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BOSTON MARATHON 2023

Nathan Smith

Bib: 4570•M

CA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 13%
Gender (Male)
#0 / 15176
Top 21%
Division (M18-39)
#0 / 5285
Top 44%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:57
Rank: #4057
Start → 5K
20:57 | 6:45/mi
10K· 6.21 mi
41:23
Rank: #3617 (+440)
5K → 10K
20:26 | 6:35/mi
15K· 9.32 mi
1:02:35
Rank: #4150 (-533)
10K → 15K
21:12 | 6:49/mi
20K· 12.43 mi
1:23:17
Rank: #3878 (+272)
15K → 20K
20:42 | 6:40/mi
Half· 13.11 mi
1:27:46
Rank: #3844 (+34)
20K → Half
4:29 | 6:34/mi
25K· 15.53 mi
1:44:02
Rank: #3744 (+100)
Half → 25K
16:16 | 6:43/mi
30K· 18.64 mi
2:05:34
Rank: #3738 (+6)
25K → 30K
21:32 | 6:56/mi
20M
2:14:52
Rank: #3640 (+98)
30K → 20M
9:18 | 6:51/mi
21M
2:21:47
Rank: #3465 (+175)
20M → 21M
6:55 | 6:55/mi
35K· 21.75 mi
2:26:46
Rank: #3431 (+34)
21M → 35K
4:59 | 6:40/mi
23M
2:35:38
Rank: #3467 (-36)
35K → 23M
8:52 | 7:05/mi
24M
2:42:35
Rank: #3507 (-40)
23M → 24M
6:57 | 6:57/mi
40K· 24.85 mi
2:48:36
Rank: #3512 (-5)
24M → 40K
6:01 | 7:02/mi
25.2M
2:51:09
Rank: #3496 (+16)
40K → 25.2M
2:33 | 7:24/mi
Finish· 26.22 mi
2:57:45
Rank: #3410 (+86)
25.2M → Finish
6:36 | 6:29/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:46
Pace6:42 /mi
2nd Half
Distance13.11 mi
Time1:29:59
Pace6:52 /mi
📊Positive Split: 2.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:5520:576:4520:57
6:45
-
10K
6.21 mi10:43:2141:236:4020:26
6:35
-0:10
15K
9.32 mi11:04:331:02:356:4321:12
6:49
+0:14
20K
12.43 mi11:25:151:23:176:4220:42
6:40
-0:09
Half
13.11 mi11:29:441:27:466:424:29
6:34
-0:06
25K
15.53 mi11:46:001:44:026:4216:16
6:43
+0:09
30K
18.64 mi12:07:322:05:346:4421:32
6:56
+0:13
20M
20.00 mi12:16:502:14:526:459:18
6:51
-0:05
21M
21.00 mi12:23:452:21:476:456:55
6:55
+0:04
35K
21.75 mi12:28:442:26:466:454:59
6:40
-0:15
23M
23.00 mi12:37:362:35:386:468:52
7:05
+0:25
24M
24.00 mi12:44:332:42:356:466:57
6:57
-0:08
40K
24.85 mi12:50:342:48:366:476:01
7:02
+0:05
25.2M
25.20 mi12:53:072:51:096:482:33
7:24
+0:22
Finish
26.22 mi12:59:432:57:456:476:36
6:29
-0:55

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

6:29 /mi

Average Pace

6:47 /mi

Slowest Pace

7:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:55:12

99% of race

Time at Steady Pace

2:33

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:47 /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 mi10:22:5520:576:4520:57
6:45
#4057
10K
6.21 mi10:43:2141:236:4020:26
6:35
#3617
15K
9.32 mi11:04:331:02:356:4321:12
6:49
#4150
20K
12.43 mi11:25:151:23:176:4220:42
6:40
#3878
Half
13.11 mi11:29:441:27:466:424:29
6:34
#3844
25K
15.53 mi11:46:001:44:026:4216:16
6:43
#3744
30K
18.64 mi12:07:322:05:346:4421:32
6:56
#3738
20M
20.00 mi12:16:502:14:526:459:18
6:51
#3640
21M
21.00 mi12:23:452:21:476:456:55
6:55
#3465
35K
21.75 mi12:28:442:26:466:454:59
6:40
#3431
23M
23.00 mi12:37:362:35:386:468:52
7:05
#3467
24M
24.00 mi12:44:332:42:356:466:57
6:57
#3507
40K
24.85 mi12:50:342:48:366:476:01
7:02
#3512
25.2M
25.20 mi12:53:072:51:096:482:33
7:24
#3496
Finish
26.22 mi12:59:432:57:456:476:36
6:29
#3410
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4057380438045314(Top 20%)4906(Top 32%)4906(Top 93%)
10K6.21 mi3.10 mi3617+4403412+3923412+3923322(Top 12%)3161(Top 21%)3161(Top 60%)
15K9.32 mi3.11 mi4150-5333896-4843896-4845314(Top 20%)4906(Top 32%)4906(Top 93%)
20K12.43 mi3.11 mi3878+2723655+2413655+2413277(Top 12%)3111(Top 20%)3111(Top 59%)
Half13.11 mi0.68 mi3844+343627+283627+283241(Top 12%)3091(Top 20%)3091(Top 58%)
25K15.53 mi2.42 mi3744+1003539+883539+883419(Top 13%)3240(Top 21%)3240(Top 61%)
30K18.64 mi3.11 mi3738+63530+93530+93866(Top 15%)3621(Top 24%)3621(Top 69%)
20M20.00 mi1.36 mi3640+983440+903440+903084(Top 12%)2898(Top 19%)2898(Top 55%)
21M21.00 mi1.00 mi3465+1753281+1593281+1591842(Top 7%)1754(Top 12%)1754(Top 33%)
35K21.75 mi0.75 mi3431+343248+333248+333342(Top 13%)3112(Top 21%)3112(Top 59%)
23M23.00 mi1.25 mi3467-363279-313279-314190(Top 16%)3833(Top 25%)3833(Top 73%)
24M24.00 mi1.00 mi3507-403314-353314-354394(Top 17%)3969(Top 26%)3969(Top 75%)
40K24.85 mi0.85 mi3512-53316-23316-24008(Top 15%)3590(Top 24%)3590(Top 68%)
25.2M25.20 mi0.35 mi3496+163300+163300+163369(Top 13%)3052(Top 20%)3052(Top 58%)
Finish26.22 mi1.02 mi3410+863214+863214+862377(Top 9%)2195(Top 14%)2195(Top 42%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 20%
×21stories
+97ft-345ft

Overall

5314

Males

4906

M18-39

4906

5K→10K

3.1 - 6.2 mi

Top 12%
×5stories
+79ft-138ft

Overall

3322

Males

3161

M18-39

3161

10K→15K

6.2 - 9.3 mi

Top 20%
×3stories
+67ft-78ft

Overall

5314

Males

4906

M18-39

4906

15K→20K

9.3 - 12.4 mi

Top 12%
×5stories
+106ft-86ft

Overall

3277

Males

3111

M18-39

3111

20K→Half

12.4 - 13.1 mi

Top 12%
×2stories
+19ft-37ft

Overall

3241

Males

3091

M18-39

3091

Half→25K

13.1 - 15.5 mi

Top 13%
×4stories
+66ft-88ft

Overall

3419

Males

3240

M18-39

3240

25K→30K

15.5 - 18.6 mi

Top 15%
×9stories
+181ft-148ft

Overall

3866

Males

3621

M18-39

3621

30K→20M

18.6 - 20.0 mi

Top 12%
×5stories
+64ft-50ft

Overall

3084

Males

2898

M18-39

2898

20M→21M

20.0 - 21.0 mi

Top 7%
×8stories
+106ft-24ft

Overall

1842

Males

1754

M18-39

1754

21M→35K

21.0 - 21.8 mi

Top 13%
×7stories
+17ft-86ft

Overall

3342

Males

3112

M18-39

3112

35K→23M

21.8 - 23.0 mi

Top 16%
×5stories
+23ft-63ft

Overall

4190

Males

3833

M18-39

3833

23M→24M

23.0 - 24.0 mi

Top 17%
×6stories
+12ft-82ft

Overall

4394

Males

3969

M18-39

3969

24M→40K

24.0 - 24.9 mi

Top 15%
×1story
+6ft-20ft

Overall

4008

Males

3590

M18-39

3590

40K→25.2M

24.9 - 25.2 mi

Top 13%
×1story
+13ft-16ft

Overall

3369

Males

3052

M18-39

3052

25.2M→Finish

25.2 - 26.2 mi

Top 9%
×2stories
+22ft-21ft

Overall

2377

Males

2195

M18-39

2195

Passing Analysis

Category:
Athletes Passed
1674
Passed By
1027
Net Change
+647
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4057
5K → 10K50464+440#4057#3617
10K → 15K21554-533#3617#4150
15K → 20K28816+272#4150#3878
20K → Half428+34#3878#3844
Half → 25K13131+100#3844#3744
25K → 30K109103+6#3744#3738
30K → 20M10810+98#3738#3640
20M → 21M1805+175#3640#3465
21M → 35K5218+34#3465#3431
35K → 23M4884-36#3431#3467
23M → 24M2565-40#3467#3507
24M → 40K3944-5#3507#3512
40K → 25.2M2812+16#3512#3496
25.2M → Finish9913+86#3496#3410
TOTALS16741027+647
📊

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