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BOSTON MARATHON 2023

Michael Ambrose

Bib: 1312•M

UT

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 4%
Gender (Male)
#0 / 15176
Top 6%
Division (M18-39)
#0 / 5285
Top 15%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:58
Rank: #908
Start → 5K
6:06/mi
18:58 split
10K· 6.21 mi
37:26
Rank: #790 (+118)
5K → 10K
5:57/mi
18:28 split
15K· 9.32 mi
56:08
Rank: #766 (+24)
10K → 15K
6:01/mi
18:42 split
20K· 12.43 mi
1:14:58
Rank: #735 (+31)
15K → 20K
6:04/mi
18:50 split
Half· 13.11 mi
1:19:07
Rank: #739 (-4)
20K → Half
6:05/mi
4:09 split
25K· 15.53 mi
1:34:14
Rank: #763 (-24)
Half → 25K
6:14/mi
15:07 split
30K· 18.64 mi
1:54:16
Rank: #844 (-81)
25K → 30K
6:27/mi
20:02 split
20M
2:03:05
Rank: #869 (-25)
30K → 20M
6:29/mi
8:49 split
21M
2:09:53
Rank: #877 (-8)
20M → 21M
6:48/mi
6:48 split
35K· 21.75 mi
2:14:32
Rank: #878 (-1)
21M → 35K
6:13/mi
4:39 split
23M
2:22:51
Rank: #905 (-27)
35K → 23M
6:39/mi
8:19 split
24M
2:29:24
Rank: #922 (-17)
23M → 24M
6:33/mi
6:33 split
40K· 24.85 mi
2:35:14
Rank: #962 (-40)
24M → 40K
6:49/mi
5:50 split
25.2M
2:37:45
Rank: #972 (-10)
40K → 25.2M
7:18/mi
2:31 split
Finish· 26.22 mi
2:44:25
Rank: #1009 (-37)
25.2M → Finish
6:33/mi
6:40 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:19:07
Pace6:02 /mi
2nd Half
Distance13.11 mi
Time1:25:18
Pace6:30 /mi
📊Positive Split: 7.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:3218:586:0618:58
6:06
-
10K
6.21 mi10:38:0037:266:0118:28
5:57
-0:09
15K
9.32 mi10:56:4256:086:0118:42
6:01
+0:04
20K
12.43 mi11:15:321:14:586:0218:50
6:04
+0:03
Half
13.11 mi11:19:411:19:076:024:09
6:05
+0:01
25K
15.53 mi11:34:481:34:146:0415:07
6:14
+0:09
30K
18.64 mi11:54:501:54:166:0820:02
6:27
+0:13
20M
20.00 mi12:03:392:03:056:098:49
6:29
+0:02
21M
21.00 mi12:10:272:09:536:116:48
6:48
+0:19
35K
21.75 mi12:15:062:14:326:114:39
6:13
-0:35
23M
23.00 mi12:23:252:22:516:138:19
6:39
+0:26
24M
24.00 mi12:29:582:29:246:146:33
6:33
-0:06
40K
24.85 mi12:35:482:35:146:155:50
6:49
+0:16
25.2M
25.20 mi12:38:192:37:456:162:31
7:18
+0:29
Finish
26.22 mi12:44:592:44:256:176:40
6:33
-0:45

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

5:57 /mi

Average Pace

6:17 /mi

Slowest Pace

7:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:38:53

60% of race

Time at Steady Pace

42:04

26% of race

Time at Slower Pace

23:28

14% of race

Average Pace: 6:16 /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 mi10:19:3218:586:0618:58
6:06
#908
10K
6.21 mi10:38:0037:266:0118:28
5:57
#790
15K
9.32 mi10:56:4256:086:0118:42
6:01
#766
20K
12.43 mi11:15:321:14:586:0218:50
6:04
#735
Half
13.11 mi11:19:411:19:076:024:09
6:05
#739
25K
15.53 mi11:34:481:34:146:0415:07
6:14
#763
30K
18.64 mi11:54:501:54:166:0820:02
6:27
#844
20M
20.00 mi12:03:392:03:056:098:49
6:29
#869
21M
21.00 mi12:10:272:09:536:116:48
6:48
#877
35K
21.75 mi12:15:062:14:326:114:39
6:13
#878
23M
23.00 mi12:23:252:22:516:138:19
6:39
#905
24M
24.00 mi12:29:582:29:246:146:33
6:33
#922
40K
24.85 mi12:35:482:35:146:155:50
6:49
#962
25.2M
25.20 mi12:38:192:37:456:162:31
7:18
#972
Finish
26.22 mi12:44:592:44:256:176:40
6:33
#1009
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi908854854753(Top 3%)709(Top 5%)709(Top 13%)
10K6.21 mi3.10 mi790+118745+109745+109687(Top 3%)643(Top 4%)643(Top 12%)
15K9.32 mi3.11 mi766+24722+23722+23753(Top 3%)709(Top 5%)709(Top 13%)
20K12.43 mi3.11 mi735+31692+30692+30694(Top 3%)652(Top 4%)652(Top 12%)
Half13.11 mi0.68 mi739-4696-4696-4968(Top 4%)922(Top 6%)922(Top 17%)
25K15.53 mi2.42 mi763-24719-23719-231088(Top 4%)1036(Top 7%)1036(Top 20%)
30K18.64 mi3.11 mi844-81800-81800-811361(Top 5%)1303(Top 9%)1303(Top 25%)
20M20.00 mi1.36 mi869-25822-22822-221383(Top 5%)1318(Top 9%)1318(Top 25%)
21M21.00 mi1.00 mi877-8831-9831-91387(Top 5%)1321(Top 9%)1321(Top 25%)
35K21.75 mi0.75 mi878-1832-1832-11277(Top 5%)1214(Top 8%)1214(Top 23%)
23M23.00 mi1.25 mi905-27858-26858-261913(Top 7%)1814(Top 12%)1814(Top 34%)
24M24.00 mi1.00 mi922-17875-17875-172277(Top 9%)2128(Top 14%)2128(Top 40%)
40K24.85 mi0.85 mi962-40913-38913-382897(Top 11%)2664(Top 18%)2664(Top 50%)
25.2M25.20 mi0.35 mi972-10923-10923-102838(Top 11%)2593(Top 17%)2593(Top 49%)
Finish26.22 mi1.02 mi1009-37960-37960-372659(Top 10%)2431(Top 16%)2431(Top 46%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 3%
×21story building
+97ft-345ft

Overall

753

Males

709

M18-39

709

5K→10K

3.1 - 6.2 mi

Top 3%
×5story building
+79ft-138ft

Overall

687

Males

643

M18-39

643

10K→15K

6.2 - 9.3 mi

Top 3%
×3story building
+67ft-78ft

Overall

753

Males

709

M18-39

709

15K→20K

9.3 - 12.4 mi

Top 3%
×5story building
+106ft-86ft

Overall

694

Males

652

M18-39

652

20K→Half

12.4 - 13.1 mi

Top 4%
×2story building
+19ft-37ft

Overall

968

Males

922

M18-39

922

Half→25K

13.1 - 15.5 mi

Top 4%
×4story building
+66ft-88ft

Overall

1088

Males

1036

M18-39

1036

25K→30K

15.5 - 18.6 mi

Top 5%
×9story building
+181ft-148ft

Overall

1361

Males

1303

M18-39

1303

30K→20M

18.6 - 20.0 mi

Top 5%
×5story building
+64ft-50ft

Overall

1383

Males

1318

M18-39

1318

20M→21M

20.0 - 21.0 mi

Top 5%
×8story building
+106ft-24ft

Overall

1387

Males

1321

M18-39

1321

21M→35K

21.0 - 21.8 mi

Top 5%
×7story building
+17ft-86ft

Overall

1277

Males

1214

M18-39

1214

35K→23M

21.8 - 23.0 mi

Top 7%
×5story building
+23ft-63ft

Overall

1913

Males

1814

M18-39

1814

23M→24M

23.0 - 24.0 mi

Top 9%
×6story building
+12ft-82ft

Overall

2277

Males

2128

M18-39

2128

24M→40K

24.0 - 24.9 mi

Top 11%
×1story
+6ft-20ft

Overall

2897

Males

2664

M18-39

2664

40K→25.2M

24.9 - 25.2 mi

Top 11%
×1story
+13ft-16ft

Overall

2838

Males

2593

M18-39

2593

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2story building
+22ft-21ft

Overall

2659

Males

2431

M18-39

2431

Passing Analysis

Category:
Athletes Passed
286
Passed By
387
Net Change
-101
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#908
5K → 10K1279+118#908#790
10K → 15K328+24#790#766
15K → 20K387+31#766#735
20K → Half26-4#735#739
Half → 25K1943-24#739#763
25K → 30K990-81#763#844
30K → 20M631-25#844#869
20M → 21M1523-8#869#877
21M → 35K910-1#877#878
35K → 23M835-27#878#905
23M → 24M825-17#905#922
24M → 40K343-40#922#962
40K → 25.2M212-10#962#972
25.2M → Finish845-37#972#1009
TOTALS286387-101
📊

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