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BOSTON MARATHON 2023

Craig Zebrowski

Bib: 25070•M

CO

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
9:51/mi
30:37
↑ 97↓ 3451.5%
10K· 6.21 mi
9:41/mi
1:00:41
↑ 79↓ 1380.4%
15K· 9.32 mi
9:29/mi
1:30:09
↑ 67↓ 78
20K· 12.43 mi
9:52/mi
2:00:47
↑ 106↓ 860.1%
Half· 13.11 mi
9:23/mi
2:07:11
↑ 19↓ 370.5%
25K· 15.53 mi
9:39/mi
2:30:34
↑ 66↓ 880.2%
30K· 18.64 mi
9:57/mi
3:01:29
↑ 181↓ 1480.2%
20M
10:16/mi
3:15:26
↑ 64↓ 500.2%
21M
9:58/mi
3:25:24
↑ 106↓ 241.6%
35K· 21.75 mi
9:35/mi
3:32:34
↑ 17↓ 861.7%
23M
9:57/mi
3:45:02
↑ 23↓ 630.6%
24M
9:12/mi
3:54:14
↓ 821.3%
40K· 24.85 mi
8:45/mi
4:01:43
↓ 200.3%
25.2M
9:37/mi
4:05:02
↑ 13↓ 160.2%
Finish· 26.22 mi
8:53/mi
4:14:05
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time2:07:11
Pace9:42 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time2:06:54
Pace9:41 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:0830:379:5130:37
9:51
-
10K
6.21 mi12:16:121:00:419:4630:04
9:41
-0:10
15K
9.32 mi12:45:401:30:099:4029:28
9:29
-0:12
20K
12.43 mi13:16:182:00:479:4330:38
9:52
+0:23
Half
13.11 mi13:22:422:07:119:426:24
9:23
-0:29
25K
15.53 mi13:46:052:30:349:4223:23
9:39
+0:16
30K
18.64 mi14:17:003:01:299:4430:55
9:57
+0:18
20M
20.00 mi14:30:573:15:269:4613:57
10:16
+0:19
21M
21.00 mi14:40:553:25:249:479:58
9:58
-0:18
35K
21.75 mi14:48:053:32:349:467:10
9:35
-0:23
23M
23.00 mi15:00:333:45:029:4712:28
9:57
+0:22
24M
24.00 mi15:09:453:54:149:469:12
9:12
-0:45
40K
24.85 mi15:17:144:01:439:447:29
8:45
-0:27
25.2M
25.20 mi15:20:334:05:029:433:19
9:37
+0:52
Finish
26.22 mi15:29:364:14:059:429:03
8:53
-0:44

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

8:45 /mi

Average Pace

9:42 /mi

Slowest Pace

10:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:12:05

28% of race

Time at Steady Pace

3:02:00

72% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:41 /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 mi11:46:0830:379:5130:37
9:51
#23060
10K
6.21 mi12:16:121:00:419:4630:04
9:41
#23082
15K
9.32 mi12:45:401:30:099:4029:28
9:29
#22787
20K
12.43 mi13:16:182:00:479:4330:38
9:52
#22721
Half
13.11 mi13:22:422:07:119:426:24
9:23
#22683
25K
15.53 mi13:46:052:30:349:4223:23
9:39
#22451
30K
18.64 mi14:17:003:01:299:4430:55
9:57
#22175
20M
20.00 mi14:30:573:15:269:4613:57
10:16
#22083
21M
21.00 mi14:40:553:25:249:479:58
9:58
#21877
35K
21.75 mi14:48:053:32:349:467:10
9:35
#21827
23M
23.00 mi15:00:333:45:029:4712:28
9:57
#21696
24M
24.00 mi15:09:453:54:149:469:12
9:12
#21555
40K
24.85 mi15:17:144:01:439:447:29
8:45
#21359
25.2M
25.20 mi15:20:334:05:029:433:19
9:37
#21276
Finish
26.22 mi15:29:364:14:059:429:03
8:53
#21165
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi23060136121361222209(Top 83%)13276(Top 87%)13276(Top 251%)
10K6.21 mi3.10 mi23082-2213652-4013652-4022993(Top 86%)13642(Top 90%)13642(Top 258%)
15K9.32 mi3.11 mi22787+29513538+11413538+11422209(Top 83%)13276(Top 87%)13276(Top 251%)
20K12.43 mi3.11 mi22721+6613503+3513503+3522542(Top 85%)13415(Top 88%)13415(Top 254%)
Half13.11 mi0.68 mi22683+3813476+2713476+2721742(Top 82%)13063(Top 86%)13063(Top 247%)
25K15.53 mi2.42 mi22451+23213351+12513351+12521272(Top 80%)12827(Top 85%)12827(Top 243%)
30K18.64 mi3.11 mi22175+27613220+13113220+13120889(Top 78%)12586(Top 83%)12586(Top 238%)
20M20.00 mi1.36 mi22083+9213169+5113169+5121167(Top 80%)12643(Top 83%)12643(Top 239%)
21M21.00 mi1.00 mi21877+20613071+9813071+9817910(Top 67%)11190(Top 74%)11190(Top 212%)
35K21.75 mi0.75 mi21827+5013036+3513036+3520083(Top 75%)12084(Top 80%)12084(Top 229%)
23M23.00 mi1.25 mi21696+13112962+7412962+7419857(Top 75%)11957(Top 79%)11957(Top 226%)
24M24.00 mi1.00 mi21555+14112890+7212890+7218058(Top 68%)11109(Top 73%)11109(Top 210%)
40K24.85 mi0.85 mi21359+19612790+10012790+10014821(Top 56%)9620(Top 63%)9620(Top 182%)
25.2M25.20 mi0.35 mi21276+8312750+4012750+4015736(Top 59%)10024(Top 66%)10024(Top 190%)
Finish26.22 mi1.02 mi21165+11112683+6712683+6717410(Top 65%)10802(Top 71%)10802(Top 204%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 83%
×21story building
+97ft-345ft

Overall

22209

Males

13276

M18-39

13276

5K→10K

3.1 - 6.2 mi

Top 86%
×5story building
+79ft-138ft

Overall

22993

Males

13642

M18-39

13642

10K→15K

6.2 - 9.3 mi

Top 83%
×3story building
+67ft-78ft

Overall

22209

Males

13276

M18-39

13276

15K→20K

9.3 - 12.4 mi

Top 85%
×5story building
+106ft-86ft

Overall

22542

Males

13415

M18-39

13415

20K→Half

12.4 - 13.1 mi

Top 82%
×2story building
+19ft-37ft

Overall

21742

Males

13063

M18-39

13063

Half→25K

13.1 - 15.5 mi

Top 80%
×4story building
+66ft-88ft

Overall

21272

Males

12827

M18-39

12827

25K→30K

15.5 - 18.6 mi

Top 78%
×9story building
+181ft-148ft

Overall

20889

Males

12586

M18-39

12586

30K→20M

18.6 - 20.0 mi

Top 80%
×5story building
+64ft-50ft

Overall

21167

Males

12643

M18-39

12643

20M→21M

20.0 - 21.0 mi

Top 67%
×8story building
+106ft-24ft

Overall

17910

Males

11190

M18-39

11190

21M→35K

21.0 - 21.8 mi

Top 75%
×7story building
+17ft-86ft

Overall

20083

Males

12084

M18-39

12084

35K→23M

21.8 - 23.0 mi

Top 75%
×5story building
+23ft-63ft

Overall

19857

Males

11957

M18-39

11957

23M→24M

23.0 - 24.0 mi

Top 68%
×6story building
+12ft-82ft

Overall

18058

Males

11109

M18-39

11109

24M→40K

24.0 - 24.9 mi

Top 56%
×1story
+6ft-20ft

Overall

14821

Males

9620

M18-39

9620

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1story
+13ft-16ft

Overall

15736

Males

10024

M18-39

10024

25.2M→Finish

25.2 - 26.2 mi

Top 65%
×2story building
+22ft-21ft

Overall

17410

Males

10802

M18-39

10802

Passing Analysis

Category:
Athletes Passed
2357
Passed By
462
Net Change
+1895
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23060
5K → 10K209231-22#23060#23082
10K → 15K34146+295#23082#22787
15K → 20K167101+66#22787#22721
20K → Half435+38#22721#22683
Half → 25K2419+232#22683#22451
25K → 30K29519+276#22451#22175
30K → 20M11927+92#22175#22083
20M → 21M2071+206#22083#21877
21M → 35K566+50#21877#21827
35K → 23M14312+131#21827#21696
23M → 24M1421+141#21696#21555
24M → 40K1993+196#21555#21359
40K → 25.2M830+83#21359#21276
25.2M → Finish1121+111#21276#21165
TOTALS2357462+1895
📊

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