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BOSTON MARATHON 2023

Adam Greenfield

Bib: 4271•M

VA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 21%
Gender (Male)
#0 / 15176
Top 34%
Masters (Masters Men)
#0 / 9891
Top 20%
Division (M40-44)
#0 / 2241
Top 45%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:34
Rank: #5875
Start → 5K
21:34 | 6:56/mi
10K· 6.21 mi
43:05
Rank: #6064 (-189)
5K → 10K
21:31 | 6:56/mi
15K· 9.32 mi
1:04:46
Rank: #6185 (-121)
10K → 15K
21:41 | 6:59/mi
20K· 12.43 mi
1:26:19
Rank: #6014 (+171)
15K → 20K
21:33 | 6:56/mi
Half· 13.11 mi
1:31:01
Rank: #6014
20K → Half
4:42 | 6:53/mi
25K· 15.53 mi
1:47:59
Rank: #5914 (+100)
Half → 25K
16:58 | 7:00/mi
30K· 18.64 mi
2:10:29
Rank: #5813 (+101)
25K → 30K
22:30 | 7:15/mi
20M
2:20:18
Rank: #5735 (+78)
30K → 20M
9:49 | 7:13/mi
21M
2:28:03
Rank: #5712 (+23)
20M → 21M
7:45 | 7:45/mi
35K· 21.75 mi
2:33:21
Rank: #5696 (+16)
21M → 35K
5:18 | 7:05/mi
23M
2:42:34
Rank: #5637 (+59)
35K → 23M
9:13 | 7:22/mi
24M
2:50:01
Rank: #5632 (+5)
23M → 24M
7:27 | 7:27/mi
40K· 24.85 mi
2:56:30
Rank: #5646 (-14)
24M → 40K
6:29 | 7:35/mi
25.2M
2:59:21
Rank: #5656 (-10)
40K → 25.2M
2:51 | 8:16/mi
Finish· 26.22 mi
3:06:56
Rank: #5681 (-25)
25.2M → Finish
7:35 | 7:26/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:31:01
Pace6:57 /mi
2nd Half
Distance13.11 mi
Time1:35:55
Pace7:19 /mi
📊Positive Split: 5.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:4421:346:5621:34
6:56
-
10K
6.21 mi10:46:1543:056:5621:31
6:56
0:00
15K
9.32 mi11:07:561:04:466:5721:41
6:59
+0:03
20K
12.43 mi11:29:291:26:196:5721:33
6:56
-0:03
Half
13.11 mi11:34:111:31:016:574:42
6:53
-0:03
25K
15.53 mi11:51:091:47:596:5716:58
7:00
+0:07
30K
18.64 mi12:13:392:10:297:0022:30
7:15
+0:15
20M
20.00 mi12:23:282:20:187:019:49
7:13
-0:02
21M
21.00 mi12:31:132:28:037:037:45
7:45
+0:32
35K
21.75 mi12:36:312:33:217:035:18
7:05
-0:40
23M
23.00 mi12:45:442:42:347:049:13
7:22
+0:17
24M
24.00 mi12:53:112:50:017:057:27
7:27
+0:05
40K
24.85 mi12:59:402:56:307:066:29
7:35
+0:08
25.2M
25.20 mi13:02:312:59:217:072:51
8:16
+0:41
Finish
26.22 mi13:10:063:06:567:087:35
7:26
-0:50

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

6:53 /mi

Average Pace

7:08 /mi

Slowest Pace

8:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:47:59

58% of race

Time at Steady Pace

46:50

25% of race

Time at Slower Pace

32:07

17% of race

Average Pace: 7:08 /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 mi10:24:4421:346:5621:34
6:56
#5875
10K
6.21 mi10:46:1543:056:5621:31
6:56
#6064
15K
9.32 mi11:07:561:04:466:5721:41
6:59
#6185
20K
12.43 mi11:29:291:26:196:5721:33
6:56
#6014
Half
13.11 mi11:34:111:31:016:574:42
6:53
#6014
25K
15.53 mi11:51:091:47:596:5716:58
7:00
#5914
30K
18.64 mi12:13:392:10:297:0022:30
7:15
#5813
20M
20.00 mi12:23:282:20:187:019:49
7:13
#5735
21M
21.00 mi12:31:132:28:037:037:45
7:45
#5712
35K
21.75 mi12:36:312:33:217:035:18
7:05
#5696
23M
23.00 mi12:45:442:42:347:049:13
7:22
#5637
24M
24.00 mi12:53:112:50:017:057:27
7:27
#5632
40K
24.85 mi12:59:402:56:307:066:29
7:35
#5646
25.2M
25.20 mi13:02:312:59:217:072:51
8:16
#5656
Finish
26.22 mi13:10:063:06:567:087:35
7:26
#5681
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi5875538753876415(Top 24%)5784(Top 38%)5784(Top 258%)
10K6.21 mi3.10 mi6064-1895536-1495536-1496307(Top 24%)5706(Top 38%)5706(Top 255%)
15K9.32 mi3.11 mi6185-1215622-865622-866415(Top 24%)5784(Top 38%)5784(Top 258%)
20K12.43 mi3.11 mi6014+1715486+1365486+1365579(Top 21%)5127(Top 34%)5127(Top 229%)
Half13.11 mi0.68 mi60145487-15487-15902(Top 22%)5411(Top 36%)5411(Top 241%)
25K15.53 mi2.42 mi5914+1005413+745413+745563(Top 21%)5118(Top 34%)5118(Top 228%)
30K18.64 mi3.11 mi5813+1015322+915322+915716(Top 21%)5158(Top 34%)5158(Top 230%)
20M20.00 mi1.36 mi5735+785250+725250+725237(Top 20%)4729(Top 31%)4729(Top 211%)
21M21.00 mi1.00 mi5712+235227+235227+235889(Top 22%)5116(Top 34%)5116(Top 228%)
35K21.75 mi0.75 mi5696+165208+195208+195794(Top 22%)5084(Top 34%)5084(Top 227%)
23M23.00 mi1.25 mi5637+595147+615147+615629(Top 21%)4931(Top 32%)4931(Top 220%)
24M24.00 mi1.00 mi5632+55129+185129+187340(Top 28%)5910(Top 39%)5910(Top 264%)
40K24.85 mi0.85 mi5646-145130-15130-17174(Top 27%)5722(Top 38%)5722(Top 255%)
25.2M25.20 mi0.35 mi5656-105129+15129+17960(Top 30%)6120(Top 40%)6120(Top 273%)
Finish26.22 mi1.02 mi5681-255134-55134-58047(Top 30%)6183(Top 41%)6183(Top 276%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 24%
×21stories
+97ft-345ft

Overall

6415

Males

5784

M40-44

5784

5K→10K

3.1 - 6.2 mi

Top 24%
×5stories
+79ft-138ft

Overall

6307

Males

5706

M40-44

5706

10K→15K

6.2 - 9.3 mi

Top 24%
×3stories
+67ft-78ft

Overall

6415

Males

5784

M40-44

5784

15K→20K

9.3 - 12.4 mi

Top 21%
×5stories
+106ft-86ft

Overall

5579

Males

5127

M40-44

5127

20K→Half

12.4 - 13.1 mi

Top 22%
×2stories
+19ft-37ft

Overall

5902

Males

5411

M40-44

5411

Half→25K

13.1 - 15.5 mi

Top 21%
×4stories
+66ft-88ft

Overall

5563

Males

5118

M40-44

5118

25K→30K

15.5 - 18.6 mi

Top 21%
×9stories
+181ft-148ft

Overall

5716

Males

5158

M40-44

5158

30K→20M

18.6 - 20.0 mi

Top 20%
×5stories
+64ft-50ft

Overall

5237

Males

4729

M40-44

4729

20M→21M

20.0 - 21.0 mi

Top 22%
×8stories
+106ft-24ft

Overall

5889

Males

5116

M40-44

5116

21M→35K

21.0 - 21.8 mi

Top 22%
×7stories
+17ft-86ft

Overall

5794

Males

5084

M40-44

5084

35K→23M

21.8 - 23.0 mi

Top 21%
×5stories
+23ft-63ft

Overall

5629

Males

4931

M40-44

4931

23M→24M

23.0 - 24.0 mi

Top 28%
×6stories
+12ft-82ft

Overall

7340

Males

5910

M40-44

5910

24M→40K

24.0 - 24.9 mi

Top 27%
×1story
+6ft-20ft

Overall

7174

Males

5722

M40-44

5722

40K→25.2M

24.9 - 25.2 mi

Top 30%
×1story
+13ft-16ft

Overall

7960

Males

6120

M40-44

6120

25.2M→Finish

25.2 - 26.2 mi

Top 30%
×2stories
+22ft-21ft

Overall

8047

Males

6183

M40-44

6183

Passing Analysis

Category:
Athletes Passed
1163
Passed By
969
Net Change
+194
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5875
5K → 10K110299-189#5875#6064
10K → 15K78199-121#6064#6185
15K → 20K19524+171#6185#6014
20K → Half20200#6014#6014
Half → 25K13232+100#6014#5914
25K → 30K16665+101#5914#5813
30K → 20M10224+78#5813#5735
20M → 21M6239+23#5735#5712
21M → 35K4024+16#5712#5696
35K → 23M9738+59#5696#5637
23M → 24M5045+5#5637#5632
24M → 40K3852-14#5632#5646
40K → 25.2M1626-10#5646#5656
25.2M → Finish5782-25#5656#5681
TOTALS1163969+194
📊

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