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BOSTON MARATHON 2023

John Davidson

Bib: 10234•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M40-44)
#0 / 2241
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
7:12/mi
22:21
↑ 97↓ 3451.5%
10K· 6.21 mi
7:11/mi
44:40
↑ 79↓ 1380.4%
15K· 9.32 mi
7:18/mi
1:07:22
↑ 67↓ 78
20K· 12.43 mi
7:29/mi
1:30:37
↑ 106↓ 860.1%
Half· 13.11 mi
7:27/mi
1:35:42
↑ 19↓ 370.5%
25K· 15.53 mi
7:42/mi
1:54:22
↑ 66↓ 880.2%
30K· 18.64 mi
8:02/mi
2:19:19
↑ 181↓ 1480.2%
20M
8:15/mi
2:30:31
↑ 64↓ 500.2%
21M
10:29/mi
2:41:00
↑ 106↓ 241.6%
35K· 21.75 mi
8:57/mi
2:47:42
↑ 17↓ 861.7%
23M
11:15/mi
3:01:47
↑ 23↓ 630.6%
24M
9:46/mi
3:11:33
↓ 821.3%
40K· 24.85 mi
11:37/mi
3:21:29
↓ 200.3%
25.2M
12:22/mi
3:25:45
↑ 13↓ 160.2%
Finish· 26.22 mi
8:32/mi
3:34:27
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:42
Pace7:18 /mi
2nd Half
Distance13.11 mi
Time1:58:45
Pace9:04 /mi
📊Positive Split: 24.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:5022:217:1222:21
7:12
-
10K
6.21 mi11:11:0944:407:1122:19
7:11
-0:01
15K
9.32 mi11:33:511:07:227:1422:42
7:18
+0:07
20K
12.43 mi11:57:061:30:377:1823:15
7:29
+0:11
Half
13.11 mi12:02:111:35:427:185:05
7:27
-0:02
25K
15.53 mi12:20:511:54:227:2218:40
7:42
+0:15
30K
18.64 mi12:45:482:19:197:2824:57
8:02
+0:20
20M
20.00 mi12:57:002:30:317:3211:12
8:15
+0:13
21M
21.00 mi13:07:292:41:007:4010:29
10:29
+2:14
35K
21.75 mi13:14:112:47:427:436:42
8:57
-1:32
23M
23.00 mi13:28:163:01:477:5414:05
11:15
+2:18
24M
24.00 mi13:38:023:11:337:599:46
9:46
-1:29
40K
24.85 mi13:47:583:21:298:069:56
11:37
+1:51
25.2M
25.20 mi13:52:143:25:458:104:16
12:22
+0:45
Finish
26.22 mi14:00:563:34:278:118:42
8:32
-3:50

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

7:11 /mi

Average Pace

8:11 /mi

Slowest Pace

12:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:07:22

31% of race

Time at Steady Pace

1:38:33

46% of race

Time at Slower Pace

48:32

23% of race

Average Pace: 8:11 /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 mi10:48:5022:217:1222:21
7:12
#7459
10K
6.21 mi11:11:0944:407:1122:19
7:11
#7686
15K
9.32 mi11:33:511:07:227:1422:42
7:18
#7962
20K
12.43 mi11:57:061:30:377:1823:15
7:29
#8190
Half
13.11 mi12:02:111:35:427:185:05
7:27
#8258
25K
15.53 mi12:20:511:54:227:2218:40
7:42
#8531
30K
18.64 mi12:45:482:19:197:2824:57
8:02
#8956
20M
20.00 mi12:57:002:30:317:3211:12
8:15
#9155
21M
21.00 mi13:07:292:41:007:4010:29
10:29
#9954
35K
21.75 mi13:14:112:47:427:436:42
8:57
#10285
23M
23.00 mi13:28:163:01:477:5414:05
11:15
#11672
24M
24.00 mi13:38:023:11:337:599:46
9:46
#12250
40K
24.85 mi13:47:583:21:298:069:56
11:37
#13052
25.2M
25.20 mi13:52:143:25:458:104:16
12:22
#13366
Finish
26.22 mi14:00:563:34:278:118:42
8:32
#13484
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi7459662066208619(Top 32%)7328(Top 48%)7328(Top 327%)
10K6.21 mi3.10 mi7686-2276763-1436763-1437980(Top 30%)6927(Top 46%)6927(Top 309%)
15K9.32 mi3.11 mi7962-2766933-1706933-1708619(Top 32%)7328(Top 48%)7328(Top 327%)
20K12.43 mi3.11 mi8190-2287064-1317064-1319196(Top 35%)7625(Top 50%)7625(Top 340%)
Half13.11 mi0.68 mi8258-687104-407104-409832(Top 37%)8025(Top 53%)8025(Top 358%)
25K15.53 mi2.42 mi8531-2737249-1457249-14510288(Top 39%)8151(Top 54%)8151(Top 364%)
30K18.64 mi3.11 mi8956-4257480-2317480-23111148(Top 42%)8426(Top 56%)8426(Top 376%)
20M20.00 mi1.36 mi9155-1997575-957575-9511954(Top 45%)8694(Top 57%)8694(Top 388%)
21M21.00 mi1.00 mi9954-7998016-4418016-44119526(Top 73%)11839(Top 78%)11839(Top 528%)
35K21.75 mi0.75 mi10285-3318168-1528168-15217692(Top 66%)11000(Top 72%)11000(Top 491%)
23M23.00 mi1.25 mi11672-13878796-6288796-62822799(Top 86%)13288(Top 88%)13288(Top 593%)
24M24.00 mi1.00 mi12250-5789017-2219017-22120091(Top 75%)12040(Top 79%)12040(Top 537%)
40K24.85 mi0.85 mi13052-8029330-3139330-31323373(Top 88%)13483(Top 89%)13483(Top 602%)
25.2M25.20 mi0.35 mi13366-3149459-1299459-12923065(Top 87%)13335(Top 88%)13335(Top 595%)
Finish26.22 mi1.02 mi13484-1189482-239482-2315606(Top 59%)9992(Top 66%)9992(Top 446%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 32%
×21story building
+97ft-345ft

Overall

8619

Males

7328

M40-44

7328

5K→10K

3.1 - 6.2 mi

Top 30%
×5story building
+79ft-138ft

Overall

7980

Males

6927

M40-44

6927

10K→15K

6.2 - 9.3 mi

Top 32%
×3story building
+67ft-78ft

Overall

8619

Males

7328

M40-44

7328

15K→20K

9.3 - 12.4 mi

Top 35%
×5story building
+106ft-86ft

Overall

9196

Males

7625

M40-44

7625

20K→Half

12.4 - 13.1 mi

Top 37%
×2story building
+19ft-37ft

Overall

9832

Males

8025

M40-44

8025

Half→25K

13.1 - 15.5 mi

Top 39%
×4story building
+66ft-88ft

Overall

10288

Males

8151

M40-44

8151

25K→30K

15.5 - 18.6 mi

Top 42%
×9story building
+181ft-148ft

Overall

11148

Males

8426

M40-44

8426

30K→20M

18.6 - 20.0 mi

Top 45%
×5story building
+64ft-50ft

Overall

11954

Males

8694

M40-44

8694

20M→21M

20.0 - 21.0 mi

Top 73%
×8story building
+106ft-24ft

Overall

19526

Males

11839

M40-44

11839

21M→35K

21.0 - 21.8 mi

Top 66%
×7story building
+17ft-86ft

Overall

17692

Males

11000

M40-44

11000

35K→23M

21.8 - 23.0 mi

Top 86%
×5story building
+23ft-63ft

Overall

22799

Males

13288

M40-44

13288

23M→24M

23.0 - 24.0 mi

Top 75%
×6story building
+12ft-82ft

Overall

20091

Males

12040

M40-44

12040

24M→40K

24.0 - 24.9 mi

Top 88%
×1story
+6ft-20ft

Overall

23373

Males

13483

M40-44

13483

40K→25.2M

24.9 - 25.2 mi

Top 87%
×1story
+13ft-16ft

Overall

23065

Males

13335

M40-44

13335

25.2M→Finish

25.2 - 26.2 mi

Top 59%
×2story building
+22ft-21ft

Overall

15606

Males

9992

M40-44

9992

Passing Analysis

Category:
Athletes Passed
479
Passed By
6501
Net Change
-6025
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7459
5K → 10K130357-227#7459#7686
10K → 15K53329-276#7686#7962
15K → 20K65293-228#7962#8190
20K → Half775-68#8190#8258
Half → 25K46319-273#8258#8531
25K → 30K72497-425#8531#8956
30K → 20M36235-199#8956#9155
20M → 21M8806-799#9155#9954
21M → 35K7336-331#9954#10285
35K → 23M41391-1387#10285#11672
23M → 24M5583-578#11672#12250
24M → 40K3805-802#12250#13052
40K → 25.2M4318-314#13052#13366
25.2M → Finish39157-118#13366#13484
TOTALS4796501-6025
📊

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