Boston Marathon logo
BOSTON MARATHON 2023

Alexander Fish

Bib: 29428•M

NY

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Gender (Male)
#0 / 15176
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
33:55
Rank: #25560
Start → 5K
33:55 | 10:55/mi
10K· 6.21 mi
1:07:02
Rank: #25243 (+317)
5K → 10K
33:07 | 10:40/mi
15K· 9.32 mi
1:39:32
Rank: #24941 (+302)
10K → 15K
32:30 | 10:28/mi
20K· 12.43 mi
2:12:10
Rank: #24654 (+287)
15K → 20K
32:38 | 10:30/mi
Half· 13.11 mi
2:19:09
Rank: #24612 (+42)
20K → Half
6:59 | 10:14/mi
25K· 15.53 mi
2:45:31
Rank: #24458 (+154)
Half → 25K
26:22 | 10:52/mi
30K· 18.64 mi
3:22:10
Rank: #24441 (+17)
25K → 30K
36:39 | 11:48/mi
20M
3:39:54
Rank: #24525 (-84)
30K → 20M
17:44 | 13:03/mi
21M
3:53:02
Rank: #24525
20M → 21M
13:08 | 13:08/mi
35K· 21.75 mi
4:01:52
Rank: #24524 (+1)
21M → 35K
8:50 | 11:48/mi
23M
4:17:38
Rank: #24555 (-31)
35K → 23M
15:46 | 12:36/mi
24M
4:30:05
Rank: #24589 (-34)
23M → 24M
12:27 | 12:27/mi
40K· 24.85 mi
4:41:19
Rank: #24636 (-47)
24M → 40K
11:14 | 13:08/mi
25.2M
4:45:38
Rank: #24623 (+13)
40K → 25.2M
4:19 | 12:31/mi
Finish· 26.22 mi
4:56:48
Rank: #24619 (+4)
25.2M → Finish
11:10 | 10:57/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
Time2:19:09
Pace10:37 /mi
2nd Half
Distance13.11 mi
Time2:37:39
Pace12:02 /mi
📊Positive Split: 13.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:0733:5510:5533:55
10:55
-
10K
6.21 mi12:25:141:07:0210:4733:07
10:40
-0:15
15K
9.32 mi12:57:441:39:3210:4132:30
10:28
-0:12
20K
12.43 mi13:30:222:12:1010:3832:38
10:30
+0:02
Half
13.11 mi13:37:212:19:0910:376:59
10:14
-0:16
25K
15.53 mi14:03:432:45:3110:3926:22
10:52
+0:38
30K
18.64 mi14:40:223:22:1010:5136:39
11:48
+0:56
20M
20.00 mi14:58:063:39:5411:0017:44
13:03
+1:15
21M
21.00 mi15:11:143:53:0211:0613:08
13:08
+0:05
35K
21.75 mi15:20:044:01:5211:078:50
11:48
-1:20
23M
23.00 mi15:35:504:17:3811:1215:46
12:36
+0:48
24M
24.00 mi15:48:174:30:0511:1512:27
12:27
-0:09
40K
24.85 mi15:59:314:41:1911:1911:14
13:08
+0:41
25.2M
25.20 mi16:03:504:45:3811:204:19
12:31
-0:37
Finish
26.22 mi16:15:004:56:4811:2011:10
10:57
-1:34

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

10:14 /mi

Average Pace

11:20 /mi

Slowest Pace

13:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:56:41

60% of race

Time at Steady Pace

45:29

15% of race

Time at Slower Pace

1:14:38

25% of race

Average Pace: 11:19 /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 mi11:52:0733:5510:5533:55
10:55
#25560
10K
6.21 mi12:25:141:07:0210:4733:07
10:40
#25243
15K
9.32 mi12:57:441:39:3210:4132:30
10:28
#24941
20K
12.43 mi13:30:222:12:1010:3832:38
10:30
#24654
Half
13.11 mi13:37:212:19:0910:376:59
10:14
#24612
25K
15.53 mi14:03:432:45:3110:3926:22
10:52
#24458
30K
18.64 mi14:40:223:22:1010:5136:39
11:48
#24441
20M
20.00 mi14:58:063:39:5411:0017:44
13:03
#24525
21M
21.00 mi15:11:143:53:0211:0613:08
13:08
#24525
35K
21.75 mi15:20:044:01:5211:078:50
11:48
#24524
23M
23.00 mi15:35:504:17:3811:1215:46
12:36
#24555
24M
24.00 mi15:48:174:30:0511:1512:27
12:27
#24589
40K
24.85 mi15:59:314:41:1911:1911:14
13:08
#24636
25.2M
25.20 mi16:03:504:45:3811:204:19
12:31
#24623
Finish
26.22 mi16:15:004:56:4811:2011:10
10:57
#24619
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi25560147771477724391(Top 92%)14254(Top 94%)14254(Top 270%)
10K6.21 mi3.10 mi25243+31714655+12214655+12224948(Top 94%)14512(Top 96%)14512(Top 275%)
15K9.32 mi3.11 mi24941+30214516+13914516+13924391(Top 92%)14254(Top 94%)14254(Top 270%)
20K12.43 mi3.11 mi24654+28714370+14614370+14623836(Top 90%)14003(Top 92%)14003(Top 265%)
Half13.11 mi0.68 mi24612+4214350+2014350+2023727(Top 89%)13952(Top 92%)13952(Top 264%)
25K15.53 mi2.42 mi24458+15414275+7514275+7523778(Top 89%)13923(Top 92%)13923(Top 263%)
30K18.64 mi3.11 mi24441+1714248+2714248+2724255(Top 91%)14084(Top 93%)14084(Top 266%)
20M20.00 mi1.36 mi24525-8414281-3314281-3325220(Top 95%)14485(Top 95%)14485(Top 274%)
21M21.00 mi1.00 mi2452514271+1014271+1024236(Top 91%)13998(Top 92%)13998(Top 265%)
35K21.75 mi0.75 mi24524+1142711427124484(Top 92%)14076(Top 93%)14076(Top 266%)
23M23.00 mi1.25 mi24555-3114273-214273-224677(Top 93%)14181(Top 93%)14181(Top 268%)
24M24.00 mi1.00 mi24589-3414272+114272+125016(Top 94%)14304(Top 94%)14304(Top 271%)
40K24.85 mi0.85 mi24636-4714281-914281-925047(Top 94%)14327(Top 94%)14327(Top 271%)
25.2M25.20 mi0.35 mi24623+1314276+514276+523305(Top 88%)13459(Top 89%)13459(Top 255%)
Finish26.22 mi1.02 mi24619+414273+314273+323887(Top 90%)13768(Top 91%)13768(Top 261%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 92%
×21stories
+97ft-345ft

Overall

24391

Males

14254

M18-39

14254

5K→10K

3.1 - 6.2 mi

Top 94%
×5stories
+79ft-138ft

Overall

24948

Males

14512

M18-39

14512

10K→15K

6.2 - 9.3 mi

Top 92%
×3stories
+67ft-78ft

Overall

24391

Males

14254

M18-39

14254

15K→20K

9.3 - 12.4 mi

Top 90%
×5stories
+106ft-86ft

Overall

23836

Males

14003

M18-39

14003

20K→Half

12.4 - 13.1 mi

Top 89%
×2stories
+19ft-37ft

Overall

23727

Males

13952

M18-39

13952

Half→25K

13.1 - 15.5 mi

Top 89%
×4stories
+66ft-88ft

Overall

23778

Males

13923

M18-39

13923

25K→30K

15.5 - 18.6 mi

Top 91%
×9stories
+181ft-148ft

Overall

24255

Males

14084

M18-39

14084

30K→20M

18.6 - 20.0 mi

Top 95%
×5stories
+64ft-50ft

Overall

25220

Males

14485

M18-39

14485

20M→21M

20.0 - 21.0 mi

Top 91%
×8stories
+106ft-24ft

Overall

24236

Males

13998

M18-39

13998

21M→35K

21.0 - 21.8 mi

Top 92%
×7stories
+17ft-86ft

Overall

24484

Males

14076

M18-39

14076

35K→23M

21.8 - 23.0 mi

Top 93%
×5stories
+23ft-63ft

Overall

24677

Males

14181

M18-39

14181

23M→24M

23.0 - 24.0 mi

Top 94%
×6stories
+12ft-82ft

Overall

25016

Males

14304

M18-39

14304

24M→40K

24.0 - 24.9 mi

Top 94%
×1story
+6ft-20ft

Overall

25047

Males

14327

M18-39

14327

40K→25.2M

24.9 - 25.2 mi

Top 88%
×1story
+13ft-16ft

Overall

23305

Males

13459

M18-39

13459

25.2M→Finish

25.2 - 26.2 mi

Top 90%
×2stories
+22ft-21ft

Overall

23887

Males

13768

M18-39

13768

Passing Analysis

Category:
Athletes Passed
1498
Passed By
557
Net Change
+941
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25560
5K → 10K36144+317#25560#25243
10K → 15K31412+302#25243#24941
15K → 20K2936+287#24941#24654
20K → Half442+42#24654#24612
Half → 25K17521+154#24612#24458
25K → 30K11699+17#24458#24441
30K → 20M20104-84#24441#24525
20M → 21M38380#24525#24525
21M → 35K2524+1#24525#24524
35K → 23M3162-31#24524#24555
23M → 24M2054-34#24555#24589
24M → 40K1360-47#24589#24636
40K → 25.2M185+13#24636#24623
25.2M → Finish3026+4#24623#24619
TOTALS1498557+941
📊

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