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BOSTON MARATHON 2023

David Nilges

Bib: 2279•M

CO

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 45%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:03
Rank: #2047
Start → 5K
20:03 | 6:27/mi
10K· 6.21 mi
39:18
Rank: #1672 (+375)
5K → 10K
19:15 | 6:12/mi
15K· 9.32 mi
58:09
Rank: #1322 (+350)
10K → 15K
18:51 | 6:04/mi
20K· 12.43 mi
1:17:07
Rank: #1171 (+151)
15K → 20K
18:58 | 6:06/mi
Half· 13.11 mi
1:21:18
Rank: #1166 (+5)
20K → Half
4:11 | 6:08/mi
25K· 15.53 mi
1:36:55
Rank: #1247 (-81)
Half → 25K
15:37 | 6:26/mi
30K· 18.64 mi
1:58:23
Rank: #1543 (-296)
25K → 30K
21:28 | 6:55/mi
20M
2:08:13
Rank: #1710 (-167)
30K → 20M
9:50 | 7:14/mi
21M
2:16:11
Rank: #1940 (-230)
20M → 21M
7:58 | 7:58/mi
35K· 21.75 mi
2:21:36
Rank: #2063 (-123)
21M → 35K
5:25 | 7:14/mi
23M
2:31:57
Rank: #2425 (-362)
35K → 23M
10:21 | 8:16/mi
24M
2:39:45
Rank: #2681 (-256)
23M → 24M
7:48 | 7:48/mi
40K· 24.85 mi
2:46:47
Rank: #2977 (-296)
24M → 40K
7:02 | 8:14/mi
25.2M
2:50:11
Rank: #3224 (-247)
40K → 25.2M
3:24 | 9:52/mi
Finish· 26.22 mi
2:57:49
Rank: #3436 (-212)
25.2M → Finish
7:38 | 7:29/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:21:18
Pace6:12 /mi
2nd Half
Distance13.11 mi
Time1:36:31
Pace7:22 /mi
📊Positive Split: 18.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:5920:036:2720:03
6:27
-
10K
6.21 mi10:40:1439:186:1919:15
6:12
-0:15
15K
9.32 mi10:59:0558:096:1418:51
6:04
-0:08
20K
12.43 mi11:18:031:17:076:1218:58
6:06
+0:02
Half
13.11 mi11:22:141:21:186:124:11
6:08
+0:02
25K
15.53 mi11:37:511:36:556:1415:37
6:26
+0:18
30K
18.64 mi11:59:191:58:236:2121:28
6:55
+0:29
20M
20.00 mi12:09:092:08:136:259:50
7:14
+0:19
21M
21.00 mi12:17:072:16:116:297:58
7:58
+0:44
35K
21.75 mi12:22:322:21:366:315:25
7:14
-0:44
23M
23.00 mi12:32:532:31:576:3610:21
8:16
+1:02
24M
24.00 mi12:40:412:39:456:397:48
7:48
-0:28
40K
24.85 mi12:47:432:46:476:437:02
8:14
+0:26
25.2M
25.20 mi12:51:072:50:116:453:24
9:52
+1:38
Finish
26.22 mi12:58:452:57:496:477:38
7:29
-2:23

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

6:04 /mi

Average Pace

6:47 /mi

Slowest Pace

9:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:36:55

55% of race

Time at Steady Pace

44:21

25% of race

Time at Slower Pace

36:33

21% 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 mi10:20:5920:036:2720:03
6:27
#2047
10K
6.21 mi10:40:1439:186:1919:15
6:12
#1672
15K
9.32 mi10:59:0558:096:1418:51
6:04
#1322
20K
12.43 mi11:18:031:17:076:1218:58
6:06
#1171
Half
13.11 mi11:22:141:21:186:124:11
6:08
#1166
25K
15.53 mi11:37:511:36:556:1415:37
6:26
#1247
30K
18.64 mi11:59:191:58:236:2121:28
6:55
#1543
20M
20.00 mi12:09:092:08:136:259:50
7:14
#1710
21M
21.00 mi12:17:072:16:116:297:58
7:58
#1940
35K
21.75 mi12:22:322:21:366:315:25
7:14
#2063
23M
23.00 mi12:32:532:31:576:3610:21
8:16
#2425
24M
24.00 mi12:40:412:39:456:397:48
7:48
#2681
40K
24.85 mi12:47:432:46:476:437:02
8:14
#2977
25.2M
25.20 mi12:51:072:50:116:453:24
9:52
#3224
Finish
26.22 mi12:58:452:57:496:477:38
7:29
#3436
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi204719531953880(Top 3%)833(Top 5%)833(Top 16%)
10K6.21 mi3.10 mi1672+3751597+3561597+3561352(Top 5%)1289(Top 8%)1289(Top 24%)
15K9.32 mi3.11 mi1322+3501258+3391258+339880(Top 3%)833(Top 5%)833(Top 16%)
20K12.43 mi3.11 mi1171+1511115+1431115+143798(Top 3%)754(Top 5%)754(Top 14%)
Half13.11 mi0.68 mi1166+51110+51110+51147(Top 4%)1096(Top 7%)1096(Top 21%)
25K15.53 mi2.42 mi1247-811192-821192-821923(Top 7%)1843(Top 12%)1843(Top 35%)
30K18.64 mi3.11 mi1543-2961474-2821474-2823710(Top 14%)3482(Top 23%)3482(Top 66%)
20M20.00 mi1.36 mi1710-1671636-1621636-1625272(Top 20%)4747(Top 31%)4747(Top 90%)
21M21.00 mi1.00 mi1940-2301856-2201856-2207090(Top 27%)5906(Top 39%)5906(Top 112%)
35K21.75 mi0.75 mi2063-1231979-1231979-1236714(Top 25%)5700(Top 38%)5700(Top 108%)
23M23.00 mi1.25 mi2425-3622321-3422321-34211597(Top 44%)8271(Top 55%)8271(Top 156%)
24M24.00 mi1.00 mi2681-2562558-2372558-2379737(Top 37%)7243(Top 48%)7243(Top 137%)
40K24.85 mi0.85 mi2977-2962824-2662824-26611477(Top 43%)8043(Top 53%)8043(Top 152%)
25.2M25.20 mi0.35 mi3224-2473050-2263050-22616709(Top 63%)10395(Top 68%)10395(Top 197%)
Finish26.22 mi1.02 mi3436-2123239-1893239-1898422(Top 32%)6398(Top 42%)6398(Top 121%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 3%
×21stories
+97ft-345ft

Overall

880

Males

833

M18-39

833

5K→10K

3.1 - 6.2 mi

Top 5%
×5stories
+79ft-138ft

Overall

1352

Males

1289

M18-39

1289

10K→15K

6.2 - 9.3 mi

Top 3%
×3stories
+67ft-78ft

Overall

880

Males

833

M18-39

833

15K→20K

9.3 - 12.4 mi

Top 3%
×5stories
+106ft-86ft

Overall

798

Males

754

M18-39

754

20K→Half

12.4 - 13.1 mi

Top 4%
×2stories
+19ft-37ft

Overall

1147

Males

1096

M18-39

1096

Half→25K

13.1 - 15.5 mi

Top 7%
×4stories
+66ft-88ft

Overall

1923

Males

1843

M18-39

1843

25K→30K

15.5 - 18.6 mi

Top 14%
×9stories
+181ft-148ft

Overall

3710

Males

3482

M18-39

3482

30K→20M

18.6 - 20.0 mi

Top 20%
×5stories
+64ft-50ft

Overall

5272

Males

4747

M18-39

4747

20M→21M

20.0 - 21.0 mi

Top 27%
×8stories
+106ft-24ft

Overall

7090

Males

5906

M18-39

5906

21M→35K

21.0 - 21.8 mi

Top 25%
×7stories
+17ft-86ft

Overall

6714

Males

5700

M18-39

5700

35K→23M

21.8 - 23.0 mi

Top 44%
×5stories
+23ft-63ft

Overall

11597

Males

8271

M18-39

8271

23M→24M

23.0 - 24.0 mi

Top 37%
×6stories
+12ft-82ft

Overall

9737

Males

7243

M18-39

7243

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

11477

Males

8043

M18-39

8043

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1story
+13ft-16ft

Overall

16709

Males

10395

M18-39

10395

25.2M→Finish

25.2 - 26.2 mi

Top 32%
×2stories
+22ft-21ft

Overall

8422

Males

6398

M18-39

6398

Passing Analysis

Category:
Athletes Passed
944
Passed By
2333
Net Change
-1389
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2047
5K → 10K3838+375#2047#1672
10K → 15K3500+350#1672#1322
15K → 20K1532+151#1322#1171
20K → Half94+5#1171#1166
Half → 25K889-81#1166#1247
25K → 30K13309-296#1247#1543
30K → 20M3170-167#1543#1710
20M → 21M3233-230#1710#1940
21M → 35K3126-123#1940#2063
35K → 23M3365-362#2063#2425
23M → 24M3259-256#2425#2681
24M → 40K5301-296#2681#2977
40K → 25.2M0247-247#2977#3224
25.2M → Finish8220-212#3224#3436
TOTALS9442333-1389
📊

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