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BOSTON MARATHON 2023

John (jp) Migliarini

Bib: 8839•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 9%
Gender (Male)
#0 / 15176
Top 15%
Masters (Masters Men)
#0 / 9891
Top 5%
Division (M40-44)
#0 / 2241
Top 14%
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
6:55/mi
21:28
↑ 97↓ 3451.5%
10K· 6.21 mi
6:41/mi
42:13
↑ 79↓ 1380.4%
15K· 9.32 mi
6:39/mi
1:02:52
↑ 67↓ 78
20K· 12.43 mi
6:43/mi
1:23:43
↑ 106↓ 860.1%
Half· 13.11 mi
6:34/mi
1:28:12
↑ 19↓ 370.5%
25K· 15.53 mi
6:38/mi
1:44:18
↑ 66↓ 880.2%
30K· 18.64 mi
6:45/mi
2:05:16
↑ 181↓ 1480.2%
20M
6:34/mi
2:14:12
↑ 64↓ 500.2%
21M
7:01/mi
2:21:13
↑ 106↓ 241.6%
35K· 21.75 mi
6:04/mi
2:25:45
↑ 17↓ 861.7%
23M
6:07/mi
2:33:25
↑ 23↓ 630.6%
24M
6:03/mi
2:39:28
↓ 821.3%
40K· 24.85 mi
6:14/mi
2:44:48
↓ 200.3%
25.2M
6:37/mi
2:47:05
↑ 13↓ 160.2%
Finish· 26.22 mi
6:06/mi
2:53:18
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:28:12
Pace6:44 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:25:06
Pace6:30 /mi
📊Negative Split: 3.5% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:3821:286:5521:28
6:55
-
10K
6.21 mi11:07:2342:136:4820:45
6:41
-0:14
15K
9.32 mi11:28:021:02:526:4520:39
6:39
-0:02
20K
12.43 mi11:48:531:23:436:4420:51
6:43
+0:04
Half
13.11 mi11:53:221:28:126:444:29
6:34
-0:09
25K
15.53 mi12:09:281:44:186:4316:06
6:38
+0:04
30K
18.64 mi12:30:262:05:166:4320:58
6:45
+0:07
20M
20.00 mi12:39:222:14:126:438:56
6:34
-0:11
21M
21.00 mi12:46:232:21:136:437:01
7:01
+0:27
35K
21.75 mi12:50:552:25:456:424:32
6:04
-0:57
23M
23.00 mi12:58:352:33:256:407:40
6:07
+0:03
24M
24.00 mi13:04:382:39:286:396:03
6:03
-0:04
40K
24.85 mi13:09:582:44:486:385:20
6:14
+0:11
25.2M
25.20 mi13:12:152:47:056:382:17
6:37
+0:23
Finish
26.22 mi13:18:282:53:186:376:13
6:06
-0:31

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

6:03 /mi

Average Pace

6:37 /mi

Slowest Pace

7:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:22:15

47% of race

Time at Steady Pace

1:31:03

53% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:37 /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 mi10:46:3821:286:5521:28
6:55
#5615
10K
6.21 mi11:07:2342:136:4820:45
6:41
#4908
15K
9.32 mi11:28:021:02:526:4520:39
6:39
#4451
20K
12.43 mi11:48:531:23:436:4420:51
6:43
#4213
Half
13.11 mi11:53:221:28:126:444:29
6:34
#4158
25K
15.53 mi12:09:281:44:186:4316:06
6:38
#3894
30K
18.64 mi12:30:262:05:166:4320:58
6:45
#3609
20M
20.00 mi12:39:222:14:126:438:56
6:34
#3361
21M
21.00 mi12:46:232:21:136:437:01
7:01
#3259
35K
21.75 mi12:50:552:25:456:424:32
6:04
#3102
23M
23.00 mi12:58:352:33:256:407:40
6:07
#2787
24M
24.00 mi13:04:382:39:286:396:03
6:03
#2594
40K
24.85 mi13:09:582:44:486:385:20
6:14
#2467
25.2M
25.20 mi13:12:152:47:056:382:17
6:37
#2417
Finish
26.22 mi13:18:282:53:186:376:13
6:06
#2327
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi5615516751673651(Top 14%)3442(Top 23%)3442(Top 154%)
10K6.21 mi3.10 mi4908+7074553+6144553+6144116(Top 15%)3860(Top 25%)3860(Top 172%)
15K9.32 mi3.11 mi4451+4574161+3924161+3923651(Top 14%)3442(Top 23%)3442(Top 154%)
20K12.43 mi3.11 mi4213+2383949+2123949+2123645(Top 14%)3449(Top 23%)3449(Top 154%)
Half13.11 mi0.68 mi4158+553902+473902+473169(Top 12%)3019(Top 20%)3019(Top 135%)
25K15.53 mi2.42 mi3894+2643668+2343668+2342934(Top 11%)2801(Top 18%)2801(Top 125%)
30K18.64 mi3.11 mi3609+2853413+2553413+2552670(Top 10%)2534(Top 17%)2534(Top 113%)
20M20.00 mi1.36 mi3361+2483183+2303183+2301754(Top 7%)1674(Top 11%)1674(Top 75%)
21M21.00 mi1.00 mi3259+1023088+953088+952208(Top 8%)2086(Top 14%)2086(Top 93%)
35K21.75 mi0.75 mi3102+1572945+1432945+143845(Top 3%)802(Top 5%)802(Top 36%)
23M23.00 mi1.25 mi2787+3152659+2862659+286502(Top 2%)471(Top 3%)471(Top 21%)
24M24.00 mi1.00 mi2594+1932479+1802479+180666(Top 3%)631(Top 4%)631(Top 28%)
40K24.85 mi0.85 mi2467+1272357+1222357+122755(Top 3%)716(Top 5%)716(Top 32%)
25.2M25.20 mi0.35 mi2417+502310+472310+47747(Top 3%)712(Top 5%)712(Top 32%)
Finish26.22 mi1.02 mi2327+902227+832227+83995(Top 4%)949(Top 6%)949(Top 42%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 14%
×21story building
+97ft-345ft

Overall

3651

Males

3442

M40-44

3442

5K→10K

3.1 - 6.2 mi

Top 15%
×5story building
+79ft-138ft

Overall

4116

Males

3860

M40-44

3860

10K→15K

6.2 - 9.3 mi

Top 14%
×3story building
+67ft-78ft

Overall

3651

Males

3442

M40-44

3442

15K→20K

9.3 - 12.4 mi

Top 14%
×5story building
+106ft-86ft

Overall

3645

Males

3449

M40-44

3449

20K→Half

12.4 - 13.1 mi

Top 12%
×2story building
+19ft-37ft

Overall

3169

Males

3019

M40-44

3019

Half→25K

13.1 - 15.5 mi

Top 11%
×4story building
+66ft-88ft

Overall

2934

Males

2801

M40-44

2801

25K→30K

15.5 - 18.6 mi

Top 10%
×9story building
+181ft-148ft

Overall

2670

Males

2534

M40-44

2534

30K→20M

18.6 - 20.0 mi

Top 7%
×5story building
+64ft-50ft

Overall

1754

Males

1674

M40-44

1674

20M→21M

20.0 - 21.0 mi

Top 8%
×8story building
+106ft-24ft

Overall

2208

Males

2086

M40-44

2086

21M→35K

21.0 - 21.8 mi

Top 3%
×7story building
+17ft-86ft

Overall

845

Males

802

M40-44

802

35K→23M

21.8 - 23.0 mi

Top 2%
×5story building
+23ft-63ft

Overall

502

Males

471

M40-44

471

23M→24M

23.0 - 24.0 mi

Top 3%
×6story building
+12ft-82ft

Overall

666

Males

631

M40-44

631

24M→40K

24.0 - 24.9 mi

Top 3%
×1story
+6ft-20ft

Overall

755

Males

716

M40-44

716

40K→25.2M

24.9 - 25.2 mi

Top 3%
×1story
+13ft-16ft

Overall

747

Males

712

M40-44

712

25.2M→Finish

25.2 - 26.2 mi

Top 4%
×2story building
+22ft-21ft

Overall

995

Males

949

M40-44

949

Passing Analysis

Category:
Athletes Passed
3366
Passed By
78
Net Change
+3288
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5615
5K → 10K73023+707#5615#4908
10K → 15K4669+457#4908#4451
15K → 20K25113+238#4451#4213
20K → Half594+55#4213#4158
Half → 25K2695+264#4158#3894
25K → 30K29914+285#3894#3609
30K → 20M2491+248#3609#3361
20M → 21M1097+102#3361#3259
21M → 35K1570+157#3259#3102
35K → 23M3150+315#3102#2787
23M → 24M1930+193#2787#2594
24M → 40K1270+127#2594#2467
40K → 25.2M500+50#2467#2417
25.2M → Finish922+90#2417#2327
TOTALS336678+3288
📊

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