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BOSTON MARATHON 2023

Nicholas Bailey

Bib: 4025•M

MI

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 24%
Gender (Male)
#0 / 15176
Top 37%
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:47
Rank: #6310
Start → 5K
21:47 | 7:01/mi
10K· 6.21 mi
43:52
Rank: #6852 (-542)
5K → 10K
22:05 | 7:06/mi
15K· 9.32 mi
1:05:16
Rank: #6526 (+326)
10K → 15K
21:24 | 6:53/mi
20K· 12.43 mi
1:26:42
Rank: #6205 (+321)
15K → 20K
21:26 | 6:54/mi
Half· 13.11 mi
1:31:21
Rank: #6163 (+42)
20K → Half
4:39 | 6:49/mi
25K· 15.53 mi
1:48:00
Rank: #5921 (+242)
Half → 25K
16:39 | 6:52/mi
30K· 18.64 mi
2:10:12
Rank: #5716 (+205)
25K → 30K
22:12 | 7:09/mi
20M
2:19:51
Rank: #5604 (+112)
30K → 20M
9:39 | 7:06/mi
21M
2:27:38
Rank: #5599 (+5)
20M → 21M
7:47 | 7:47/mi
35K· 21.75 mi
2:32:55
Rank: #5578 (+21)
21M → 35K
5:17 | 7:04/mi
23M
2:42:22
Rank: #5585 (-7)
35K → 23M
9:27 | 7:33/mi
24M
2:49:47
Rank: #5590 (-5)
23M → 24M
7:25 | 7:25/mi
40K· 24.85 mi
2:56:33
Rank: #5655 (-65)
24M → 40K
6:46 | 7:55/mi
25.2M
3:00:30
Rank: #5934 (-279)
40K → 25.2M
3:57 | 11:27/mi
Finish· 26.22 mi
3:09:45
Rank: #6364 (-430)
25.2M → Finish
9:15 | 9:05/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:31:21
Pace6:58 /mi
2nd Half
Distance13.11 mi
Time1:38:24
Pace7:30 /mi
📊Positive Split: 7.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:4221:477:0121:47
7:01
-
10K
6.21 mi10:45:4743:527:0422:05
7:06
+0:05
15K
9.32 mi11:07:111:05:167:0021:24
6:53
-0:13
20K
12.43 mi11:28:371:26:426:5921:26
6:54
+0:01
Half
13.11 mi11:33:161:31:216:584:39
6:49
-0:05
25K
15.53 mi11:49:551:48:006:5716:39
6:52
+0:03
30K
18.64 mi12:12:072:10:126:5922:12
7:09
+0:17
20M
20.00 mi12:21:462:19:517:009:39
7:06
-0:03
21M
21.00 mi12:29:332:27:387:027:47
7:47
+0:41
35K
21.75 mi12:34:502:32:557:025:17
7:04
-0:43
23M
23.00 mi12:44:172:42:227:049:27
7:33
+0:29
24M
24.00 mi12:51:422:49:477:047:25
7:25
-0:08
40K
24.85 mi12:58:282:56:337:066:46
7:55
+0:30
25.2M
25.20 mi13:02:253:00:307:103:57
11:27
+3:32
Finish
26.22 mi13:11:403:09:457:159:15
9:05
-2:22

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

6:49 /mi

Average Pace

7:15 /mi

Slowest Pace

11:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:42:00

85% of race

Time at Slower Pace

27:45

15% of race

Average Pace: 7:14 /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 mi10:23:4221:477:0121:47
7:01
#6310
10K
6.21 mi10:45:4743:527:0422:05
7:06
#6852
15K
9.32 mi11:07:111:05:167:0021:24
6:53
#6526
20K
12.43 mi11:28:371:26:426:5921:26
6:54
#6205
Half
13.11 mi11:33:161:31:216:584:39
6:49
#6163
25K
15.53 mi11:49:551:48:006:5716:39
6:52
#5921
30K
18.64 mi12:12:072:10:126:5922:12
7:09
#5716
20M
20.00 mi12:21:462:19:517:009:39
7:06
#5604
21M
21.00 mi12:29:332:27:387:027:47
7:47
#5599
35K
21.75 mi12:34:502:32:557:025:17
7:04
#5578
23M
23.00 mi12:44:172:42:227:049:27
7:33
#5585
24M
24.00 mi12:51:422:49:477:047:25
7:25
#5590
40K
24.85 mi12:58:282:56:337:066:46
7:55
#5655
25.2M
25.20 mi13:02:253:00:307:103:57
11:27
#5934
Finish
26.22 mi13:11:403:09:457:159:15
9:05
#6364
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi6310574657465880(Top 22%)5368(Top 35%)5368(Top 102%)
10K6.21 mi3.10 mi6852-5426154-4086154-4087483(Top 28%)6585(Top 43%)6585(Top 125%)
15K9.32 mi3.11 mi6526+3265890+2645890+2645880(Top 22%)5368(Top 35%)5368(Top 102%)
20K12.43 mi3.11 mi6205+3215634+2565634+2565348(Top 20%)4938(Top 33%)4938(Top 93%)
Half13.11 mi0.68 mi6163+425607+275607+275434(Top 20%)5017(Top 33%)5017(Top 95%)
25K15.53 mi2.42 mi5921+2425419+1885419+1884733(Top 18%)4396(Top 29%)4396(Top 83%)
30K18.64 mi3.11 mi5716+2055245+1745245+1745191(Top 19%)4756(Top 31%)4756(Top 90%)
20M20.00 mi1.36 mi5604+1125144+1015144+1014642(Top 17%)4261(Top 28%)4261(Top 81%)
21M21.00 mi1.00 mi5599+55136+85136+86079(Top 23%)5248(Top 35%)5248(Top 99%)
35K21.75 mi0.75 mi5578+215117+195117+195689(Top 21%)5020(Top 33%)5020(Top 95%)
23M23.00 mi1.25 mi5585-75107+105107+106701(Top 25%)5632(Top 37%)5632(Top 107%)
24M24.00 mi1.00 mi5590-55094+135094+137136(Top 27%)5786(Top 38%)5786(Top 109%)
40K24.85 mi0.85 mi5655-655136-425136-429395(Top 35%)7022(Top 46%)7022(Top 133%)
25.2M25.20 mi0.35 mi5934-2795342-2065342-20621413(Top 80%)12562(Top 83%)12562(Top 238%)
Finish26.22 mi1.02 mi6364-4305661-3195661-31918324(Top 69%)11217(Top 74%)11217(Top 212%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 22%
×21stories
+97ft-345ft

Overall

5880

Males

5368

M18-39

5368

5K→10K

3.1 - 6.2 mi

Top 28%
×5stories
+79ft-138ft

Overall

7483

Males

6585

M18-39

6585

10K→15K

6.2 - 9.3 mi

Top 22%
×3stories
+67ft-78ft

Overall

5880

Males

5368

M18-39

5368

15K→20K

9.3 - 12.4 mi

Top 20%
×5stories
+106ft-86ft

Overall

5348

Males

4938

M18-39

4938

20K→Half

12.4 - 13.1 mi

Top 20%
×2stories
+19ft-37ft

Overall

5434

Males

5017

M18-39

5017

Half→25K

13.1 - 15.5 mi

Top 18%
×4stories
+66ft-88ft

Overall

4733

Males

4396

M18-39

4396

25K→30K

15.5 - 18.6 mi

Top 19%
×9stories
+181ft-148ft

Overall

5191

Males

4756

M18-39

4756

30K→20M

18.6 - 20.0 mi

Top 17%
×5stories
+64ft-50ft

Overall

4642

Males

4261

M18-39

4261

20M→21M

20.0 - 21.0 mi

Top 23%
×8stories
+106ft-24ft

Overall

6079

Males

5248

M18-39

5248

21M→35K

21.0 - 21.8 mi

Top 21%
×7stories
+17ft-86ft

Overall

5689

Males

5020

M18-39

5020

35K→23M

21.8 - 23.0 mi

Top 25%
×5stories
+23ft-63ft

Overall

6701

Males

5632

M18-39

5632

23M→24M

23.0 - 24.0 mi

Top 27%
×6stories
+12ft-82ft

Overall

7136

Males

5786

M18-39

5786

24M→40K

24.0 - 24.9 mi

Top 35%
×1story
+6ft-20ft

Overall

9395

Males

7022

M18-39

7022

40K→25.2M

24.9 - 25.2 mi

Top 80%
×1story
+13ft-16ft

Overall

21413

Males

12562

M18-39

12562

25.2M→Finish

25.2 - 26.2 mi

Top 69%
×2stories
+22ft-21ft

Overall

18324

Males

11217

M18-39

11217

Passing Analysis

Category:
Athletes Passed
1614
Passed By
1668
Net Change
-54
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6310
5K → 10K41583-542#6310#6852
10K → 15K34317+326#6852#6526
15K → 20K3254+321#6526#6205
20K → Half508+42#6205#6163
Half → 25K2475+242#6163#5921
25K → 30K23732+205#5921#5716
30K → 20M12412+112#5716#5604
20M → 21M5651+5#5604#5599
21M → 35K4019+21#5599#5578
35K → 23M7178-7#5578#5585
23M → 24M4853-5#5585#5590
24M → 40K2792-65#5590#5655
40K → 25.2M0279-279#5655#5934
25.2M → Finish5435-430#5934#6364
TOTALS16141668-54
📊

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