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BOSTON MARATHON 2023

David Canter

Bib: 30377•M

MA

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
10:43/mi
33:18
↑ 97↓ 3451.5%
10K· 6.21 mi
10:46/mi
1:06:45
↑ 79↓ 1380.4%
15K· 9.32 mi
11:02/mi
1:41:01
↑ 67↓ 78
20K· 12.43 mi
10:59/mi
2:15:08
↑ 106↓ 860.1%
Half· 13.11 mi
10:48/mi
2:22:30
↑ 19↓ 370.5%
25K· 15.53 mi
11:19/mi
2:49:57
↑ 66↓ 880.2%
30K· 18.64 mi
11:47/mi
3:26:35
↑ 181↓ 1480.2%
20M
11:06/mi
3:41:40
↑ 64↓ 500.2%
21M
10:14/mi
3:51:54
↑ 106↓ 241.6%
35K· 21.75 mi
10:16/mi
3:59:35
↑ 17↓ 861.7%
23M
10:16/mi
4:12:26
↑ 23↓ 630.6%
24M
9:51/mi
4:22:17
↓ 821.3%
40K· 24.85 mi
10:12/mi
4:31:00
↓ 200.3%
25.2M
11:42/mi
4:35:02
↑ 13↓ 160.2%
Finish· 26.22 mi
8:55/mi
4:44:07
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time2:22:30
Pace10:52 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time2:21:37
Pace10:48 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:4833:1810:4333:18
10:43
-
10K
6.21 mi12:26:151:06:4510:4533:27
10:46
+0:03
15K
9.32 mi13:00:311:41:0110:5034:16
11:02
+0:16
20K
12.43 mi13:34:382:15:0810:5234:07
10:59
-0:03
Half
13.11 mi13:42:002:22:3010:527:22
10:48
-0:11
25K
15.53 mi14:09:272:49:5710:5627:27
11:19
+0:31
30K
18.64 mi14:46:053:26:3511:0536:38
11:47
+0:28
20M
20.00 mi15:01:103:41:4011:0515:05
11:06
-0:41
21M
21.00 mi15:11:243:51:5411:0310:14
10:14
-0:52
35K
21.75 mi15:19:053:59:3511:017:41
10:16
+0:02
23M
23.00 mi15:31:564:12:2610:5912:51
10:16
0:00
24M
24.00 mi15:41:474:22:1710:569:51
9:51
-0:25
40K
24.85 mi15:50:304:31:0010:548:43
10:12
+0:21
25.2M
25.20 mi15:54:324:35:0210:554:02
11:42
+1:30
Finish
26.22 mi16:03:374:44:0710:519:05
8:55
-2:47

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

8:55 /mi

Average Pace

10:51 /mi

Slowest Pace

11:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

58:25

21% of race

Time at Steady Pace

2:37:35

55% of race

Time at Slower Pace

1:08:07

24% of race

Average Pace: 10:50 /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 mi11:52:4833:1810:4333:18
10:43
#25220
10K
6.21 mi12:26:151:06:4510:4533:27
10:46
#25157
15K
9.32 mi13:00:311:41:0110:5034:16
11:02
#25196
20K
12.43 mi13:34:382:15:0810:5234:07
10:59
#25029
Half
13.11 mi13:42:002:22:3010:527:22
10:48
#25003
25K
15.53 mi14:09:272:49:5710:5627:27
11:19
#24915
30K
18.64 mi14:46:053:26:3511:0536:38
11:47
#24805
20M
20.00 mi15:01:103:41:4011:0515:05
11:06
#24663
21M
21.00 mi15:11:243:51:5411:0310:14
10:14
#24436
35K
21.75 mi15:19:053:59:3511:017:41
10:16
#24342
23M
23.00 mi15:31:564:12:2610:5912:51
10:16
#24191
24M
24.00 mi15:41:474:22:1710:569:51
9:51
#24064
40K
24.85 mi15:50:304:31:0010:548:43
10:12
#23967
25.2M
25.20 mi15:54:324:35:0210:554:02
11:42
#23946
Finish
26.22 mi16:03:374:44:0710:519:05
8:55
#23819
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi25220146411464125208(Top 95%)14607(Top 96%)14607(Top 712%)
10K6.21 mi3.10 mi25157+6314610+3114610+3125109(Top 94%)14581(Top 96%)14581(Top 711%)
15K9.32 mi3.11 mi25196-3914624-1414624-1425208(Top 95%)14607(Top 96%)14607(Top 712%)
20K12.43 mi3.11 mi25029+16714537+8714537+8724606(Top 92%)14322(Top 94%)14322(Top 698%)
Half13.11 mi0.68 mi25003+2614526+1114526+1124656(Top 93%)14336(Top 94%)14336(Top 699%)
25K15.53 mi2.42 mi24915+8814472+5414472+5424436(Top 92%)14218(Top 94%)14218(Top 693%)
30K18.64 mi3.11 mi24805+11014406+6614406+6624244(Top 91%)14075(Top 93%)14075(Top 686%)
20M20.00 mi1.36 mi24663+14214338+6814338+6822873(Top 86%)13407(Top 88%)13407(Top 653%)
21M21.00 mi1.00 mi24436+22714230+10814230+10818817(Top 71%)11564(Top 76%)11564(Top 564%)
35K21.75 mi0.75 mi24342+9414177+5314177+5321908(Top 82%)12880(Top 85%)12880(Top 628%)
23M23.00 mi1.25 mi24191+15114101+7614101+7620772(Top 78%)12357(Top 81%)12357(Top 602%)
24M24.00 mi1.00 mi24064+12714037+6414037+6420382(Top 77%)12171(Top 80%)12171(Top 593%)
40K24.85 mi0.85 mi23967+9713989+4813989+4820474(Top 77%)12137(Top 80%)12137(Top 591%)
25.2M25.20 mi0.35 mi23946+2113980+913980+921954(Top 82%)12831(Top 85%)12831(Top 625%)
Finish26.22 mi1.02 mi23819+12713920+6013920+6017549(Top 66%)10849(Top 71%)10849(Top 529%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 95%
×21story building
+97ft-345ft

Overall

25208

Males

14607

M50-54

14607

5K→10K

3.1 - 6.2 mi

Top 94%
×5story building
+79ft-138ft

Overall

25109

Males

14581

M50-54

14581

10K→15K

6.2 - 9.3 mi

Top 95%
×3story building
+67ft-78ft

Overall

25208

Males

14607

M50-54

14607

15K→20K

9.3 - 12.4 mi

Top 92%
×5story building
+106ft-86ft

Overall

24606

Males

14322

M50-54

14322

20K→Half

12.4 - 13.1 mi

Top 93%
×2story building
+19ft-37ft

Overall

24656

Males

14336

M50-54

14336

Half→25K

13.1 - 15.5 mi

Top 92%
×4story building
+66ft-88ft

Overall

24436

Males

14218

M50-54

14218

25K→30K

15.5 - 18.6 mi

Top 91%
×9story building
+181ft-148ft

Overall

24244

Males

14075

M50-54

14075

30K→20M

18.6 - 20.0 mi

Top 86%
×5story building
+64ft-50ft

Overall

22873

Males

13407

M50-54

13407

20M→21M

20.0 - 21.0 mi

Top 71%
×8story building
+106ft-24ft

Overall

18817

Males

11564

M50-54

11564

21M→35K

21.0 - 21.8 mi

Top 82%
×7story building
+17ft-86ft

Overall

21908

Males

12880

M50-54

12880

35K→23M

21.8 - 23.0 mi

Top 78%
×5story building
+23ft-63ft

Overall

20772

Males

12357

M50-54

12357

23M→24M

23.0 - 24.0 mi

Top 77%
×6story building
+12ft-82ft

Overall

20382

Males

12171

M50-54

12171

24M→40K

24.0 - 24.9 mi

Top 77%
×1story
+6ft-20ft

Overall

20474

Males

12137

M50-54

12137

40K→25.2M

24.9 - 25.2 mi

Top 82%
×1story
+13ft-16ft

Overall

21954

Males

12831

M50-54

12831

25.2M→Finish

25.2 - 26.2 mi

Top 66%
×2story building
+22ft-21ft

Overall

17549

Males

10849

M50-54

10849

Passing Analysis

Category:
Athletes Passed
1784
Passed By
383
Net Change
+1401
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25220
5K → 10K195132+63#25220#25157
10K → 15K91130-39#25157#25196
15K → 20K19831+167#25196#25029
20K → Half348+26#25029#25003
Half → 25K11527+88#25003#24915
25K → 30K15242+110#24915#24805
30K → 20M1464+142#24805#24663
20M → 21M2270+227#24663#24436
21M → 35K951+94#24436#24342
35K → 23M1510+151#24342#24191
23M → 24M1270+127#24191#24064
24M → 40K970+97#24064#23967
40K → 25.2M287+21#23967#23946
25.2M → Finish1281+127#23946#23819
TOTALS1784383+1401
📊

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