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BOSTON MARATHON 2023

Matthew Cox

Bib: 30354•M

OR

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
11:04/mi
34:22
↑ 97↓ 3451.5%
10K· 6.21 mi
10:11/mi
1:06:00
↑ 79↓ 1380.4%
15K· 9.32 mi
10:40/mi
1:39:07
↑ 67↓ 78
20K· 12.43 mi
10:25/mi
2:11:29
↑ 106↓ 860.1%
Half· 13.11 mi
10:08/mi
2:18:24
↑ 19↓ 370.5%
25K· 15.53 mi
11:11/mi
2:45:31
↑ 66↓ 880.2%
30K· 18.64 mi
17:03/mi
3:38:29
↑ 181↓ 1480.2%
20M
9:11/mi
3:50:58
↑ 64↓ 500.2%
21M
10:05/mi
4:01:03
↑ 106↓ 241.6%
35K· 21.75 mi
10:36/mi
4:08:59
↑ 17↓ 861.7%
23M
10:49/mi
4:22:31
↑ 23↓ 630.6%
24M
9:35/mi
4:32:06
↓ 821.3%
40K· 24.85 mi
10:09/mi
4:40:47
↓ 200.3%
25.2M
13:09/mi
4:45:19
↑ 13↓ 160.2%
Finish· 26.22 mi
9:42/mi
4:55:12
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:18:24
Pace10:33 /mi
2nd Half
Distance13.11 mi
Time2:36:48
Pace11:58 /mi
📊Positive Split: 13.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:53:3034:2211:0434:22
11:04
-
10K
6.21 mi12:25:081:06:0010:3731:38
10:11
-0:53
15K
9.32 mi12:58:151:39:0710:3833:07
10:40
+0:29
20K
12.43 mi13:30:372:11:2910:3532:22
10:25
-0:15
Half
13.11 mi13:37:322:18:2410:336:55
10:08
-0:17
25K
15.53 mi14:04:392:45:3110:3927:07
11:11
+1:03
30K
18.64 mi14:57:373:38:2911:4352:58
17:03
+5:52
20M
20.00 mi15:10:063:50:5811:3312:29
9:11
-7:52
21M
21.00 mi15:20:114:01:0311:2910:05
10:05
+0:54
35K
21.75 mi15:28:074:08:5911:277:56
10:36
+0:31
23M
23.00 mi15:41:394:22:3111:2513:32
10:49
+0:13
24M
24.00 mi15:51:144:32:0611:209:35
9:35
-1:14
40K
24.85 mi15:59:554:40:4711:188:41
10:09
+0:34
25.2M
25.20 mi16:04:274:45:1911:194:32
13:09
+3:00
Finish
26.22 mi16:14:204:55:1211:169:53
9:42
-3:27

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

9:11 /mi

Average Pace

11:16 /mi

Slowest Pace

17:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

12:29

4% of race

Time at Steady Pace

3:45:13

76% of race

Time at Slower Pace

57:30

19% of race

Average Pace: 11:16 /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 mi11:53:3034:2211:0434:22
11:04
#25774
10K
6.21 mi12:25:081:06:0010:3731:38
10:11
#24956
15K
9.32 mi12:58:151:39:0710:3833:07
10:40
#24864
20K
12.43 mi13:30:372:11:2910:3532:22
10:25
#24548
Half
13.11 mi13:37:322:18:2410:336:55
10:08
#24502
25K
15.53 mi14:04:392:45:3110:3927:07
11:11
#24457
30K
18.64 mi14:57:373:38:2911:4352:58
17:03
#25558
20M
20.00 mi15:10:063:50:5811:3312:29
9:11
#25276
21M
21.00 mi15:20:114:01:0311:2910:05
10:05
#25077
35K
21.75 mi15:28:074:08:5911:277:56
10:36
#25009
23M
23.00 mi15:41:394:22:3111:2513:32
10:49
#24875
24M
24.00 mi15:51:144:32:0611:209:35
9:35
#24723
40K
24.85 mi15:59:554:40:4711:188:41
10:09
#24601
25.2M
25.20 mi16:04:274:45:1911:194:32
13:09
#24601
Finish
26.22 mi16:14:204:55:1211:169:53
9:42
#24514
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi25774148471484724739(Top 93%)14403(Top 95%)14403(Top 643%)
10K6.21 mi3.10 mi24956+81814525+32214525+32224083(Top 90%)14129(Top 93%)14129(Top 630%)
15K9.32 mi3.11 mi24864+9214476+4914476+4924739(Top 93%)14403(Top 95%)14403(Top 643%)
20K12.43 mi3.11 mi24548+31614321+15514321+15523687(Top 89%)13929(Top 92%)13929(Top 622%)
Half13.11 mi0.68 mi24502+4614295+2614295+2623546(Top 88%)13875(Top 91%)13875(Top 619%)
25K15.53 mi2.42 mi24457+4514274+2114274+2124246(Top 91%)14142(Top 93%)14142(Top 631%)
30K18.64 mi3.11 mi25558-110114731-45714731-45726600(Top 100%)15164(Top 100%)15164(Top 677%)
20M20.00 mi1.36 mi25276+28214607+12414607+12417481(Top 66%)11026(Top 73%)11026(Top 492%)
21M21.00 mi1.00 mi25077+19914509+9814509+9818316(Top 69%)11361(Top 75%)11361(Top 507%)
35K21.75 mi0.75 mi25009+6814467+4214467+4222583(Top 85%)13203(Top 87%)13203(Top 589%)
23M23.00 mi1.25 mi24875+13414405+6214405+6221983(Top 83%)12902(Top 85%)12902(Top 576%)
24M24.00 mi1.00 mi24723+15214329+7614329+7619501(Top 73%)11768(Top 78%)11768(Top 525%)
40K24.85 mi0.85 mi24601+12214269+6014269+6020383(Top 77%)12096(Top 80%)12096(Top 540%)
25.2M25.20 mi0.35 mi2460114263+614263+624132(Top 91%)13860(Top 91%)13860(Top 618%)
Finish26.22 mi1.02 mi24514+8714220+4314220+4320789(Top 78%)12318(Top 81%)12318(Top 550%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 93%
×21story building
+97ft-345ft

Overall

24739

Males

14403

M40-44

14403

5K→10K

3.1 - 6.2 mi

Top 90%
×5story building
+79ft-138ft

Overall

24083

Males

14129

M40-44

14129

10K→15K

6.2 - 9.3 mi

Top 93%
×3story building
+67ft-78ft

Overall

24739

Males

14403

M40-44

14403

15K→20K

9.3 - 12.4 mi

Top 89%
×5story building
+106ft-86ft

Overall

23687

Males

13929

M40-44

13929

20K→Half

12.4 - 13.1 mi

Top 88%
×2story building
+19ft-37ft

Overall

23546

Males

13875

M40-44

13875

Half→25K

13.1 - 15.5 mi

Top 91%
×4story building
+66ft-88ft

Overall

24246

Males

14142

M40-44

14142

25K→30K

15.5 - 18.6 mi

Top 100%
×9story building
+181ft-148ft

Overall

26600

Males

15164

M40-44

15164

30K→20M

18.6 - 20.0 mi

Top 66%
×5story building
+64ft-50ft

Overall

17481

Males

11026

M40-44

11026

20M→21M

20.0 - 21.0 mi

Top 69%
×8story building
+106ft-24ft

Overall

18316

Males

11361

M40-44

11361

21M→35K

21.0 - 21.8 mi

Top 85%
×7story building
+17ft-86ft

Overall

22583

Males

13203

M40-44

13203

35K→23M

21.8 - 23.0 mi

Top 83%
×5story building
+23ft-63ft

Overall

21983

Males

12902

M40-44

12902

23M→24M

23.0 - 24.0 mi

Top 73%
×6story building
+12ft-82ft

Overall

19501

Males

11768

M40-44

11768

24M→40K

24.0 - 24.9 mi

Top 77%
×1story
+6ft-20ft

Overall

20383

Males

12096

M40-44

12096

40K→25.2M

24.9 - 25.2 mi

Top 91%
×1story
+13ft-16ft

Overall

24132

Males

13860

M40-44

13860

25.2M→Finish

25.2 - 26.2 mi

Top 78%
×2story building
+22ft-21ft

Overall

20789

Males

12318

M40-44

12318

Passing Analysis

Category:
Athletes Passed
2521
Passed By
1261
Net Change
+1260
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25774
5K → 10K8202+818#25774#24956
10K → 15K15866+92#24956#24864
15K → 20K3237+316#24864#24548
20K → Half526+46#24548#24502
Half → 25K10964+45#24502#24457
25K → 30K01101-1101#24457#25558
30K → 20M2820+282#25558#25276
20M → 21M1990+199#25276#25077
21M → 35K702+68#25077#25009
35K → 23M1340+134#25009#24875
23M → 24M1520+152#24875#24723
24M → 40K1220+122#24723#24601
40K → 25.2M13130#24601#24601
25.2M → Finish870+87#24601#24514
TOTALS25211261+1260
📊

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