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BOSTON MARATHON 2023

Colby Nixon

Bib: 4043•M

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 9%
Gender (Male)
#0 / 15176
Top 16%
Division (M18-39)
#0 / 5285
Top 35%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:21
Rank: #5306
Start → 5K
21:21 | 6:52/mi
10K· 6.21 mi
41:56
Rank: #4452 (+854)
5K → 10K
20:35 | 6:38/mi
15K· 9.32 mi
1:02:51
Rank: #4434 (+18)
10K → 15K
20:55 | 6:44/mi
20K· 12.43 mi
1:23:38
Rank: #4160 (+274)
15K → 20K
20:47 | 6:41/mi
Half· 13.11 mi
1:27:59
Rank: #3992 (+168)
20K → Half
4:21 | 6:23/mi
25K· 15.53 mi
1:43:55
Rank: #3675 (+317)
Half → 25K
15:56 | 6:34/mi
30K· 18.64 mi
2:04:51
Rank: #3416 (+259)
25K → 30K
20:56 | 6:44/mi
20M
2:14:02
Rank: #3297 (+119)
30K → 20M
9:11 | 6:45/mi
21M
2:20:56
Rank: #3165 (+132)
20M → 21M
6:54 | 6:54/mi
35K· 21.75 mi
2:25:43
Rank: #3090 (+75)
21M → 35K
4:47 | 6:24/mi
23M
2:33:55
Rank: #2934 (+156)
35K → 23M
8:12 | 6:33/mi
24M
2:40:10
Rank: #2799 (+135)
23M → 24M
6:15 | 6:15/mi
40K· 24.85 mi
2:45:41
Rank: #2689 (+110)
24M → 40K
5:31 | 6:27/mi
25.2M
2:48:04
Rank: #2653 (+36)
40K → 25.2M
2:23 | 6:55/mi
Finish· 26.22 mi
2:54:10
Rank: #2509 (+144)
25.2M → Finish
6:06 | 5:59/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:27:59
Pace6:43 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:26:11
Pace6:34 /mi
📊Negative Split: 2.0% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:0121:216:5221:21
6:52
-
10K
6.21 mi10:43:3641:566:4520:35
6:38
-0:14
15K
9.32 mi11:04:311:02:516:4520:55
6:44
+0:06
20K
12.43 mi11:25:181:23:386:4420:47
6:41
-0:03
Half
13.11 mi11:29:391:27:596:434:21
6:23
-0:18
25K
15.53 mi11:45:351:43:556:4115:56
6:34
+0:11
30K
18.64 mi12:06:312:04:516:4220:56
6:44
+0:10
20M
20.00 mi12:15:422:14:026:429:11
6:45
+0:01
21M
21.00 mi12:22:362:20:566:436:54
6:54
+0:09
35K
21.75 mi12:27:232:25:436:424:47
6:24
-0:30
23M
23.00 mi12:35:352:33:556:428:12
6:33
+0:09
24M
24.00 mi12:41:502:40:106:406:15
6:15
-0:18
40K
24.85 mi12:47:212:45:416:405:31
6:27
+0:12
25.2M
25.20 mi12:49:442:48:046:402:23
6:55
+0:28
Finish
26.22 mi12:55:502:54:106:396:06
5:59
-0:56

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

5:59 /mi

Average Pace

6:39 /mi

Slowest Pace

6:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

51:08

29% of race

Time at Steady Pace

2:03:02

71% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:39 /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 mi10:23:0121:216:5221:21
6:52
#5306
10K
6.21 mi10:43:3641:566:4520:35
6:38
#4452
15K
9.32 mi11:04:311:02:516:4520:55
6:44
#4434
20K
12.43 mi11:25:181:23:386:4420:47
6:41
#4160
Half
13.11 mi11:29:391:27:596:434:21
6:23
#3992
25K
15.53 mi11:45:351:43:556:4115:56
6:34
#3675
30K
18.64 mi12:06:312:04:516:4220:56
6:44
#3416
20M
20.00 mi12:15:422:14:026:429:11
6:45
#3297
21M
21.00 mi12:22:362:20:566:436:54
6:54
#3165
35K
21.75 mi12:27:232:25:436:424:47
6:24
#3090
23M
23.00 mi12:35:352:33:556:428:12
6:33
#2934
24M
24.00 mi12:41:502:40:106:406:15
6:15
#2799
40K
24.85 mi12:47:212:45:416:405:31
6:27
#2689
25.2M
25.20 mi12:49:442:48:046:402:23
6:55
#2653
Finish
26.22 mi12:55:502:54:106:396:06
5:59
#2509
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5306490449044429(Top 17%)4138(Top 27%)4138(Top 78%)
10K6.21 mi3.10 mi4452+8544163+7414163+7413661(Top 14%)3457(Top 23%)3457(Top 65%)
15K9.32 mi3.11 mi4434+184147+164147+164429(Top 17%)4138(Top 27%)4138(Top 78%)
20K12.43 mi3.11 mi4160+2743903+2443903+2443468(Top 13%)3282(Top 22%)3282(Top 62%)
Half13.11 mi0.68 mi3992+1683752+1513752+1512134(Top 8%)2050(Top 14%)2050(Top 39%)
25K15.53 mi2.42 mi3675+3173472+2803472+2802551(Top 10%)2441(Top 16%)2441(Top 46%)
30K18.64 mi3.11 mi3416+2593234+2383234+2382600(Top 10%)2471(Top 16%)2471(Top 47%)
20M20.00 mi1.36 mi3297+1193123+1113123+1112555(Top 10%)2422(Top 16%)2422(Top 46%)
21M21.00 mi1.00 mi3165+1323002+1213002+1211772(Top 7%)1685(Top 11%)1685(Top 32%)
35K21.75 mi0.75 mi3090+752934+682934+681966(Top 7%)1870(Top 12%)1870(Top 35%)
23M23.00 mi1.25 mi2934+1562790+1442790+1441621(Top 6%)1541(Top 10%)1541(Top 29%)
24M24.00 mi1.00 mi2799+1352663+1272663+1271217(Top 5%)1154(Top 8%)1154(Top 22%)
40K24.85 mi0.85 mi2689+1102565+982565+981405(Top 5%)1328(Top 9%)1328(Top 25%)
25.2M25.20 mi0.35 mi2653+362529+362529+361492(Top 6%)1409(Top 9%)1409(Top 27%)
Finish26.22 mi1.02 mi2509+1442393+1362393+136708(Top 3%)677(Top 4%)677(Top 13%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 17%
×21stories
+97ft-345ft

Overall

4429

Males

4138

M18-39

4138

5K→10K

3.1 - 6.2 mi

Top 14%
×5stories
+79ft-138ft

Overall

3661

Males

3457

M18-39

3457

10K→15K

6.2 - 9.3 mi

Top 17%
×3stories
+67ft-78ft

Overall

4429

Males

4138

M18-39

4138

15K→20K

9.3 - 12.4 mi

Top 13%
×5stories
+106ft-86ft

Overall

3468

Males

3282

M18-39

3282

20K→Half

12.4 - 13.1 mi

Top 8%
×2stories
+19ft-37ft

Overall

2134

Males

2050

M18-39

2050

Half→25K

13.1 - 15.5 mi

Top 10%
×4stories
+66ft-88ft

Overall

2551

Males

2441

M18-39

2441

25K→30K

15.5 - 18.6 mi

Top 10%
×9stories
+181ft-148ft

Overall

2600

Males

2471

M18-39

2471

30K→20M

18.6 - 20.0 mi

Top 10%
×5stories
+64ft-50ft

Overall

2555

Males

2422

M18-39

2422

20M→21M

20.0 - 21.0 mi

Top 7%
×8stories
+106ft-24ft

Overall

1772

Males

1685

M18-39

1685

21M→35K

21.0 - 21.8 mi

Top 7%
×7stories
+17ft-86ft

Overall

1966

Males

1870

M18-39

1870

35K→23M

21.8 - 23.0 mi

Top 6%
×5stories
+23ft-63ft

Overall

1621

Males

1541

M18-39

1541

23M→24M

23.0 - 24.0 mi

Top 5%
×6stories
+12ft-82ft

Overall

1217

Males

1154

M18-39

1154

24M→40K

24.0 - 24.9 mi

Top 5%
×1story
+6ft-20ft

Overall

1405

Males

1328

M18-39

1328

40K→25.2M

24.9 - 25.2 mi

Top 6%
×1story
+13ft-16ft

Overall

1492

Males

1409

M18-39

1409

25.2M→Finish

25.2 - 26.2 mi

Top 3%
×2stories
+22ft-21ft

Overall

708

Males

677

M18-39

677

Passing Analysis

Category:
Athletes Passed
2967
Passed By
170
Net Change
+2797
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5306
5K → 10K86713+854#5306#4452
10K → 15K129111+18#4452#4434
15K → 20K2795+274#4434#4160
20K → Half1680+168#4160#3992
Half → 25K3192+317#3992#3675
25K → 30K27011+259#3675#3416
30K → 20M12910+119#3416#3297
20M → 21M1320+132#3297#3165
21M → 35K794+75#3165#3090
35K → 23M1626+156#3090#2934
23M → 24M1416+135#2934#2799
24M → 40K1100+110#2799#2689
40K → 25.2M382+36#2689#2653
25.2M → Finish1440+144#2653#2509
TOTALS2967170+2797
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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