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BOSTON MARATHON 2023

Graham Shelby

Bib: 3795•M

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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
22:17
Rank: #7343
Start → 5K
22:17 | 7:10/mi
10K· 6.21 mi
44:46
Rank: #7801 (-458)
5K → 10K
22:29 | 7:14/mi
15K· 9.32 mi
1:07:30
Rank: #8060 (-259)
10K → 15K
22:44 | 7:19/mi
20K· 12.43 mi
1:30:51
Rank: #8320 (-260)
15K → 20K
23:21 | 7:31/mi
Half· 13.11 mi
1:36:01
Rank: #8441 (-121)
20K → Half
5:10 | 7:34/mi
25K· 15.53 mi
1:54:52
Rank: #8798 (-357)
Half → 25K
18:51 | 7:46/mi
30K· 18.64 mi
2:20:43
Rank: #9581 (-783)
25K → 30K
25:51 | 8:19/mi
20M
2:33:08
Rank: #10212 (-631)
30K → 20M
12:25 | 9:08/mi
21M
2:43:39
Rank: #10949 (-737)
20M → 21M
10:31 | 10:31/mi
35K· 21.75 mi
2:50:28
Rank: #11296 (-347)
21M → 35K
6:49 | 9:07/mi
23M
3:03:54
Rank: #12421 (-1125)
35K → 23M
13:26 | 10:44/mi
24M
3:13:31
Rank: #12865 (-444)
23M → 24M
9:37 | 9:37/mi
40K· 24.85 mi
3:21:57
Rank: #13201 (-336)
24M → 40K
8:26 | 9:52/mi
25.2M
3:25:38
Rank: #13333 (-132)
40K → 25.2M
3:41 | 10:41/mi
Finish· 26.22 mi
3:34:53
Rank: #13599 (-266)
25.2M → Finish
9:15 | 9:05/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:01
Pace7:19 /mi
2nd Half
Distance13.11 mi
Time1:58:52
Pace9:04 /mi
📊Positive Split: 23.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:4922:177:1022:17
7:10
-
10K
6.21 mi10:46:1844:467:1222:29
7:14
+0:04
15K
9.32 mi11:09:021:07:307:1522:44
7:19
+0:05
20K
12.43 mi11:32:231:30:517:1923:21
7:31
+0:12
Half
13.11 mi11:37:331:36:017:195:10
7:34
+0:03
25K
15.53 mi11:56:241:54:527:2418:51
7:46
+0:12
30K
18.64 mi12:22:152:20:437:3325:51
8:19
+0:33
20M
20.00 mi12:34:402:33:087:3912:25
9:08
+0:49
21M
21.00 mi12:45:112:43:397:4810:31
10:31
+1:23
35K
21.75 mi12:52:002:50:287:506:49
9:07
-1:24
23M
23.00 mi13:05:263:03:548:0013:26
10:44
+1:37
24M
24.00 mi13:15:033:13:318:049:37
9:37
-1:07
40K
24.85 mi13:23:293:21:578:088:26
9:52
+0:15
25.2M
25.20 mi13:27:103:25:388:103:41
10:41
+0:49
Finish
26.22 mi13:36:253:34:538:129:15
9:05
-1:36

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

7:10 /mi

Average Pace

8:12 /mi

Slowest Pace

10:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:20:43

65% of race

Time at Steady Pace

38:06

18% of race

Time at Slower Pace

36:04

17% of race

Average Pace: 8:12 /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 mi10:23:4922:177:1022:17
7:10
#7343
10K
6.21 mi10:46:1844:467:1222:29
7:14
#7801
15K
9.32 mi11:09:021:07:307:1522:44
7:19
#8060
20K
12.43 mi11:32:231:30:517:1923:21
7:31
#8320
Half
13.11 mi11:37:331:36:017:195:10
7:34
#8441
25K
15.53 mi11:56:241:54:527:2418:51
7:46
#8798
30K
18.64 mi12:22:152:20:437:3325:51
8:19
#9581
20M
20.00 mi12:34:402:33:087:3912:25
9:08
#10212
21M
21.00 mi12:45:112:43:397:4810:31
10:31
#10949
35K
21.75 mi12:52:002:50:287:506:49
9:07
#11296
23M
23.00 mi13:05:263:03:548:0013:26
10:44
#12421
24M
24.00 mi13:15:033:13:318:049:37
9:37
#12865
40K
24.85 mi13:23:293:21:578:088:26
9:52
#13201
25.2M
25.20 mi13:27:103:25:388:103:41
10:41
#13333
Finish
26.22 mi13:36:253:34:538:129:15
9:05
#13599
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi7343653665368701(Top 33%)7371(Top 49%)7371(Top 139%)
10K6.21 mi3.10 mi7801-4586843-3076843-3078375(Top 31%)7185(Top 47%)7185(Top 136%)
15K9.32 mi3.11 mi8060-2596991-1486991-1488701(Top 33%)7371(Top 49%)7371(Top 139%)
20K12.43 mi3.11 mi8320-2607147-1567147-1569436(Top 35%)7762(Top 51%)7762(Top 147%)
Half13.11 mi0.68 mi8441-1217212-657212-6510810(Top 41%)8536(Top 56%)8536(Top 162%)
25K15.53 mi2.42 mi8798-3577416-2047416-20410893(Top 41%)8453(Top 56%)8453(Top 160%)
30K18.64 mi3.11 mi9581-7837858-4427858-44213137(Top 49%)9289(Top 61%)9289(Top 176%)
20M20.00 mi1.36 mi10212-6318170-3128170-31217229(Top 65%)10907(Top 72%)10907(Top 206%)
21M21.00 mi1.00 mi10949-7378497-3278497-32719626(Top 74%)11883(Top 78%)11883(Top 225%)
35K21.75 mi0.75 mi11296-3478654-1578654-15718337(Top 69%)11283(Top 74%)11283(Top 213%)
23M23.00 mi1.25 mi12421-11259118-4649118-46421816(Top 82%)12815(Top 84%)12815(Top 242%)
24M24.00 mi1.00 mi12865-4449279-1619279-16119604(Top 74%)11813(Top 78%)11813(Top 224%)
40K24.85 mi0.85 mi13201-3369404-1259404-12519567(Top 73%)11727(Top 77%)11727(Top 222%)
25.2M25.20 mi0.35 mi13333-1329442-389442-3819600(Top 74%)11724(Top 77%)11724(Top 222%)
Finish26.22 mi1.02 mi13599-2669535-939535-9318334(Top 69%)11227(Top 74%)11227(Top 212%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21stories
+97ft-345ft

Overall

8701

Males

7371

M18-39

7371

5K→10K

3.1 - 6.2 mi

Top 31%
×5stories
+79ft-138ft

Overall

8375

Males

7185

M18-39

7185

10K→15K

6.2 - 9.3 mi

Top 33%
×3stories
+67ft-78ft

Overall

8701

Males

7371

M18-39

7371

15K→20K

9.3 - 12.4 mi

Top 35%
×5stories
+106ft-86ft

Overall

9436

Males

7762

M18-39

7762

20K→Half

12.4 - 13.1 mi

Top 41%
×2stories
+19ft-37ft

Overall

10810

Males

8536

M18-39

8536

Half→25K

13.1 - 15.5 mi

Top 41%
×4stories
+66ft-88ft

Overall

10893

Males

8453

M18-39

8453

25K→30K

15.5 - 18.6 mi

Top 49%
×9stories
+181ft-148ft

Overall

13137

Males

9289

M18-39

9289

30K→20M

18.6 - 20.0 mi

Top 65%
×5stories
+64ft-50ft

Overall

17229

Males

10907

M18-39

10907

20M→21M

20.0 - 21.0 mi

Top 74%
×8stories
+106ft-24ft

Overall

19626

Males

11883

M18-39

11883

21M→35K

21.0 - 21.8 mi

Top 69%
×7stories
+17ft-86ft

Overall

18337

Males

11283

M18-39

11283

35K→23M

21.8 - 23.0 mi

Top 82%
×5stories
+23ft-63ft

Overall

21816

Males

12815

M18-39

12815

23M→24M

23.0 - 24.0 mi

Top 74%
×6stories
+12ft-82ft

Overall

19604

Males

11813

M18-39

11813

24M→40K

24.0 - 24.9 mi

Top 73%
×1story
+6ft-20ft

Overall

19567

Males

11727

M18-39

11727

40K→25.2M

24.9 - 25.2 mi

Top 74%
×1story
+13ft-16ft

Overall

19600

Males

11724

M18-39

11724

25.2M→Finish

25.2 - 26.2 mi

Top 69%
×2stories
+22ft-21ft

Overall

18334

Males

11227

M18-39

11227

Passing Analysis

Category:
Athletes Passed
346
Passed By
6601
Net Change
-6256
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7343
5K → 10K81539-458#7343#7801
10K → 15K57316-259#7801#8060
15K → 20K59319-260#8060#8320
20K → Half2123-121#8320#8441
Half → 25K28385-357#8441#8798
25K → 30K33816-783#8798#9581
30K → 20M11641-631#9581#10212
20M → 21M6743-737#10212#10949
21M → 35K6353-347#10949#11296
35K → 23M51130-1125#11296#12421
23M → 24M10454-444#12421#12865
24M → 40K12348-336#12865#13201
40K → 25.2M14146-132#13201#13333
25.2M → Finish22288-266#13333#13599
TOTALS3466601-6256
📊

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