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BOSTON MARATHON 2023

Amby Burfoot

Bib: 1968•M

CT

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M75-79)
#0 / 49
Top 41%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
31:45
Rank: #24000
Start → 5K
31:45 | 10:13/mi
10K· 6.21 mi
1:03:55
Rank: #24234 (-234)
5K → 10K
32:10 | 10:21/mi
15K· 9.32 mi
1:36:44
Rank: #24382 (-148)
10K → 15K
32:49 | 10:34/mi
20K· 12.43 mi
2:08:51
Rank: #24147 (+235)
15K → 20K
32:07 | 10:20/mi
Half· 13.11 mi
2:15:57
Rank: #24145 (+2)
20K → Half
7:06 | 10:24/mi
25K· 15.53 mi
2:41:43
Rank: #23988 (+157)
Half → 25K
25:46 | 10:38/mi
30K· 18.64 mi
3:16:10
Rank: #23857 (+131)
25K → 30K
34:27 | 11:05/mi
20M
3:31:21
Rank: #23786 (+71)
30K → 20M
15:11 | 11:10/mi
21M
3:43:37
Rank: #23754 (+32)
20M → 21M
12:16 | 12:16/mi
35K· 21.75 mi
3:51:41
Rank: #23734 (+20)
21M → 35K
8:04 | 10:47/mi
23M
4:05:16
Rank: #23654 (+80)
35K → 23M
13:35 | 10:51/mi
24M
4:15:48
Rank: #23591 (+63)
23M → 24M
10:32 | 10:32/mi
40K· 24.85 mi
4:25:16
Rank: #23571 (+20)
24M → 40K
9:28 | 11:04/mi
25.2M
4:29:20
Rank: #23558 (+13)
40K → 25.2M
4:04 | 11:48/mi
Finish· 26.22 mi
4:40:45
Rank: #23596 (-38)
25.2M → Finish
11:25 | 11:12/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:15:57
Pace10:22 /mi
2nd Half
Distance13.11 mi
Time2:24:48
Pace11:03 /mi
📊Positive Split: 6.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:02:4531:4510:1331:45
10:13
-
10K
6.21 mi11:34:551:03:5510:1732:10
10:21
+0:08
15K
9.32 mi12:07:441:36:4410:2332:49
10:34
+0:13
20K
12.43 mi12:39:512:08:5110:2232:07
10:20
-0:14
Half
13.11 mi12:46:572:15:5710:227:06
10:24
+0:04
25K
15.53 mi13:12:432:41:4310:2525:46
10:38
+0:14
30K
18.64 mi13:47:103:16:1010:3134:27
11:05
+0:27
20M
20.00 mi14:02:213:31:2110:3415:11
11:10
+0:05
21M
21.00 mi14:14:373:43:3710:3912:16
12:16
+1:06
35K
21.75 mi14:22:413:51:4110:398:04
10:47
-1:29
23M
23.00 mi14:36:164:05:1610:4013:35
10:51
+0:04
24M
24.00 mi14:46:484:15:4810:4010:32
10:32
-0:19
40K
24.85 mi14:56:164:25:1610:409:28
11:04
+0:32
25.2M
25.20 mi15:00:204:29:2010:414:04
11:48
+0:44
Finish
26.22 mi15:11:454:40:4510:4311:25
11:12
-0:36

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

10:13 /mi

Average Pace

10:43 /mi

Slowest Pace

12:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:43:08

37% of race

Time at Steady Pace

1:30:46

32% of race

Time at Slower Pace

1:26:51

31% of race

Average Pace: 10:42 /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 mi11:02:4531:4510:1331:45
10:13
#24000
10K
6.21 mi11:34:551:03:5510:1732:10
10:21
#24234
15K
9.32 mi12:07:441:36:4410:2332:49
10:34
#24382
20K
12.43 mi12:39:512:08:5110:2232:07
10:20
#24147
Half
13.11 mi12:46:572:15:5710:227:06
10:24
#24145
25K
15.53 mi13:12:432:41:4310:2525:46
10:38
#23988
30K
18.64 mi13:47:103:16:1010:3134:27
11:05
#23857
20M
20.00 mi14:02:213:31:2110:3415:11
11:10
#23786
21M
21.00 mi14:14:373:43:3710:3912:16
12:16
#23754
35K
21.75 mi14:22:413:51:4110:398:04
10:47
#23734
23M
23.00 mi14:36:164:05:1610:4013:35
10:51
#23654
24M
24.00 mi14:46:484:15:4810:4010:32
10:32
#23591
40K
24.85 mi14:56:164:25:1610:409:28
11:04
#23571
25.2M
25.20 mi15:00:204:29:2010:414:04
11:48
#23558
Finish
26.22 mi15:11:454:40:4510:4311:25
11:12
#23596
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM75-79Seg. OverallSeg. MalesSeg. M75-79
5K3.11 mi3.11 mi24000140871408724565(Top 92%)14329(Top 94%)14329(Top 29243%)
10K6.21 mi3.10 mi24234-23414196-10914196-10924403(Top 92%)14265(Top 94%)14265(Top 29112%)
15K9.32 mi3.11 mi24382-14814264-6814264-6824565(Top 92%)14329(Top 94%)14329(Top 29243%)
20K12.43 mi3.11 mi24147+23514150+11414150+11423538(Top 88%)13863(Top 91%)13863(Top 28292%)
Half13.11 mi0.68 mi24145+214144+614144+624017(Top 90%)14073(Top 93%)14073(Top 28720%)
25K15.53 mi2.42 mi23988+15714076+6814076+6823401(Top 88%)13764(Top 91%)13764(Top 28090%)
30K18.64 mi3.11 mi23857+13113994+8213994+8223219(Top 87%)13618(Top 90%)13618(Top 27792%)
20M20.00 mi1.36 mi23786+7113958+3613958+3622976(Top 86%)13457(Top 89%)13457(Top 27463%)
21M21.00 mi1.00 mi23754+3213929+2913929+2923146(Top 87%)13506(Top 89%)13506(Top 27563%)
35K21.75 mi0.75 mi23734+2013918+1113918+1122887(Top 86%)13330(Top 88%)13330(Top 27204%)
23M23.00 mi1.25 mi23654+8013877+4113877+4122057(Top 83%)12934(Top 85%)12934(Top 26396%)
24M24.00 mi1.00 mi23591+6313837+4013837+4022102(Top 83%)12927(Top 85%)12927(Top 26382%)
40K24.85 mi0.85 mi23571+2013822+1513822+1522500(Top 85%)13083(Top 86%)13083(Top 26700%)
25.2M25.20 mi0.35 mi23558+1313808+1413808+1422125(Top 83%)12915(Top 85%)12915(Top 26357%)
Finish26.22 mi1.02 mi23596-3813816-813816-824295(Top 91%)13973(Top 92%)13973(Top 28516%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 92%
×21stories
+97ft-345ft

Overall

24565

Males

14329

M75-79

14329

5K→10K

3.1 - 6.2 mi

Top 92%
×5stories
+79ft-138ft

Overall

24403

Males

14265

M75-79

14265

10K→15K

6.2 - 9.3 mi

Top 92%
×3stories
+67ft-78ft

Overall

24565

Males

14329

M75-79

14329

15K→20K

9.3 - 12.4 mi

Top 88%
×5stories
+106ft-86ft

Overall

23538

Males

13863

M75-79

13863

20K→Half

12.4 - 13.1 mi

Top 90%
×2stories
+19ft-37ft

Overall

24017

Males

14073

M75-79

14073

Half→25K

13.1 - 15.5 mi

Top 88%
×4stories
+66ft-88ft

Overall

23401

Males

13764

M75-79

13764

25K→30K

15.5 - 18.6 mi

Top 87%
×9stories
+181ft-148ft

Overall

23219

Males

13618

M75-79

13618

30K→20M

18.6 - 20.0 mi

Top 86%
×5stories
+64ft-50ft

Overall

22976

Males

13457

M75-79

13457

20M→21M

20.0 - 21.0 mi

Top 87%
×8stories
+106ft-24ft

Overall

23146

Males

13506

M75-79

13506

21M→35K

21.0 - 21.8 mi

Top 86%
×7stories
+17ft-86ft

Overall

22887

Males

13330

M75-79

13330

35K→23M

21.8 - 23.0 mi

Top 83%
×5stories
+23ft-63ft

Overall

22057

Males

12934

M75-79

12934

23M→24M

23.0 - 24.0 mi

Top 83%
×6stories
+12ft-82ft

Overall

22102

Males

12927

M75-79

12927

24M→40K

24.0 - 24.9 mi

Top 85%
×1story
+6ft-20ft

Overall

22500

Males

13083

M75-79

13083

40K→25.2M

24.9 - 25.2 mi

Top 83%
×1story
+13ft-16ft

Overall

22125

Males

12915

M75-79

12915

25.2M→Finish

25.2 - 26.2 mi

Top 91%
×2stories
+22ft-21ft

Overall

24295

Males

13973

M75-79

13973

Passing Analysis

Category:
Athletes Passed
1231
Passed By
827
Net Change
+404
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24000
5K → 10K102336-234#24000#24234
10K → 15K73221-148#24234#24382
15K → 20K25116+235#24382#24147
20K → Half2220+2#24147#24145
Half → 25K17922+157#24145#23988
25K → 30K18251+131#23988#23857
30K → 20M9120+71#23857#23786
20M → 21M6331+32#23786#23754
21M → 35K3717+20#23754#23734
35K → 23M9212+80#23734#23654
23M → 24M674+63#23654#23591
24M → 40K3313+20#23591#23571
40K → 25.2M218+13#23571#23558
25.2M → Finish1856-38#23558#23596
TOTALS1231827+404
📊

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