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BOSTON MARATHON 2023

Nicholas Santorelli

Bib: 4851•M

GA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 12%
Gender (Male)
#0 / 15176
Top 19%
Division (M18-39)
#0 / 5285
Top 41%
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
6:40/mi
20:44
↑ 97↓ 3451.5%
10K· 6.21 mi
6:38/mi
41:19
↑ 79↓ 1380.4%
15K· 9.32 mi
7:00/mi
1:03:05
↑ 67↓ 78
20K· 12.43 mi
8:00/mi
1:27:57
↑ 106↓ 860.1%
Half· 13.11 mi
6:20/mi
1:32:16
↑ 19↓ 370.5%
25K· 15.53 mi
6:36/mi
1:48:16
↑ 66↓ 880.2%
30K· 18.64 mi
6:44/mi
2:09:10
↑ 181↓ 1480.2%
20M
6:31/mi
2:18:02
↑ 64↓ 500.2%
21M
6:40/mi
2:24:42
↑ 106↓ 241.6%
35K· 21.75 mi
6:12/mi
2:29:20
↑ 17↓ 861.7%
23M
6:23/mi
2:37:19
↑ 23↓ 630.6%
24M
6:06/mi
2:43:25
↓ 821.3%
40K· 24.85 mi
6:07/mi
2:48:39
↓ 200.3%
25.2M
6:14/mi
2:50:48
↑ 13↓ 160.2%
Finish· 26.22 mi
5:43/mi
2:56:38
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:32:16
Pace7:02 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:24:22
Pace6:26 /mi
📊Negative Split: 8.6% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:5820:446:4020:44
6:40
-
10K
6.21 mi10:43:3341:196:3920:35
6:38
-0:02
15K
9.32 mi11:05:191:03:056:4621:46
7:00
+0:22
20K
12.43 mi11:30:111:27:577:0524:52
8:00
+1:00
Half
13.11 mi11:34:301:32:167:024:19
6:20
-1:40
25K
15.53 mi11:50:301:48:166:5816:00
6:36
+0:16
30K
18.64 mi12:11:242:09:106:5620:54
6:44
+0:08
20M
20.00 mi12:20:162:18:026:548:52
6:31
-0:13
21M
21.00 mi12:26:562:24:426:536:40
6:40
+0:09
35K
21.75 mi12:31:342:29:206:524:38
6:12
-0:28
23M
23.00 mi12:39:332:37:196:507:59
6:23
+0:11
24M
24.00 mi12:45:392:43:256:496:06
6:06
-0:17
40K
24.85 mi12:50:532:48:396:475:14
6:07
+0:01
25.2M
25.20 mi12:53:022:50:486:472:09
6:14
+0:07
Finish
26.22 mi12:58:522:56:386:455:50
5:43
-0:31

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

5:43 /mi

Average Pace

6:45 /mi

Slowest Pace

8:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

23:57

14% of race

Time at Steady Pace

1:46:03

60% of race

Time at Slower Pace

46:38

26% of race

Average Pace: 6:44 /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 mi10:22:5820:446:4020:44
6:40
#3412
10K
6.21 mi10:43:3341:196:3920:35
6:38
#3523
15K
9.32 mi11:05:191:03:056:4621:46
7:00
#4677
20K
12.43 mi11:30:111:27:577:0524:52
8:00
#6786
Half
13.11 mi11:34:301:32:167:024:19
6:20
#6574
25K
15.53 mi11:50:301:48:166:5816:00
6:36
#6017
30K
18.64 mi12:11:242:09:106:5620:54
6:44
#5400
20M
20.00 mi12:20:162:18:026:548:52
6:31
#4992
21M
21.00 mi12:26:562:24:426:536:40
6:40
#4667
35K
21.75 mi12:31:342:29:206:524:38
6:12
#4456
23M
23.00 mi12:39:332:37:196:507:59
6:23
#4110
24M
24.00 mi12:45:392:43:256:496:06
6:06
#3811
40K
24.85 mi12:50:532:48:396:475:14
6:07
#3523
25.2M
25.20 mi12:53:022:50:486:472:09
6:14
#3413
Finish
26.22 mi12:58:522:56:386:455:50
5:43
#3094
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3412321532156574(Top 25%)5914(Top 39%)5914(Top 112%)
10K6.21 mi3.10 mi3523-1113326-1113326-1113675(Top 14%)3471(Top 23%)3471(Top 66%)
15K9.32 mi3.11 mi4677-11544358-10324358-10326574(Top 25%)5914(Top 39%)5914(Top 112%)
20K12.43 mi3.11 mi6786-21096087-17296087-172913438(Top 50%)9630(Top 63%)9630(Top 182%)
Half13.11 mi0.68 mi6574+2125914+1735914+1731926(Top 7%)1851(Top 12%)1851(Top 35%)
25K15.53 mi2.42 mi6017+5575495+4195495+4192714(Top 10%)2598(Top 17%)2598(Top 49%)
30K18.64 mi3.11 mi5400+6174983+5124983+5122550(Top 10%)2425(Top 16%)2425(Top 46%)
20M20.00 mi1.36 mi4992+4084629+3544629+3541562(Top 6%)1490(Top 10%)1490(Top 28%)
21M21.00 mi1.00 mi4667+3254346+2834346+2831024(Top 4%)976(Top 6%)976(Top 18%)
35K21.75 mi0.75 mi4456+2114155+1914155+1911252(Top 5%)1195(Top 8%)1195(Top 23%)
23M23.00 mi1.25 mi4110+3463848+3073848+3071050(Top 4%)997(Top 7%)997(Top 19%)
24M24.00 mi1.00 mi3811+2993581+2673581+267772(Top 3%)732(Top 5%)732(Top 14%)
40K24.85 mi0.85 mi3523+2883326+2553326+255533(Top 2%)504(Top 3%)504(Top 10%)
25.2M25.20 mi0.35 mi3413+1103224+1023224+102197(Top 0.7%)178(Top 1%)178(Top 3%)
Finish26.22 mi1.02 mi3094+3192929+2952929+295278(Top 1%)261(Top 2%)261(Top 5%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 25%
×21story building
+97ft-345ft

Overall

6574

Males

5914

M18-39

5914

5K→10K

3.1 - 6.2 mi

Top 14%
×5story building
+79ft-138ft

Overall

3675

Males

3471

M18-39

3471

10K→15K

6.2 - 9.3 mi

Top 25%
×3story building
+67ft-78ft

Overall

6574

Males

5914

M18-39

5914

15K→20K

9.3 - 12.4 mi

Top 50%
×5story building
+106ft-86ft

Overall

13438

Males

9630

M18-39

9630

20K→Half

12.4 - 13.1 mi

Top 7%
×2story building
+19ft-37ft

Overall

1926

Males

1851

M18-39

1851

Half→25K

13.1 - 15.5 mi

Top 10%
×4story building
+66ft-88ft

Overall

2714

Males

2598

M18-39

2598

25K→30K

15.5 - 18.6 mi

Top 10%
×9story building
+181ft-148ft

Overall

2550

Males

2425

M18-39

2425

30K→20M

18.6 - 20.0 mi

Top 6%
×5story building
+64ft-50ft

Overall

1562

Males

1490

M18-39

1490

20M→21M

20.0 - 21.0 mi

Top 4%
×8story building
+106ft-24ft

Overall

1024

Males

976

M18-39

976

21M→35K

21.0 - 21.8 mi

Top 5%
×7story building
+17ft-86ft

Overall

1252

Males

1195

M18-39

1195

35K→23M

21.8 - 23.0 mi

Top 4%
×5story building
+23ft-63ft

Overall

1050

Males

997

M18-39

997

23M→24M

23.0 - 24.0 mi

Top 3%
×6story building
+12ft-82ft

Overall

772

Males

732

M18-39

732

24M→40K

24.0 - 24.9 mi

Top 2%
×1story
+6ft-20ft

Overall

533

Males

504

M18-39

504

40K→25.2M

24.9 - 25.2 mi

Top 0.7%
×1story
+13ft-16ft

Overall

197

Males

178

M18-39

178

25.2M→Finish

25.2 - 26.2 mi

Top 1%
×2story building
+22ft-21ft

Overall

278

Males

261

M18-39

261

Passing Analysis

Category:
Athletes Passed
3842
Passed By
3524
Net Change
+318
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3412
5K → 10K141252-111#3412#3523
10K → 15K71161-1154#3523#4677
15K → 20K22111-2109#4677#6786
20K → Half2120+212#6786#6574
Half → 25K5570+557#6574#6017
25K → 30K6170+617#6017#5400
30K → 20M4080+408#5400#4992
20M → 21M3250+325#4992#4667
21M → 35K2110+211#4667#4456
35K → 23M3460+346#4456#4110
23M → 24M2990+299#4110#3811
24M → 40K2880+288#3811#3523
40K → 25.2M1100+110#3523#3413
25.2M → Finish3190+319#3413#3094
TOTALS38423524+318
📊

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