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BOSTON MARATHON 2023

Lawrence Callanan

Bib: 14035•M

MN

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M50-54)
#0 / 2052
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:45/mi
24:05
↑ 97↓ 3451.5%
10K· 6.21 mi
7:40/mi
47:55
↑ 79↓ 1380.4%
15K· 9.32 mi
7:46/mi
1:12:02
↑ 67↓ 78
20K· 12.43 mi
8:02/mi
1:36:58
↑ 106↓ 860.1%
Half· 13.11 mi
8:04/mi
1:42:28
↑ 19↓ 370.5%
25K· 15.53 mi
9:04/mi
2:04:26
↑ 66↓ 880.2%
30K· 18.64 mi
8:59/mi
2:32:22
↑ 181↓ 1480.2%
20M
9:52/mi
2:45:46
↑ 64↓ 500.2%
21M
10:52/mi
2:56:38
↑ 106↓ 241.6%
35K· 21.75 mi
11:02/mi
3:04:53
↑ 17↓ 861.7%
23M
10:03/mi
3:17:28
↑ 23↓ 630.6%
24M
10:19/mi
3:27:47
↓ 821.3%
40K· 24.85 mi
11:04/mi
3:37:15
↓ 200.3%
25.2M
11:48/mi
3:41:19
↑ 13↓ 160.2%
Finish· 26.22 mi
9:33/mi
3:51:03
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:28
Pace7:49 /mi
2nd Half
Distance13.11 mi
Time2:08:35
Pace9:49 /mi
📊Positive Split: 25.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:1324:057:4524:05
7:45
-
10K
6.21 mi11:17:0347:557:4323:50
7:40
-0:05
15K
9.32 mi11:41:101:12:027:4424:07
7:46
+0:06
20K
12.43 mi12:06:061:36:587:4824:56
8:02
+0:16
Half
13.11 mi12:11:361:42:287:495:30
8:04
+0:02
25K
15.53 mi12:33:342:04:268:0121:58
9:04
+1:00
30K
18.64 mi13:01:302:32:228:1027:56
8:59
-0:05
20M
20.00 mi13:14:542:45:468:1713:24
9:52
+0:53
21M
21.00 mi13:25:462:56:388:2510:52
10:52
+1:00
35K
21.75 mi13:34:013:04:538:308:15
11:02
+0:10
23M
23.00 mi13:46:363:17:288:3512:35
10:03
-0:59
24M
24.00 mi13:56:553:27:478:3910:19
10:19
+0:16
40K
24.85 mi14:06:233:37:158:449:28
11:04
+0:45
25.2M
25.20 mi14:10:273:41:198:474:04
11:48
+0:44
Finish
26.22 mi14:20:113:51:038:499:44
9:33
-2:15

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

7:40 /mi

Average Pace

8:49 /mi

Slowest Pace

11:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:42:28

44% of race

Time at Steady Pace

1:25:37

37% of race

Time at Slower Pace

42:58

19% of race

Average Pace: 8:49 /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 mi10:53:1324:057:4524:05
7:45
#11929
10K
6.21 mi11:17:0347:557:4323:50
7:40
#11919
15K
9.32 mi11:41:101:12:027:4424:07
7:46
#12051
20K
12.43 mi12:06:061:36:587:4824:56
8:02
#12426
Half
13.11 mi12:11:361:42:287:495:30
8:04
#12545
25K
15.53 mi12:33:342:04:268:0121:58
9:04
#13944
30K
18.64 mi13:01:302:32:228:1027:56
8:59
#14619
20M
20.00 mi13:14:542:45:468:1713:24
9:52
#15153
21M
21.00 mi13:25:462:56:388:2510:52
10:52
#15605
35K
21.75 mi13:34:013:04:538:308:15
11:02
#16149
23M
23.00 mi13:46:363:17:288:3512:35
10:03
#16494
24M
24.00 mi13:56:553:27:478:3910:19
10:19
#16867
40K
24.85 mi14:06:233:37:158:449:28
11:04
#17237
25.2M
25.20 mi14:10:273:41:198:474:04
11:48
#17405
Finish
26.22 mi14:20:113:51:038:499:44
9:33
#17572
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi119299086908612397(Top 47%)9255(Top 61%)9255(Top 451%)
10K6.21 mi3.10 mi11919+109075+119075+1111990(Top 45%)9111(Top 60%)9111(Top 444%)
15K9.32 mi3.11 mi12051-1329117-429117-4212397(Top 47%)9255(Top 61%)9255(Top 451%)
20K12.43 mi3.11 mi12426-3759248-1319248-13113648(Top 51%)9732(Top 64%)9732(Top 474%)
Half13.11 mi0.68 mi12545-1199300-529300-5214833(Top 56%)10250(Top 68%)10250(Top 500%)
25K15.53 mi2.42 mi13944-13999849-5499849-54919234(Top 72%)11943(Top 79%)11943(Top 582%)
30K18.64 mi3.11 mi14619-67510091-24210091-24217115(Top 64%)10960(Top 72%)10960(Top 534%)
20M20.00 mi1.36 mi15153-53410263-17210263-17220039(Top 75%)12137(Top 80%)12137(Top 591%)
21M21.00 mi1.00 mi15605-45210403-14010403-14020519(Top 77%)12294(Top 81%)12294(Top 599%)
35K21.75 mi0.75 mi16149-54410602-19910602-19923336(Top 88%)13528(Top 89%)13528(Top 659%)
23M23.00 mi1.25 mi16494-34510746-14410746-14420123(Top 76%)12072(Top 80%)12072(Top 588%)
24M24.00 mi1.00 mi16867-37310884-13810884-13821585(Top 81%)12671(Top 83%)12671(Top 617%)
40K24.85 mi0.85 mi17237-37011024-14011024-14022481(Top 84%)13064(Top 86%)13064(Top 637%)
25.2M25.20 mi0.35 mi17405-16811093-6911093-6922099(Top 83%)12889(Top 85%)12889(Top 628%)
Finish26.22 mi1.02 mi17572-16711151-5811151-5820286(Top 76%)12090(Top 80%)12090(Top 589%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 47%
×21story building
+97ft-345ft

Overall

12397

Males

9255

M50-54

9255

5K→10K

3.1 - 6.2 mi

Top 45%
×5story building
+79ft-138ft

Overall

11990

Males

9111

M50-54

9111

10K→15K

6.2 - 9.3 mi

Top 47%
×3story building
+67ft-78ft

Overall

12397

Males

9255

M50-54

9255

15K→20K

9.3 - 12.4 mi

Top 51%
×5story building
+106ft-86ft

Overall

13648

Males

9732

M50-54

9732

20K→Half

12.4 - 13.1 mi

Top 56%
×2story building
+19ft-37ft

Overall

14833

Males

10250

M50-54

10250

Half→25K

13.1 - 15.5 mi

Top 72%
×4story building
+66ft-88ft

Overall

19234

Males

11943

M50-54

11943

25K→30K

15.5 - 18.6 mi

Top 64%
×9story building
+181ft-148ft

Overall

17115

Males

10960

M50-54

10960

30K→20M

18.6 - 20.0 mi

Top 75%
×5story building
+64ft-50ft

Overall

20039

Males

12137

M50-54

12137

20M→21M

20.0 - 21.0 mi

Top 77%
×8story building
+106ft-24ft

Overall

20519

Males

12294

M50-54

12294

21M→35K

21.0 - 21.8 mi

Top 88%
×7story building
+17ft-86ft

Overall

23336

Males

13528

M50-54

13528

35K→23M

21.8 - 23.0 mi

Top 76%
×5story building
+23ft-63ft

Overall

20123

Males

12072

M50-54

12072

23M→24M

23.0 - 24.0 mi

Top 81%
×6story building
+12ft-82ft

Overall

21585

Males

12671

M50-54

12671

24M→40K

24.0 - 24.9 mi

Top 84%
×1story
+6ft-20ft

Overall

22481

Males

13064

M50-54

13064

40K→25.2M

24.9 - 25.2 mi

Top 83%
×1story
+13ft-16ft

Overall

22099

Males

12889

M50-54

12889

25.2M→Finish

25.2 - 26.2 mi

Top 76%
×2story building
+22ft-21ft

Overall

20286

Males

12090

M50-54

12090

Passing Analysis

Category:
Athletes Passed
684
Passed By
6327
Net Change
-5643
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11929
5K → 10K307297+10#11929#11919
10K → 15K148280-132#11919#12051
15K → 20K69444-375#12051#12426
20K → Half8127-119#12426#12545
Half → 25K91408-1399#12545#13944
25K → 30K45720-675#13944#14619
30K → 20M14548-534#14619#15153
20M → 21M15467-452#15153#15605
21M → 35K9553-544#15605#16149
35K → 23M17362-345#16149#16494
23M → 24M9382-373#16494#16867
24M → 40K11381-370#16867#17237
40K → 25.2M4172-168#17237#17405
25.2M → Finish19186-167#17405#17572
TOTALS6846327-5643
📊

Passing Visuals

Category:
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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