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BOSTON MARATHON 2023

David Tannenwald

Bib: 25626•M

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Division (M18-39)
#0 / 5285
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
11:57/mi
37:09
↑ 97↓ 3451.5%
10K· 6.21 mi
12:54/mi
1:17:15
↑ 79↓ 1380.4%
15K· 9.32 mi
11:52/mi
1:54:07
↑ 67↓ 78
20K· 12.43 mi
11:37/mi
2:30:11
↑ 106↓ 860.1%
Half· 13.11 mi
11:27/mi
2:38:00
↑ 19↓ 370.5%
25K· 15.53 mi
11:28/mi
3:05:48
↑ 66↓ 880.2%
30K· 18.64 mi
11:31/mi
3:41:34
↑ 181↓ 1480.2%
20M
11:55/mi
3:57:46
↑ 64↓ 500.2%
21M
11:26/mi
4:09:12
↑ 106↓ 241.6%
35K· 21.75 mi
10:15/mi
4:16:52
↑ 17↓ 861.7%
23M
9:35/mi
4:28:52
↑ 23↓ 630.6%
24M
9:36/mi
4:38:28
↓ 821.3%
40K· 24.85 mi
9:06/mi
4:46:15
↓ 200.3%
25.2M
10:00/mi
4:49:42
↑ 13↓ 160.2%
Finish· 26.22 mi
8:05/mi
4:57:56
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time2:38:00
Pace12:03 /mi
2nd Half✓ Faster
Distance13.11 mi
Time2:19:56
Pace10:40 /mi
📊Negative Split: 11.4% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:53:2537:0911:5737:09
11:57
-
10K
6.21 mi12:33:311:17:1512:2640:06
12:54
+0:57
15K
9.32 mi13:10:231:54:0712:1536:52
11:52
-1:02
20K
12.43 mi13:46:272:30:1112:0536:04
11:37
-0:15
Half
13.11 mi13:54:162:38:0012:037:49
11:27
-0:10
25K
15.53 mi14:22:043:05:4811:5827:48
11:28
+0:01
30K
18.64 mi14:57:503:41:3411:5335:46
11:31
+0:03
20M
20.00 mi15:14:023:57:4611:5316:12
11:55
+0:24
21M
21.00 mi15:25:284:09:1211:5211:26
11:26
-0:29
35K
21.75 mi15:33:084:16:5211:497:40
10:15
-1:11
23M
23.00 mi15:45:084:28:5211:4112:00
9:35
-0:40
24M
24.00 mi15:54:444:38:2811:369:36
9:36
+0:01
40K
24.85 mi16:02:314:46:1511:317:47
9:06
-0:30
25.2M
25.20 mi16:05:584:49:4211:303:27
10:00
+0:54
Finish
26.22 mi16:14:124:57:5611:228:14
8:05
-1:55

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

8:05 /mi

Average Pace

11:22 /mi

Slowest Pace

12:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

48:44

16% of race

Time at Steady Pace

3:29:06

70% of race

Time at Slower Pace

40:06

13% of race

Average Pace: 11:22 /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 mi11:53:2537:0911:5737:09
11:57
#26418
10K
6.21 mi12:33:311:17:1512:2640:06
12:54
#26503
15K
9.32 mi13:10:231:54:0712:1536:52
11:52
#26403
20K
12.43 mi13:46:272:30:1112:0536:04
11:37
#26191
Half
13.11 mi13:54:162:38:0012:037:49
11:27
#26180
25K
15.53 mi14:22:043:05:4811:5827:48
11:28
#25972
30K
18.64 mi14:57:503:41:3411:5335:46
11:31
#25702
20M
20.00 mi15:14:023:57:4611:5316:12
11:55
#25618
21M
21.00 mi15:25:284:09:1211:5211:26
11:26
#25471
35K
21.75 mi15:33:084:16:5211:497:40
10:15
#25400
23M
23.00 mi15:45:084:28:5211:4112:00
9:35
#25200
24M
24.00 mi15:54:444:38:2811:369:36
9:36
#25082
40K
24.85 mi16:02:314:46:1511:317:47
9:06
#24932
25.2M
25.20 mi16:05:584:49:4211:303:27
10:00
#24871
Finish
26.22 mi16:14:124:57:5611:228:14
8:05
#24693
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi26418150911509125977(Top 98%)14929(Top 98%)14929(Top 282%)
10K6.21 mi3.10 mi26503-8515116-2515116-2526547(Top 100%)15136(Top 100%)15136(Top 286%)
15K9.32 mi3.11 mi26403+10015084+3215084+3225977(Top 98%)14929(Top 98%)14929(Top 282%)
20K12.43 mi3.11 mi26191+21215010+7415010+7425360(Top 95%)14646(Top 97%)14646(Top 277%)
Half13.11 mi0.68 mi26180+1115006+415006+425446(Top 96%)14665(Top 97%)14665(Top 277%)
25K15.53 mi2.42 mi25972+20814916+9014916+9024616(Top 92%)14302(Top 94%)14302(Top 271%)
30K18.64 mi3.11 mi25702+27014793+12314793+12323890(Top 90%)13912(Top 92%)13912(Top 263%)
20M20.00 mi1.36 mi25618+8414754+3914754+3924104(Top 91%)13950(Top 92%)13950(Top 264%)
21M21.00 mi1.00 mi25471+14714679+7514679+7521750(Top 82%)12879(Top 85%)12879(Top 244%)
35K21.75 mi0.75 mi25400+7114641+3814641+3821876(Top 82%)12879(Top 85%)12879(Top 244%)
23M23.00 mi1.25 mi25200+20014546+9514546+9518668(Top 70%)11431(Top 75%)11431(Top 216%)
24M24.00 mi1.00 mi25082+11814487+5914487+5919570(Top 74%)11808(Top 78%)11808(Top 223%)
40K24.85 mi0.85 mi24932+15014413+7414413+7416645(Top 63%)10428(Top 69%)10428(Top 197%)
25.2M25.20 mi0.35 mi24871+6114387+2614387+2617393(Top 65%)10746(Top 71%)10746(Top 203%)
Finish26.22 mi1.02 mi24693+17814306+8114306+8112649(Top 48%)8609(Top 57%)8609(Top 163%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 98%
×21story building
+97ft-345ft

Overall

25977

Males

14929

M18-39

14929

5K→10K

3.1 - 6.2 mi

Top 100%
×5story building
+79ft-138ft

Overall

26547

Males

15136

M18-39

15136

10K→15K

6.2 - 9.3 mi

Top 98%
×3story building
+67ft-78ft

Overall

25977

Males

14929

M18-39

14929

15K→20K

9.3 - 12.4 mi

Top 95%
×5story building
+106ft-86ft

Overall

25360

Males

14646

M18-39

14646

20K→Half

12.4 - 13.1 mi

Top 96%
×2story building
+19ft-37ft

Overall

25446

Males

14665

M18-39

14665

Half→25K

13.1 - 15.5 mi

Top 92%
×4story building
+66ft-88ft

Overall

24616

Males

14302

M18-39

14302

25K→30K

15.5 - 18.6 mi

Top 90%
×9story building
+181ft-148ft

Overall

23890

Males

13912

M18-39

13912

30K→20M

18.6 - 20.0 mi

Top 91%
×5story building
+64ft-50ft

Overall

24104

Males

13950

M18-39

13950

20M→21M

20.0 - 21.0 mi

Top 82%
×8story building
+106ft-24ft

Overall

21750

Males

12879

M18-39

12879

21M→35K

21.0 - 21.8 mi

Top 82%
×7story building
+17ft-86ft

Overall

21876

Males

12879

M18-39

12879

35K→23M

21.8 - 23.0 mi

Top 70%
×5story building
+23ft-63ft

Overall

18668

Males

11431

M18-39

11431

23M→24M

23.0 - 24.0 mi

Top 74%
×6story building
+12ft-82ft

Overall

19570

Males

11808

M18-39

11808

24M→40K

24.0 - 24.9 mi

Top 63%
×1story
+6ft-20ft

Overall

16645

Males

10428

M18-39

10428

40K→25.2M

24.9 - 25.2 mi

Top 65%
×1story
+13ft-16ft

Overall

17393

Males

10746

M18-39

10746

25.2M→Finish

25.2 - 26.2 mi

Top 48%
×2story building
+22ft-21ft

Overall

12649

Males

8609

M18-39

8609

Passing Analysis

Category:
Athletes Passed
1831
Passed By
106
Net Change
+1725
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26418
5K → 10K1398-85#26418#26503
10K → 15K1022+100#26503#26403
15K → 20K2131+212#26403#26191
20K → Half121+11#26191#26180
Half → 25K2091+208#26180#25972
25K → 30K2711+270#25972#25702
30K → 20M851+84#25702#25618
20M → 21M1470+147#25618#25471
21M → 35K710+71#25471#25400
35K → 23M2011+200#25400#25200
23M → 24M1180+118#25200#25082
24M → 40K1500+150#25082#24932
40K → 25.2M610+61#24932#24871
25.2M → Finish1780+178#24871#24693
TOTALS1831106+1725
📊

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