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BOSTON MARATHON 2023

Scott Ghelfi

Bib: 8989•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 40%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 45%
Division (M60-64)
#0 / 1110
Top 11%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:34
Rank: #10387
Start → 5K
23:34 | 7:35/mi
10K· 6.21 mi
46:49
Rank: #10339 (+48)
5K → 10K
23:15 | 7:29/mi
15K· 9.32 mi
1:10:25
Rank: #10541 (-202)
10K → 15K
23:36 | 7:36/mi
20K· 12.43 mi
1:34:47
Rank: #10936 (-395)
15K → 20K
24:22 | 7:51/mi
Half· 13.11 mi
1:39:57
Rank: #10930 (+6)
20K → Half
5:10 | 7:34/mi
25K· 15.53 mi
1:58:56
Rank: #10949 (-19)
Half → 25K
18:59 | 7:50/mi
30K· 18.64 mi
2:23:29
Rank: #10748 (+201)
25K → 30K
24:33 | 7:54/mi
20M
2:34:18
Rank: #10683 (+65)
30K → 20M
10:49 | 7:58/mi
21M
2:42:48
Rank: #10636 (+47)
20M → 21M
8:30 | 8:30/mi
35K· 21.75 mi
2:49:05
Rank: #10773 (-137)
21M → 35K
6:17 | 8:24/mi
23M
2:59:10
Rank: #10721 (+52)
35K → 23M
10:05 | 8:03/mi
24M
3:07:11
Rank: #10730 (-9)
23M → 24M
8:01 | 8:01/mi
40K· 24.85 mi
3:14:18
Rank: #10769 (-39)
24M → 40K
7:07 | 8:19/mi
25.2M
3:17:23
Rank: #10783 (-14)
40K → 25.2M
3:05 | 8:56/mi
Finish· 26.22 mi
3:25:15
Rank: #10742 (+41)
25.2M → Finish
7:52 | 7:43/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:57
Pace7:37 /mi
2nd Half
Distance13.11 mi
Time1:45:18
Pace8:02 /mi
📊Positive Split: 5.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:4823:347:3523:34
7:35
-
10K
6.21 mi11:12:0346:497:3223:15
7:29
-0:06
15K
9.32 mi11:35:391:10:257:3323:36
7:36
+0:07
20K
12.43 mi12:00:011:34:477:3824:22
7:51
+0:15
Half
13.11 mi12:05:111:39:577:375:10
7:34
-0:17
25K
15.53 mi12:24:101:58:567:3918:59
7:50
+0:16
30K
18.64 mi12:48:432:23:297:4224:33
7:54
+0:04
20M
20.00 mi12:59:322:34:187:4310:49
7:58
+0:04
21M
21.00 mi13:08:022:42:487:458:30
8:30
+0:32
35K
21.75 mi13:14:192:49:057:466:17
8:24
-0:06
23M
23.00 mi13:24:242:59:107:4710:05
8:03
-0:21
24M
24.00 mi13:32:253:07:117:488:01
8:01
-0:02
40K
24.85 mi13:39:323:14:187:497:07
8:19
+0:18
25.2M
25.20 mi13:42:373:17:237:503:05
8:56
+0:37
Finish
26.22 mi13:50:293:25:157:507:52
7:43
-1:13

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

7:29 /mi

Average Pace

7:50 /mi

Slowest Pace

8:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:00:16

88% of race

Time at Steady Pace

21:54

11% of race

Time at Slower Pace

3:05

2% of race

Average Pace: 7:50 /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 mi10:48:4823:347:3523:34
7:35
#10387
10K
6.21 mi11:12:0346:497:3223:15
7:29
#10339
15K
9.32 mi11:35:391:10:257:3323:36
7:36
#10541
20K
12.43 mi12:00:011:34:477:3824:22
7:51
#10936
Half
13.11 mi12:05:111:39:577:375:10
7:34
#10930
25K
15.53 mi12:24:101:58:567:3918:59
7:50
#10949
30K
18.64 mi12:48:432:23:297:4224:33
7:54
#10748
20M
20.00 mi12:59:322:34:187:4310:49
7:58
#10683
21M
21.00 mi13:08:022:42:487:458:30
8:30
#10636
35K
21.75 mi13:14:192:49:057:466:17
8:24
#10773
23M
23.00 mi13:24:242:59:107:4710:05
8:03
#10721
24M
24.00 mi13:32:253:07:117:488:01
8:01
#10730
40K
24.85 mi13:39:323:14:187:497:07
8:19
#10769
25.2M
25.20 mi13:42:373:17:237:503:05
8:56
#10783
Finish
26.22 mi13:50:293:25:157:507:52
7:43
#10742
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi103878346834610974(Top 41%)8631(Top 57%)8631(Top 778%)
10K6.21 mi3.10 mi10339+488329+178329+1710310(Top 39%)8334(Top 55%)8334(Top 751%)
15K9.32 mi3.11 mi10541-2028442-1138442-11310974(Top 41%)8631(Top 57%)8631(Top 778%)
20K12.43 mi3.11 mi10936-3958617-1758617-17512080(Top 45%)9045(Top 60%)9045(Top 815%)
Half13.11 mi0.68 mi10930+68611+68611+610771(Top 40%)8497(Top 56%)8497(Top 765%)
25K15.53 mi2.42 mi10949-198609+28609+211327(Top 43%)8634(Top 57%)8634(Top 778%)
30K18.64 mi3.11 mi10748+2018459+1508459+15010152(Top 38%)7907(Top 52%)7907(Top 712%)
20M20.00 mi1.36 mi10683+658393+668393+669960(Top 37%)7742(Top 51%)7742(Top 697%)
21M21.00 mi1.00 mi10636+478353+408353+4010477(Top 39%)7846(Top 52%)7846(Top 707%)
35K21.75 mi0.75 mi10773-1378397-448397-4414656(Top 55%)9707(Top 64%)9707(Top 875%)
23M23.00 mi1.25 mi10721+528336+618336+6110122(Top 38%)7553(Top 50%)7553(Top 680%)
24M24.00 mi1.00 mi10730-98321+158321+1511326(Top 43%)8057(Top 53%)8057(Top 726%)
40K24.85 mi0.85 mi10769-398320+18320+112176(Top 46%)8386(Top 55%)8386(Top 755%)
25.2M25.20 mi0.35 mi10783-148313+78313+712106(Top 45%)8300(Top 55%)8300(Top 748%)
Finish26.22 mi1.02 mi10742+418260+538260+5310082(Top 38%)7336(Top 48%)7336(Top 661%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 41%
×21stories
+97ft-345ft

Overall

10974

Males

8631

M60-64

8631

5K→10K

3.1 - 6.2 mi

Top 39%
×5stories
+79ft-138ft

Overall

10310

Males

8334

M60-64

8334

10K→15K

6.2 - 9.3 mi

Top 41%
×3stories
+67ft-78ft

Overall

10974

Males

8631

M60-64

8631

15K→20K

9.3 - 12.4 mi

Top 45%
×5stories
+106ft-86ft

Overall

12080

Males

9045

M60-64

9045

20K→Half

12.4 - 13.1 mi

Top 40%
×2stories
+19ft-37ft

Overall

10771

Males

8497

M60-64

8497

Half→25K

13.1 - 15.5 mi

Top 43%
×4stories
+66ft-88ft

Overall

11327

Males

8634

M60-64

8634

25K→30K

15.5 - 18.6 mi

Top 38%
×9stories
+181ft-148ft

Overall

10152

Males

7907

M60-64

7907

30K→20M

18.6 - 20.0 mi

Top 37%
×5stories
+64ft-50ft

Overall

9960

Males

7742

M60-64

7742

20M→21M

20.0 - 21.0 mi

Top 39%
×8stories
+106ft-24ft

Overall

10477

Males

7846

M60-64

7846

21M→35K

21.0 - 21.8 mi

Top 55%
×7stories
+17ft-86ft

Overall

14656

Males

9707

M60-64

9707

35K→23M

21.8 - 23.0 mi

Top 38%
×5stories
+23ft-63ft

Overall

10122

Males

7553

M60-64

7553

23M→24M

23.0 - 24.0 mi

Top 43%
×6stories
+12ft-82ft

Overall

11326

Males

8057

M60-64

8057

24M→40K

24.0 - 24.9 mi

Top 46%
×1story
+6ft-20ft

Overall

12176

Males

8386

M60-64

8386

40K→25.2M

24.9 - 25.2 mi

Top 45%
×1story
+13ft-16ft

Overall

12106

Males

8300

M60-64

8300

25.2M→Finish

25.2 - 26.2 mi

Top 38%
×2stories
+22ft-21ft

Overall

10082

Males

7336

M60-64

7336

Passing Analysis

Category:
Athletes Passed
1510*
Passed By
1865
Net Change
-355
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10387
5K → 10K321*273+48#10387#10339
10K → 15K117319-202#10339#10541
15K → 20K60455-395#10541#10936
20K → Half2822+6#10936#10930
Half → 25K117136-19#10930#10949
25K → 30K28786+201#10949#10748
30K → 20M111*46+65#10748#10683
20M → 21M9144+47#10683#10636
21M → 35K25162-137#10636#10773
35K → 23M11664+52#10773#10721
23M → 24M5867-9#10721#10730
24M → 40K62101-39#10730#10769
40K → 25.2M2236-14#10769#10783
25.2M → Finish9554+41#10783#10742
TOTALS1510*1865-355

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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