ft

Overall

21458

Males

12903

M18-39

12903

10K→15K

6.2 - 9.3 mi

Top 82%
×3stories
+67ft-78ft

Overall

21822

Males

13115

M18-39

13115

15K→20K

9.3 - 12.4 mi

Top 81%
×5stories
+106ft-86ft

Overall

21638

Males

13020

M18-39

13020

20K→Half

12.4 - 13.1 mi

Top 85%
×2stories
+19ft-37ft

Overall

22736

Males

13506

M18-39

13506

Half→25K

13.1 - 15.5 mi

Top 81%
×4stories
+66ft-88ft

Overall

21651

Males

12986

M18-39

12986

25K→30K

15.5 - 18.6 mi

Top 77%
×9stories
+181ft-148ft

Overall

20408

Males

12386

M18-39

12386

30K→20M

18.6 - 20.0 mi

Top 75%
×5stories
+64ft-50ft

Overall

20091

Males

12158

M18-39

12158

20M→21M

20.0 - 21.0 mi

Top 77%
×8stories
+106ft-24ft

Overall

20526

Males

12301

M18-39

12301

21M→35K

21.0 - 21.8 mi

Top 73%
×7stories
+17ft-86ft

Overall

19541

Males

11847

M18-39

11847

35K→23M

21.8 - 23.0 mi

Top 75%
×5stories
+23ft-63ft

Overall

19855

Males

11955

M18-39

11955

23M→24M

23.0 - 24.0 mi

Top 76%
×6stories
+12ft-82ft

Overall

20107

Males

12055

M18-39

12055

24M→40K

24.0 - 24.9 mi

Top 80%
×1story
+6ft-20ft

Overall

21355

Males

12521

M18-39

12521

40K→25.2M

24.9 - 25.2 mi

Top 69%
×1story
+13ft-16ft

Overall

18443

Males

11235

M18-39

11235

25.2M→Finish

25.2 - 26.2 mi

Top 75%
×2stories
+22ft-21ft

Overall

20060

Males

12007

M18-39

12007

Passing Analysis

Category:
Athletes Passed
1403
Passed By
1205
Net Change
+198
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21082
5K → 10K202382-180#21082#21262
10K → 15K91264-173#21262#21435
15K → 20K106174-68#21435#21503
20K → Half1176-65#21503#21568
Half → 25K105108-3#21568#21571
25K → 30K25124+227#21571#21344
30K → 20M13420+114#21344#21230
20M → 21M7947+32#21230#21198
21M → 35K825+77#21198#21121
35K → 23M11618+98#21121#21023
23M → 24M6418+46#21023#20977
24M → 40K3635+1#20977#20976
40K → 25.2M484+44#20976#20932
25.2M → Finish7830+48#20932#20884
TOTALS14031205+198
📊

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