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BOSTON MARATHON 2023

Stephen Cahill

Bib: 30056•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 (M40-44)
#0 / 2241
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
10:39/mi
33:05
↑ 97↓ 3451.5%
10K· 6.21 mi
10:34/mi
1:05:56
↑ 79↓ 1380.4%
15K· 9.32 mi
10:46/mi
1:39:24
↑ 67↓ 78
20K· 12.43 mi
10:59/mi
2:13:31
↑ 106↓ 860.1%
Half· 13.11 mi
10:41/mi
2:20:48
↑ 19↓ 370.5%
25K· 15.53 mi
10:59/mi
2:47:27
↑ 66↓ 880.2%
30K· 18.64 mi
11:40/mi
3:23:41
↑ 181↓ 1480.2%
20M
13:00/mi
3:41:21
↑ 64↓ 500.2%
21M
12:27/mi
3:53:48
↑ 106↓ 241.6%
35K· 21.75 mi
11:26/mi
4:02:21
↑ 17↓ 861.7%
23M
12:20/mi
4:17:48
↑ 23↓ 630.6%
24M
12:29/mi
4:30:17
↓ 821.3%
40K· 24.85 mi
12:40/mi
4:41:07
↓ 200.3%
25.2M
13:12/mi
4:45:40
↑ 13↓ 160.2%
Finish· 26.22 mi
10:08/mi
4:56:00
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:20:48
Pace10:44 /mi
2nd Half
Distance13.11 mi
Time2:35:12
Pace11:50 /mi
📊Positive Split: 10.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:0933:0510:3933:05
10:39
-
10K
6.21 mi12:25:001:05:5610:3732:51
10:34
-0:05
15K
9.32 mi12:58:281:39:2410:4033:28
10:46
+0:12
20K
12.43 mi13:32:352:13:3110:4534:07
10:59
+0:13
Half
13.11 mi13:39:522:20:4810:447:17
10:41
-0:18
25K
15.53 mi14:06:312:47:2710:4726:39
10:59
+0:18
30K
18.64 mi14:42:453:23:4110:5636:14
11:40
+0:41
20M
20.00 mi15:00:253:41:2111:0417:40
13:00
+1:20
21M
21.00 mi15:12:523:53:4811:0812:27
12:27
-0:33
35K
21.75 mi15:21:254:02:2111:098:33
11:26
-1:01
23M
23.00 mi15:36:524:17:4811:1315:27
12:20
+0:54
24M
24.00 mi15:49:214:30:1711:1612:29
12:29
+0:09
40K
24.85 mi16:00:114:41:0711:1910:50
12:40
+0:11
25.2M
25.20 mi16:04:444:45:4011:204:33
13:12
+0:32
Finish
26.22 mi16:15:044:56:0011:1810:20
10:08
-3:04

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

10:08 /mi

Average Pace

11:18 /mi

Slowest Pace

13:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:57:01

40% of race

Time at Steady Pace

1:45:33

36% of race

Time at Slower Pace

1:13:26

25% of race

Average Pace: 11:17 /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 mi11:52:0933:0510:3933:05
10:39
#25067
10K
6.21 mi12:25:001:05:5610:3732:51
10:34
#24929
15K
9.32 mi12:58:281:39:2410:4033:28
10:46
#24921
20K
12.43 mi13:32:352:13:3110:4534:07
10:59
#24843
Half
13.11 mi13:39:522:20:4810:447:17
10:41
#24820
25K
15.53 mi14:06:312:47:2710:4726:39
10:59
#24682
30K
18.64 mi14:42:453:23:4110:5636:14
11:40
#24554
20M
20.00 mi15:00:253:41:2111:0417:40
13:00
#24636
21M
21.00 mi15:12:523:53:4811:0812:27
12:27
#24580
35K
21.75 mi15:21:254:02:2111:098:33
11:26
#24559
23M
23.00 mi15:36:524:17:4811:1315:27
12:20
#24561
24M
24.00 mi15:49:214:30:1711:1612:29
12:29
#24599
40K
24.85 mi16:00:114:41:0711:1910:50
12:40
#24617
25.2M
25.20 mi16:04:444:45:4011:204:33
13:12
#24626
Finish
26.22 mi16:15:044:56:0011:1810:20
10:08
#24571
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi25067145751457524895(Top 94%)14469(Top 95%)14469(Top 646%)
10K6.21 mi3.10 mi24929+13814512+6314512+6324804(Top 93%)14454(Top 95%)14454(Top 645%)
15K9.32 mi3.11 mi24921+814507+514507+524895(Top 94%)14469(Top 95%)14469(Top 646%)
20K12.43 mi3.11 mi24843+7814459+4814459+4824608(Top 92%)14324(Top 94%)14324(Top 639%)
Half13.11 mi0.68 mi24820+2314445+1414445+1424498(Top 92%)14265(Top 94%)14265(Top 637%)
25K15.53 mi2.42 mi24682+13814368+7714368+7723962(Top 90%)14006(Top 92%)14006(Top 625%)
30K18.64 mi3.11 mi24554+12814297+7114297+7124070(Top 90%)13997(Top 92%)13997(Top 625%)
20M20.00 mi1.36 mi24636-8214323-2614323-2625170(Top 95%)14465(Top 95%)14465(Top 645%)
21M21.00 mi1.00 mi24580+5614300+2314300+2323390(Top 88%)13615(Top 90%)13615(Top 608%)
35K21.75 mi0.75 mi24559+2114285+1514285+1523998(Top 90%)13849(Top 91%)13849(Top 618%)
23M23.00 mi1.25 mi24561-214277+814277+824414(Top 92%)14047(Top 93%)14047(Top 627%)
24M24.00 mi1.00 mi24599-3814276+114276+125041(Top 94%)14314(Top 94%)14314(Top 639%)
40K24.85 mi0.85 mi24617-1814275+114275+124640(Top 93%)14128(Top 93%)14128(Top 630%)
25.2M25.20 mi0.35 mi24626-914279-414279-424184(Top 91%)13887(Top 92%)13887(Top 620%)
Finish26.22 mi1.02 mi24571+5514247+3214247+3222127(Top 83%)12926(Top 85%)12926(Top 577%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 94%
×21story building
+97ft-345ft

Overall

24895

Males

14469

M40-44

14469

5K→10K

3.1 - 6.2 mi

Top 93%
×5story building
+79ft-138ft

Overall

24804

Males

14454

M40-44

14454

10K→15K

6.2 - 9.3 mi

Top 94%
×3story building
+67ft-78ft

Overall

24895

Males

14469

M40-44

14469

15K→20K

9.3 - 12.4 mi

Top 92%
×5story building
+106ft-86ft

Overall

24608

Males

14324

M40-44

14324

20K→Half

12.4 - 13.1 mi

Top 92%
×2story building
+19ft-37ft

Overall

24498

Males

14265

M40-44

14265

Half→25K

13.1 - 15.5 mi

Top 90%
×4story building
+66ft-88ft

Overall

23962

Males

14006

M40-44

14006

25K→30K

15.5 - 18.6 mi

Top 90%
×9story building
+181ft-148ft

Overall

24070

Males

13997

M40-44

13997

30K→20M

18.6 - 20.0 mi

Top 95%
×5story building
+64ft-50ft

Overall

25170

Males

14465

M40-44

14465

20M→21M

20.0 - 21.0 mi

Top 88%
×8story building
+106ft-24ft

Overall

23390

Males

13615

M40-44

13615

21M→35K

21.0 - 21.8 mi

Top 90%
×7story building
+17ft-86ft

Overall

23998

Males

13849

M40-44

13849

35K→23M

21.8 - 23.0 mi

Top 92%
×5story building
+23ft-63ft

Overall

24414

Males

14047

M40-44

14047

23M→24M

23.0 - 24.0 mi

Top 94%
×6story building
+12ft-82ft

Overall

25041

Males

14314

M40-44

14314

24M→40K

24.0 - 24.9 mi

Top 93%
×1story
+6ft-20ft

Overall

24640

Males

14128

M40-44

14128

40K→25.2M

24.9 - 25.2 mi

Top 91%
×1story
+13ft-16ft

Overall

24184

Males

13887

M40-44

13887

25.2M→Finish

25.2 - 26.2 mi

Top 83%
×2story building
+22ft-21ft

Overall

22127

Males

12926

M40-44

12926

Passing Analysis

Category:
Athletes Passed
1134
Passed By
638
Net Change
+496
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25067
5K → 10K258120+138#25067#24929
10K → 15K116108+8#24929#24921
15K → 20K13961+78#24921#24843
20K → Half296+23#24843#24820
Half → 25K16022+138#24820#24682
25K → 30K16133+128#24682#24554
30K → 20M22104-82#24554#24636
20M → 21M659+56#24636#24580
21M → 35K3110+21#24580#24559
35K → 23M4547-2#24559#24561
23M → 24M1957-38#24561#24599
24M → 40K2240-18#24599#24617
40K → 25.2M615-9#24617#24626
25.2M → Finish616+55#24626#24571
TOTALS1134638+496
📊

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