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BOSTON MARATHON 2023

Alfredo Korzenik

Bib: 16757•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 37%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 41%
Division (M55-59)
#0 / 1422
Top 23%
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
7:20/mi
22:48
↑ 97↓ 3451.5%
10K· 6.21 mi
7:14/mi
45:16
↑ 79↓ 1380.4%
15K· 9.32 mi
7:27/mi
1:08:24
↑ 67↓ 78
20K· 12.43 mi
7:35/mi
1:31:57
↑ 106↓ 860.1%
Half· 13.11 mi
7:33/mi
1:37:06
↑ 19↓ 370.5%
25K· 15.53 mi
7:47/mi
1:55:58
↑ 66↓ 880.2%
30K· 18.64 mi
8:05/mi
2:21:04
↑ 181↓ 1480.2%
20M
8:11/mi
2:32:11
↑ 64↓ 500.2%
21M
8:31/mi
2:40:42
↑ 106↓ 241.6%
35K· 21.75 mi
7:57/mi
2:46:39
↑ 17↓ 861.7%
23M
8:15/mi
2:56:59
↑ 23↓ 630.6%
24M
8:00/mi
3:04:59
↓ 821.3%
40K· 24.85 mi
8:07/mi
3:11:55
↓ 200.3%
25.2M
8:33/mi
3:14:52
↑ 13↓ 160.2%
Finish· 26.22 mi
7:39/mi
3:22:40
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:06
Pace7:24 /mi
2nd Half
Distance13.11 mi
Time1:45:34
Pace8:03 /mi
📊Positive Split: 8.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:12:5222:487:2022:48
7:20
-
10K
6.21 mi11:35:2045:167:1722:28
7:14
-0:06
15K
9.32 mi11:58:281:08:247:2023:08
7:27
+0:13
20K
12.43 mi12:22:011:31:577:2423:33
7:35
+0:08
Half
13.11 mi12:27:101:37:067:245:09
7:33
-0:02
25K
15.53 mi12:46:021:55:587:2818:52
7:47
+0:14
30K
18.64 mi13:11:082:21:047:3425:06
8:05
+0:18
20M
20.00 mi13:22:152:32:117:3711:07
8:11
+0:06
21M
21.00 mi13:30:462:40:427:398:31
8:31
+0:20
35K
21.75 mi13:36:432:46:397:405:57
7:57
-0:34
23M
23.00 mi13:47:032:56:597:4210:20
8:15
+0:18
24M
24.00 mi13:55:033:04:597:428:00
8:00
-0:15
40K
24.85 mi14:01:593:11:557:436:56
8:07
+0:07
25.2M
25.20 mi14:04:563:14:527:442:57
8:33
+0:26
Finish
26.22 mi14:12:443:22:407:447:48
7:39
-0:54

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

7:14 /mi

Average Pace

7:44 /mi

Slowest Pace

8:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:09:43

64% of race

Time at Steady Pace

1:10:00

35% of race

Time at Slower Pace

2:57

1% of race

Average Pace: 7:44 /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 mi11:12:5222:487:2022:48
7:20
#8373
10K
6.21 mi11:35:2045:167:1722:28
7:14
#8342
15K
9.32 mi11:58:281:08:247:2023:08
7:27
#8757
20K
12.43 mi12:22:011:31:577:2423:33
7:35
#8997
Half
13.11 mi12:27:101:37:067:245:09
7:33
#9069
25K
15.53 mi12:46:021:55:587:2818:52
7:47
#9351
30K
18.64 mi13:11:082:21:047:3425:06
8:05
#9718
20M
20.00 mi13:22:152:32:117:3711:07
8:11
#9809
21M
21.00 mi13:30:462:40:427:398:31
8:31
#9823
35K
21.75 mi13:36:432:46:397:405:57
7:57
#9902
23M
23.00 mi13:47:032:56:597:4210:20
8:15
#9959
24M
24.00 mi13:55:033:04:597:428:00
8:00
#10006
40K
24.85 mi14:01:593:11:557:436:56
8:07
#10007
25.2M
25.20 mi14:04:563:14:527:442:57
8:33
#9987
Finish
26.22 mi14:12:443:22:407:447:48
7:39
#9941
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi8373721772179726(Top 37%)7996(Top 53%)7996(Top 562%)
10K6.21 mi3.10 mi8342+317176+417176+418333(Top 31%)7165(Top 47%)7165(Top 504%)
15K9.32 mi3.11 mi8757-4157414-2387414-2389726(Top 37%)7996(Top 53%)7996(Top 562%)
20K12.43 mi3.11 mi8997-2407546-1327546-1329938(Top 37%)8037(Top 53%)8037(Top 565%)
Half13.11 mi0.68 mi9069-727588-427588-4210545(Top 40%)8367(Top 55%)8367(Top 588%)
25K15.53 mi2.42 mi9351-2827755-1677755-16710931(Top 41%)8465(Top 56%)8465(Top 595%)
30K18.64 mi3.11 mi9718-3677937-1827937-18211494(Top 43%)8578(Top 57%)8578(Top 603%)
20M20.00 mi1.36 mi9809-917964-277964-2711523(Top 43%)8486(Top 56%)8486(Top 597%)
21M21.00 mi1.00 mi9823-147948+167948+1610551(Top 40%)7884(Top 52%)7884(Top 554%)
35K21.75 mi0.75 mi9902-797971-237971-2311722(Top 44%)8422(Top 55%)8422(Top 592%)
23M23.00 mi1.25 mi9959-577979-87979-811523(Top 43%)8238(Top 54%)8238(Top 579%)
24M24.00 mi1.00 mi10006-477955+247955+2411209(Top 42%)7993(Top 53%)7993(Top 562%)
40K24.85 mi0.85 mi10007-17927+287927+2810734(Top 40%)7710(Top 51%)7710(Top 542%)
25.2M25.20 mi0.35 mi9987+207902+257902+259817(Top 37%)7203(Top 47%)7203(Top 507%)
Finish26.22 mi1.02 mi9941+467862+407862+409638(Top 36%)7089(Top 47%)7089(Top 499%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 37%
×21story building
+97ft-345ft

Overall

9726

Males

7996

M55-59

7996

5K→10K

3.1 - 6.2 mi

Top 31%
×5story building
+79ft-138ft

Overall

8333

Males

7165

M55-59

7165

10K→15K

6.2 - 9.3 mi

Top 37%
×3story building
+67ft-78ft

Overall

9726

Males

7996

M55-59

7996

15K→20K

9.3 - 12.4 mi

Top 37%
×5story building
+106ft-86ft

Overall

9938

Males

8037

M55-59

8037

20K→Half

12.4 - 13.1 mi

Top 40%
×2story building
+19ft-37ft

Overall

10545

Males

8367

M55-59

8367

Half→25K

13.1 - 15.5 mi

Top 41%
×4story building
+66ft-88ft

Overall

10931

Males

8465

M55-59

8465

25K→30K

15.5 - 18.6 mi

Top 43%
×9story building
+181ft-148ft

Overall

11494

Males

8578

M55-59

8578

30K→20M

18.6 - 20.0 mi

Top 43%
×5story building
+64ft-50ft

Overall

11523

Males

8486

M55-59

8486

20M→21M

20.0 - 21.0 mi

Top 40%
×8story building
+106ft-24ft

Overall

10551

Males

7884

M55-59

7884

21M→35K

21.0 - 21.8 mi

Top 44%
×7story building
+17ft-86ft

Overall

11722

Males

8422

M55-59

8422

35K→23M

21.8 - 23.0 mi

Top 43%
×5story building
+23ft-63ft

Overall

11523

Males

8238

M55-59

8238

23M→24M

23.0 - 24.0 mi

Top 42%
×6story building
+12ft-82ft

Overall

11209

Males

7993

M55-59

7993

24M→40K

24.0 - 24.9 mi

Top 40%
×1story
+6ft-20ft

Overall

10734

Males

7710

M55-59

7710

40K→25.2M

24.9 - 25.2 mi

Top 37%
×1story
+13ft-16ft

Overall

9817

Males

7203

M55-59

7203

25.2M→Finish

25.2 - 26.2 mi

Top 36%
×2story building
+22ft-21ft

Overall

9638

Males

7089

M55-59

7089

Passing Analysis

Category:
Athletes Passed
976*
Passed By
2542
Net Change
-1568
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8373
5K → 10K242211+31#8373#8342
10K → 15K44459-415#8342#8757
15K → 20K67307-240#8757#8997
20K → Half779-72#8997#9069
Half → 25K54336-282#9069#9351
25K → 30K77*444-367#9351#9718
30K → 20M58149-91#9718#9809
20M → 21M7892-14#9809#9823
21M → 35K23102-79#9823#9902
35K → 23M57114-57#9902#9959
23M → 24M61106-47#9959#10006
24M → 40K6465-1#10006#10007
40K → 25.2M40*20+20#10007#9987
25.2M → Finish104*58+46#9987#9941
TOTALS976*2542-1568

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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