Boston Marathon logo
BOSTON MARATHON 2023

Andrew Zgrabik

Bib: 5748•M

OH

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 17%
Gender (Male)
#0 / 15176
Top 27%
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:40
Rank: #3253
Start → 5K
20:40 | 6:39/mi
10K· 6.21 mi
41:28
Rank: #3730 (-477)
5K → 10K
20:48 | 6:42/mi
15K· 9.32 mi
1:02:19
Rank: #3875 (-145)
10K → 15K
20:51 | 6:43/mi
20K· 12.43 mi
1:23:39
Rank: #4177 (-302)
15K → 20K
21:20 | 6:52/mi
Half· 13.11 mi
1:28:12
Rank: #4164 (+13)
20K → Half
4:33 | 6:40/mi
25K· 15.53 mi
1:45:02
Rank: #4341 (-177)
Half → 25K
16:50 | 6:57/mi
30K· 18.64 mi
2:06:39
Rank: #4264 (+77)
25K → 30K
21:37 | 6:57/mi
20M
2:15:55
Rank: #4114 (+150)
30K → 20M
9:16 | 6:49/mi
21M
2:23:30
Rank: #4167 (-53)
20M → 21M
7:35 | 7:35/mi
35K· 21.75 mi
2:28:38
Rank: #4176 (-9)
21M → 35K
5:08 | 6:52/mi
23M
2:37:56
Rank: #4327 (-151)
35K → 23M
9:18 | 7:26/mi
24M
2:45:10
Rank: #4434 (-107)
23M → 24M
7:14 | 7:14/mi
40K· 24.85 mi
2:51:28
Rank: #4467 (-33)
24M → 40K
6:18 | 7:22/mi
25.2M
2:54:15
Rank: #4499 (-32)
40K → 25.2M
2:47 | 8:04/mi
Finish· 26.22 mi
3:01:16
Rank: #4473 (+26)
25.2M → Finish
7:01 | 6:53/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:12
Pace6:44 /mi
2nd Half
Distance13.11 mi
Time1:33:04
Pace7:06 /mi
📊Positive Split: 5.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:0720:406:3920:40
6:39
-
10K
6.21 mi10:43:5541:286:4020:48
6:42
+0:03
15K
9.32 mi11:04:461:02:196:4120:51
6:43
+0:01
20K
12.43 mi11:26:061:23:396:4421:20
6:52
+0:09
Half
13.11 mi11:30:391:28:126:444:33
6:40
-0:12
25K
15.53 mi11:47:291:45:026:4616:50
6:57
+0:17
30K
18.64 mi12:09:062:06:396:4821:37
6:57
0:00
20M
20.00 mi12:18:222:15:556:489:16
6:49
-0:08
21M
21.00 mi12:25:572:23:306:507:35
7:35
+0:46
35K
21.75 mi12:31:052:28:386:505:08
6:52
-0:43
23M
23.00 mi12:40:232:37:566:529:18
7:26
+0:34
24M
24.00 mi12:47:372:45:106:537:14
7:14
-0:12
40K
24.85 mi12:53:552:51:286:546:18
7:22
+0:08
25.2M
25.20 mi12:56:422:54:156:552:47
8:04
+0:42
Finish
26.22 mi13:03:433:01:166:557:01
6:53
-1:11

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

6:39 /mi

Average Pace

6:55 /mi

Slowest Pace

8:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

25:13

14% of race

Time at Steady Pace

2:02:51

68% of race

Time at Slower Pace

33:12

18% of race

Average Pace: 6:55 /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 mi10:23:0720:406:3920:40
6:39
#3253
10K
6.21 mi10:43:5541:286:4020:48
6:42
#3730
15K
9.32 mi11:04:461:02:196:4120:51
6:43
#3875
20K
12.43 mi11:26:061:23:396:4421:20
6:52
#4177
Half
13.11 mi11:30:391:28:126:444:33
6:40
#4164
25K
15.53 mi11:47:291:45:026:4616:50
6:57
#4341
30K
18.64 mi12:09:062:06:396:4821:37
6:57
#4264
20M
20.00 mi12:18:222:15:556:489:16
6:49
#4114
21M
21.00 mi12:25:572:23:306:507:35
7:35
#4167
35K
21.75 mi12:31:052:28:386:505:08
6:52
#4176
23M
23.00 mi12:40:232:37:566:529:18
7:26
#4327
24M
24.00 mi12:47:372:45:106:537:14
7:14
#4434
40K
24.85 mi12:53:552:51:286:546:18
7:22
#4467
25.2M
25.20 mi12:56:422:54:156:552:47
8:04
#4499
Finish
26.22 mi13:03:433:01:166:557:01
6:53
#4473
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3253307230724236(Top 16%)3973(Top 26%)3973(Top 75%)
10K6.21 mi3.10 mi3730-4773519-4473519-4474288(Top 16%)4016(Top 26%)4016(Top 76%)
15K9.32 mi3.11 mi3875-1453652-1333652-1334236(Top 16%)3973(Top 26%)3973(Top 75%)
20K12.43 mi3.11 mi4177-3023919-2673919-2675055(Top 19%)4678(Top 31%)4678(Top 89%)
Half13.11 mi0.68 mi4164+133908+113908+114069(Top 15%)3821(Top 25%)3821(Top 72%)
25K15.53 mi2.42 mi4341-1774068-1604068-1605226(Top 20%)4818(Top 32%)4818(Top 91%)
30K18.64 mi3.11 mi4264+774000+684000+684070(Top 15%)3800(Top 25%)3800(Top 72%)
20M20.00 mi1.36 mi4114+1503864+1363864+1362964(Top 11%)2789(Top 18%)2789(Top 53%)
21M21.00 mi1.00 mi4167-533904-403904-404979(Top 19%)4457(Top 29%)4457(Top 84%)
35K21.75 mi0.75 mi4176-93909-53909-54560(Top 17%)4151(Top 27%)4151(Top 79%)
23M23.00 mi1.25 mi4327-1514048-1394048-1395996(Top 23%)5174(Top 34%)5174(Top 98%)
24M24.00 mi1.00 mi4434-1074138-904138-905907(Top 22%)5037(Top 33%)5037(Top 95%)
40K24.85 mi0.85 mi4467-334165-274165-275838(Top 22%)4904(Top 32%)4904(Top 93%)
25.2M25.20 mi0.35 mi4499-324192-274192-276807(Top 26%)5439(Top 36%)5439(Top 103%)
Finish26.22 mi1.02 mi4473+264163+294163+294539(Top 17%)3947(Top 26%)3947(Top 75%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21stories
+97ft-345ft

Overall

4236

Males

3973

M18-39

3973

5K→10K

3.1 - 6.2 mi

Top 16%
×5stories
+79ft-138ft

Overall

4288

Males

4016

M18-39

4016

10K→15K

6.2 - 9.3 mi

Top 16%
×3stories
+67ft-78ft

Overall

4236

Males

3973

M18-39

3973

15K→20K

9.3 - 12.4 mi

Top 19%
×5stories
+106ft-86ft

Overall

5055

Males

4678

M18-39

4678

20K→Half

12.4 - 13.1 mi

Top 15%
×2stories
+19ft-37ft

Overall

4069

Males

3821

M18-39

3821

Half→25K

13.1 - 15.5 mi

Top 20%
×4stories
+66ft-88ft

Overall

5226

Males

4818

M18-39

4818

25K→30K

15.5 - 18.6 mi

Top 15%
×9stories
+181ft-148ft

Overall

4070

Males

3800

M18-39

3800

30K→20M

18.6 - 20.0 mi

Top 11%
×5stories
+64ft-50ft

Overall

2964

Males

2789

M18-39

2789

20M→21M

20.0 - 21.0 mi

Top 19%
×8stories
+106ft-24ft

Overall

4979

Males

4457

M18-39

4457

21M→35K

21.0 - 21.8 mi

Top 17%
×7stories
+17ft-86ft

Overall

4560

Males

4151

M18-39

4151

35K→23M

21.8 - 23.0 mi

Top 23%
×5stories
+23ft-63ft

Overall

5996

Males

5174

M18-39

5174

23M→24M

23.0 - 24.0 mi

Top 22%
×6stories
+12ft-82ft

Overall

5907

Males

5037

M18-39

5037

24M→40K

24.0 - 24.9 mi

Top 22%
×1story
+6ft-20ft

Overall

5838

Males

4904

M18-39

4904

40K→25.2M

24.9 - 25.2 mi

Top 26%
×1story
+13ft-16ft

Overall

6807

Males

5439

M18-39

5439

25.2M→Finish

25.2 - 26.2 mi

Top 17%
×2stories
+22ft-21ft

Overall

4539

Males

3947

M18-39

3947

Passing Analysis

Category:
Athletes Passed
765
Passed By
1985
Net Change
-1220
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3253
5K → 10K59536-477#3253#3730
10K → 15K60205-145#3730#3875
15K → 20K33335-302#3875#4177
20K → Half2512+13#4177#4164
Half → 25K41218-177#4164#4341
25K → 30K14669+77#4341#4264
30K → 20M1588+150#4264#4114
20M → 21M54107-53#4114#4167
21M → 35K2837-9#4167#4176
35K → 23M32183-151#4176#4327
23M → 24M25132-107#4327#4434
24M → 40K3164-33#4434#4467
40K → 25.2M1143-32#4467#4499
25.2M → Finish6236+26#4499#4473
TOTALS7651985-1220
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing