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BOSTON MARATHON 2023

Nicolas Veldhorst

Bib: 1498•M

WA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 5%
Gender (Male)
#0 / 15176
Top 8%
Division (M18-39)
#0 / 5285
Top 19%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:56
Rank: #1870
Start → 5K
19:56 | 6:25/mi
10K· 6.21 mi
39:58
Rank: #2136 (-266)
5K → 10K
20:02 | 6:27/mi
15K· 9.32 mi
1:00:02
Rank: #2205 (-69)
10K → 15K
20:04 | 6:28/mi
20K· 12.43 mi
1:20:09
Rank: #2192 (+13)
15K → 20K
20:07 | 6:28/mi
Half· 13.11 mi
1:24:28
Rank: #2170 (+22)
20K → Half
4:19 | 6:20/mi
25K· 15.53 mi
1:40:19
Rank: #2182 (-12)
Half → 25K
15:51 | 6:32/mi
30K· 18.64 mi
2:00:30
Rank: #2044 (+138)
25K → 30K
20:11 | 6:30/mi
20M
2:09:12
Rank: #1935 (+109)
30K → 20M
8:42 | 6:24/mi
21M
2:15:36
Rank: #1806 (+129)
20M → 21M
6:24 | 6:24/mi
35K· 21.75 mi
2:20:01
Rank: #1713 (+93)
21M → 35K
4:25 | 5:54/mi
23M
2:27:31
Rank: #1577 (+136)
35K → 23M
7:30 | 5:59/mi
24M
2:33:23
Rank: #1464 (+113)
23M → 24M
5:52 | 5:52/mi
40K· 24.85 mi
2:38:27
Rank: #1383 (+81)
24M → 40K
5:04 | 5:56/mi
25.2M
2:40:39
Rank: #1352 (+31)
40K → 25.2M
2:12 | 6:23/mi
Finish· 26.22 mi
2:46:29
Rank: #1263 (+89)
25.2M → Finish
5:50 | 5:43/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:24:28
Pace6:27 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:22:01
Pace6:15 /mi
📊Negative Split: 2.9% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:2819:566:2519:56
6:25
-
10K
6.21 mi10:40:3039:586:2620:02
6:27
+0:02
15K
9.32 mi11:00:341:00:026:2620:04
6:28
+0:01
20K
12.43 mi11:20:411:20:096:2720:07
6:28
0:00
Half
13.11 mi11:25:001:24:286:274:19
6:20
-0:08
25K
15.53 mi11:40:511:40:196:2715:51
6:32
+0:12
30K
18.64 mi12:01:022:00:306:2820:11
6:30
-0:02
20M
20.00 mi12:09:442:09:126:288:42
6:24
-0:06
21M
21.00 mi12:16:082:15:366:276:24
6:24
0:00
35K
21.75 mi12:20:332:20:016:264:25
5:54
-0:30
23M
23.00 mi12:28:032:27:316:257:30
5:59
+0:05
24M
24.00 mi12:33:552:33:236:235:52
5:52
-0:07
40K
24.85 mi12:38:592:38:276:235:04
5:56
+0:04
25.2M
25.20 mi12:41:112:40:396:232:12
6:23
+0:27
Finish
26.22 mi12:47:012:46:296:215:50
5:43
-0:40

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

6:21 /mi

Slowest Pace

6:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

28:41

17% of race

Time at Steady Pace

2:17:48

83% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:21 /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 mi10:20:2819:566:2519:56
6:25
#1870
10K
6.21 mi10:40:3039:586:2620:02
6:27
#2136
15K
9.32 mi11:00:341:00:026:2620:04
6:28
#2205
20K
12.43 mi11:20:411:20:096:2720:07
6:28
#2192
Half
13.11 mi11:25:001:24:286:274:19
6:20
#2170
25K
15.53 mi11:40:511:40:196:2715:51
6:32
#2182
30K
18.64 mi12:01:022:00:306:2820:11
6:30
#2044
20M
20.00 mi12:09:442:09:126:288:42
6:24
#1935
21M
21.00 mi12:16:082:15:366:276:24
6:24
#1806
35K
21.75 mi12:20:332:20:016:264:25
5:54
#1713
23M
23.00 mi12:28:032:27:316:257:30
5:59
#1577
24M
24.00 mi12:33:552:33:236:235:52
5:52
#1464
40K
24.85 mi12:38:592:38:276:235:04
5:56
#1383
25.2M
25.20 mi12:41:112:40:396:232:12
6:23
#1352
Finish
26.22 mi12:47:012:46:296:215:50
5:43
#1263
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1870178317832390(Top 9%)2293(Top 15%)2293(Top 43%)
10K6.21 mi3.10 mi2136-2662045-2622045-2622470(Top 9%)2361(Top 16%)2361(Top 45%)
15K9.32 mi3.11 mi2205-692114-692114-692390(Top 9%)2293(Top 15%)2293(Top 43%)
20K12.43 mi3.11 mi2192+132100+142100+142140(Top 8%)2052(Top 14%)2052(Top 39%)
Half13.11 mi0.68 mi2170+222078+222078+221838(Top 7%)1763(Top 12%)1763(Top 33%)
25K15.53 mi2.42 mi2182-122093-152093-152347(Top 9%)2247(Top 15%)2247(Top 43%)
30K18.64 mi3.11 mi2044+1381960+1331960+1331534(Top 6%)1469(Top 10%)1469(Top 28%)
20M20.00 mi1.36 mi1935+1091853+1071853+1071136(Top 4%)1086(Top 7%)1086(Top 21%)
21M21.00 mi1.00 mi1806+1291729+1241729+124499(Top 2%)465(Top 3%)465(Top 9%)
35K21.75 mi0.75 mi1713+931640+891640+89528(Top 2%)492(Top 3%)492(Top 9%)
23M23.00 mi1.25 mi1577+1361507+1331507+133301(Top 1%)276(Top 2%)276(Top 5%)
24M24.00 mi1.00 mi1464+1131396+1111396+111351(Top 1%)325(Top 2%)325(Top 6%)
40K24.85 mi0.85 mi1383+811318+781318+78264(Top 1.0%)241(Top 2%)241(Top 5%)
25.2M25.20 mi0.35 mi1352+311288+301288+30350(Top 1%)329(Top 2%)329(Top 6%)
Finish26.22 mi1.02 mi1263+891204+841204+84276(Top 1%)259(Top 2%)259(Top 5%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 9%
×21stories
+97ft-345ft

Overall

2390

Males

2293

M18-39

2293

5K→10K

3.1 - 6.2 mi

Top 9%
×5stories
+79ft-138ft

Overall

2470

Males

2361

M18-39

2361

10K→15K

6.2 - 9.3 mi

Top 9%
×3stories
+67ft-78ft

Overall

2390

Males

2293

M18-39

2293

15K→20K

9.3 - 12.4 mi

Top 8%
×5stories
+106ft-86ft

Overall

2140

Males

2052

M18-39

2052

20K→Half

12.4 - 13.1 mi

Top 7%
×2stories
+19ft-37ft

Overall

1838

Males

1763

M18-39

1763

Half→25K

13.1 - 15.5 mi

Top 9%
×4stories
+66ft-88ft

Overall

2347

Males

2247

M18-39

2247

25K→30K

15.5 - 18.6 mi

Top 6%
×9stories
+181ft-148ft

Overall

1534

Males

1469

M18-39

1469

30K→20M

18.6 - 20.0 mi

Top 4%
×5stories
+64ft-50ft

Overall

1136

Males

1086

M18-39

1086

20M→21M

20.0 - 21.0 mi

Top 2%
×8stories
+106ft-24ft

Overall

499

Males

465

M18-39

465

21M→35K

21.0 - 21.8 mi

Top 2%
×7stories
+17ft-86ft

Overall

528

Males

492

M18-39

492

35K→23M

21.8 - 23.0 mi

Top 1%
×5stories
+23ft-63ft

Overall

301

Males

276

M18-39

276

23M→24M

23.0 - 24.0 mi

Top 1%
×6stories
+12ft-82ft

Overall

351

Males

325

M18-39

325

24M→40K

24.0 - 24.9 mi

Top 1.0%
×1story
+6ft-20ft

Overall

264

Males

241

M18-39

241

40K→25.2M

24.9 - 25.2 mi

Top 1%
×1story
+13ft-16ft

Overall

350

Males

329

M18-39

329

25.2M→Finish

25.2 - 26.2 mi

Top 1%
×2stories
+22ft-21ft

Overall

276

Males

259

M18-39

259

Passing Analysis

Category:
Athletes Passed
1138
Passed By
531
Net Change
+607
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1870
5K → 10K32298-266#1870#2136
10K → 15K39108-69#2136#2205
15K → 20K6350+13#2205#2192
20K → Half253+22#2192#2170
Half → 25K4052-12#2170#2182
25K → 30K15416+138#2182#2044
30K → 20M1112+109#2044#1935
20M → 21M1290+129#1935#1806
21M → 35K930+93#1806#1713
35K → 23M1360+136#1713#1577
23M → 24M1130+113#1577#1464
24M → 40K810+81#1464#1383
40K → 25.2M332+31#1383#1352
25.2M → Finish890+89#1352#1263
TOTALS1138531+607
📊

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