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BOSTON MARATHON 2023

Nathan Cottrell

Bib: 13891•M

AZ

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
7:35/mi
23:35
↑ 97↓ 3451.5%
10K· 6.21 mi
7:57/mi
48:17
↑ 79↓ 1380.4%
15K· 9.32 mi
7:34/mi
1:11:46
↑ 67↓ 78
20K· 12.43 mi
7:45/mi
1:35:50
↑ 106↓ 860.1%
Half· 13.11 mi
7:48/mi
1:41:09
↑ 19↓ 370.5%
25K· 15.53 mi
8:22/mi
2:01:26
↑ 66↓ 880.2%
30K· 18.64 mi
9:11/mi
2:29:59
↑ 181↓ 1480.2%
20M
10:12/mi
2:43:51
↑ 64↓ 500.2%
21M
11:57/mi
2:55:48
↑ 106↓ 241.6%
35K· 21.75 mi
10:04/mi
3:03:20
↑ 17↓ 861.7%
23M
10:44/mi
3:16:46
↑ 23↓ 630.6%
24M
8:55/mi
3:25:41
↓ 821.3%
40K· 24.85 mi
10:40/mi
3:34:48
↓ 200.3%
25.2M
11:42/mi
3:38:50
↑ 13↓ 160.2%
Finish· 26.22 mi
8:34/mi
3:47:34
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:09
Pace7:43 /mi
2nd Half
Distance13.11 mi
Time2:06:25
Pace9:39 /mi
📊Positive Split: 25.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:1923:357:3523:35
7:35
-
10K
6.21 mi11:17:0148:177:4624:42
7:57
+0:22
15K
9.32 mi11:40:301:11:467:4223:29
7:34
-0:23
20K
12.43 mi12:04:341:35:507:4324:04
7:45
+0:11
Half
13.11 mi12:09:531:41:097:435:19
7:48
+0:03
25K
15.53 mi12:30:102:01:267:4920:17
8:22
+0:34
30K
18.64 mi12:58:432:29:598:0328:33
9:11
+0:49
20M
20.00 mi13:12:352:43:518:1213:52
10:12
+1:01
21M
21.00 mi13:24:322:55:488:2211:57
11:57
+1:45
35K
21.75 mi13:32:043:03:208:267:32
10:04
-1:53
23M
23.00 mi13:45:303:16:468:3313:26
10:44
+0:40
24M
24.00 mi13:54:253:25:418:348:55
8:55
-1:49
40K
24.85 mi14:03:323:34:488:399:07
10:40
+1:45
25.2M
25.20 mi14:07:343:38:508:414:02
11:42
+1:02
Finish
26.22 mi14:16:183:47:348:418:44
8:34
-3:08

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

7:34 /mi

Average Pace

8:41 /mi

Slowest Pace

11:57 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:41:09

44% of race

Time at Steady Pace

1:06:29

29% of race

Time at Slower Pace

59:56

26% of race

Average Pace: 8:41 /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 mi10:52:1923:357:3523:35
7:35
#10447
10K
6.21 mi11:17:0148:177:4624:42
7:57
#12445
15K
9.32 mi11:40:301:11:467:4223:29
7:34
#11775
20K
12.43 mi12:04:341:35:507:4324:04
7:45
#11623
Half
13.11 mi12:09:531:41:097:435:19
7:48
#11668
25K
15.53 mi12:30:102:01:267:4920:17
8:22
#12327
30K
18.64 mi12:58:432:29:598:0328:33
9:11
#13640
20M
20.00 mi13:12:352:43:518:1213:52
10:12
#14493
21M
21.00 mi13:24:322:55:488:2211:57
11:57
#15334
35K
21.75 mi13:32:043:03:208:267:32
10:04
#15681
23M
23.00 mi13:45:303:16:468:3313:26
10:44
#16310
24M
24.00 mi13:54:253:25:418:348:55
8:55
#16316
40K
24.85 mi14:03:323:34:488:399:07
10:40
#16663
25.2M
25.20 mi14:07:343:38:508:414:02
11:42
#16803
Finish
26.22 mi14:16:183:47:348:418:44
8:34
#16765
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi104478381838110654(Top 40%)8482(Top 56%)8482(Top 413%)
10K6.21 mi3.10 mi12445-19989302-9219302-92114402(Top 54%)10082(Top 66%)10082(Top 491%)
15K9.32 mi3.11 mi11775+6708988+3148988+31410654(Top 40%)8482(Top 56%)8482(Top 413%)
20K12.43 mi3.11 mi11623+1528913+758913+7511270(Top 42%)8703(Top 57%)8703(Top 424%)
Half13.11 mi0.68 mi11668-458929-168929-1612646(Top 48%)9371(Top 62%)9371(Top 457%)
25K15.53 mi2.42 mi12327-6599181-2529181-25215354(Top 58%)10287(Top 68%)10287(Top 501%)
30K18.64 mi3.11 mi13640-13139703-5229703-52218104(Top 68%)11372(Top 75%)11372(Top 554%)
20M20.00 mi1.36 mi14493-85310004-30110004-30121000(Top 79%)12560(Top 83%)12560(Top 612%)
21M21.00 mi1.00 mi15334-84110300-29610300-29622666(Top 85%)13272(Top 87%)13272(Top 647%)
35K21.75 mi0.75 mi15681-34710416-11610416-11621452(Top 81%)12679(Top 84%)12679(Top 618%)
23M23.00 mi1.25 mi16310-62910671-25510671-25521818(Top 82%)12817(Top 84%)12817(Top 625%)
24M24.00 mi1.00 mi16316-610659+1210659+1216825(Top 63%)10547(Top 69%)10547(Top 514%)
40K24.85 mi0.85 mi16663-34710782-12310782-12321603(Top 81%)12633(Top 83%)12633(Top 616%)
25.2M25.20 mi0.35 mi16803-14010831-4910831-4921925(Top 82%)12802(Top 84%)12802(Top 624%)
Finish26.22 mi1.02 mi16765+3810802+2910802+2915810(Top 59%)10094(Top 67%)10094(Top 492%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 40%
×21story building
+97ft-345ft

Overall

10654

Males

8482

M50-54

8482

5K→10K

3.1 - 6.2 mi

Top 54%
×5story building
+79ft-138ft

Overall

14402

Males

10082

M50-54

10082

10K→15K

6.2 - 9.3 mi

Top 40%
×3story building
+67ft-78ft

Overall

10654

Males

8482

M50-54

8482

15K→20K

9.3 - 12.4 mi

Top 42%
×5story building
+106ft-86ft

Overall

11270

Males

8703

M50-54

8703

20K→Half

12.4 - 13.1 mi

Top 48%
×2story building
+19ft-37ft

Overall

12646

Males

9371

M50-54

9371

Half→25K

13.1 - 15.5 mi

Top 58%
×4story building
+66ft-88ft

Overall

15354

Males

10287

M50-54

10287

25K→30K

15.5 - 18.6 mi

Top 68%
×9story building
+181ft-148ft

Overall

18104

Males

11372

M50-54

11372

30K→20M

18.6 - 20.0 mi

Top 79%
×5story building
+64ft-50ft

Overall

21000

Males

12560

M50-54

12560

20M→21M

20.0 - 21.0 mi

Top 85%
×8story building
+106ft-24ft

Overall

22666

Males

13272

M50-54

13272

21M→35K

21.0 - 21.8 mi

Top 81%
×7story building
+17ft-86ft

Overall

21452

Males

12679

M50-54

12679

35K→23M

21.8 - 23.0 mi

Top 82%
×5story building
+23ft-63ft

Overall

21818

Males

12817

M50-54

12817

23M→24M

23.0 - 24.0 mi

Top 63%
×6story building
+12ft-82ft

Overall

16825

Males

10547

M50-54

10547

24M→40K

24.0 - 24.9 mi

Top 81%
×1story
+6ft-20ft

Overall

21603

Males

12633

M50-54

12633

40K→25.2M

24.9 - 25.2 mi

Top 82%
×1story
+13ft-16ft

Overall

21925

Males

12802

M50-54

12802

25.2M→Finish

25.2 - 26.2 mi

Top 59%
×2story building
+22ft-21ft

Overall

15810

Males

10094

M50-54

10094

Passing Analysis

Category:
Athletes Passed
1222
Passed By
7540
Net Change
-6318
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10447
5K → 10K192017-1998#10447#12445
10K → 15K69020+670#12445#11775
15K → 20K24290+152#11775#11623
20K → Half1863-45#11623#11668
Half → 25K27686-659#11668#12327
25K → 30K181331-1313#12327#13640
30K → 20M14867-853#13640#14493
20M → 21M4845-841#14493#15334
21M → 35K4351-347#15334#15681
35K → 23M5634-629#15681#16310
23M → 24M6975-6#16310#16316
24M → 40K17364-347#16316#16663
40K → 25.2M7147-140#16663#16803
25.2M → Finish8850+38#16803#16765
TOTALS12227540-6318
📊

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