Boston Marathon logo
BOSTON MARATHON 2023

Michael Perez

Bib: 31947•M

MI

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

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
7:36/mi
23:38
↑ 97↓ 3451.5%
10K· 6.21 mi
7:49/mi
47:55
↑ 79↓ 1380.4%
15K· 9.32 mi
8:14/mi
1:13:29
↑ 67↓ 78
20K· 12.43 mi
8:45/mi
1:40:40
↑ 106↓ 860.1%
Half· 13.11 mi
8:39/mi
1:46:34
↑ 19↓ 370.5%
25K· 15.53 mi
9:09/mi
2:08:46
↑ 66↓ 880.2%
30K· 18.64 mi
10:24/mi
2:41:05
↑ 181↓ 1480.2%
20M
11:27/mi
2:56:39
↑ 64↓ 500.2%
21M
13:57/mi
3:10:36
↑ 106↓ 241.6%
35K· 21.75 mi
12:34/mi
3:20:00
↑ 17↓ 861.7%
23M
11:24/mi
3:34:16
↑ 23↓ 630.6%
24M
11:05/mi
3:45:21
↓ 821.3%
40K· 24.85 mi
10:20/mi
3:54:11
↓ 200.3%
25.2M
11:10/mi
3:58:02
↑ 13↓ 160.2%
Finish· 26.22 mi
9:43/mi
4:07:56
↑ 22↓ 21

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
Time1:46:34
Pace8:08 /mi
2nd Half
Distance13.11 mi
Time2:21:22
Pace10:47 /mi
📊Positive Split: 32.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:42:3523:387:3623:38
7:36
-
10K
6.21 mi12:06:5247:557:4324:17
7:49
+0:13
15K
9.32 mi12:32:261:13:297:5325:34
8:14
+0:25
20K
12.43 mi12:59:371:40:408:0627:11
8:45
+0:31
Half
13.11 mi13:05:311:46:348:085:54
8:39
-0:06
25K
15.53 mi13:27:432:08:468:1722:12
9:09
+0:30
30K
18.64 mi14:00:022:41:058:3832:19
10:24
+1:15
20M
20.00 mi14:15:362:56:398:5015:34
11:27
+1:03
21M
21.00 mi14:29:333:10:369:0513:57
13:57
+2:30
35K
21.75 mi14:38:573:20:009:129:24
12:34
-1:23
23M
23.00 mi14:53:133:34:169:1914:16
11:24
-1:10
24M
24.00 mi15:04:183:45:219:2311:05
11:05
-0:19
40K
24.85 mi15:13:083:54:119:258:50
10:20
-0:45
25.2M
25.20 mi15:16:593:58:029:273:51
11:10
+0:50
Finish
26.22 mi15:26:534:07:569:289:54
9:43
-1:27

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

7:36 /mi

Average Pace

9:28 /mi

Slowest Pace

13:57 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:08:46

52% of race

Time at Steady Pace

1:05:59

27% of race

Time at Slower Pace

53:11

21% of race

Average Pace: 9:27 /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 mi11:42:3523:387:3623:38
7:36
#10597
10K
6.21 mi12:06:5247:557:4324:17
7:49
#11921
15K
9.32 mi12:32:261:13:297:5325:34
8:14
#13447
20K
12.43 mi12:59:371:40:408:0627:11
8:45
#14863
Half
13.11 mi13:05:311:46:348:085:54
8:39
#15084
25K
15.53 mi13:27:432:08:468:1722:12
9:09
#15964
30K
18.64 mi14:00:022:41:058:3832:19
10:24
#17612
20M
20.00 mi14:15:362:56:398:5015:34
11:27
#18513
21M
21.00 mi14:29:333:10:369:0513:57
13:57
#19390
35K
21.75 mi14:38:573:20:009:129:24
12:34
#19883
23M
23.00 mi14:53:133:34:169:1914:16
11:24
#20180
24M
24.00 mi15:04:183:45:219:2311:05
11:05
#20362
40K
24.85 mi15:13:083:54:119:258:50
10:20
#20369
25.2M
25.20 mi15:16:593:58:029:273:51
11:10
#20373
Finish
26.22 mi15:26:534:07:569:289:54
9:43
#20384
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi105978455845516064(Top 60%)10720(Top 71%)10720(Top 203%)
10K6.21 mi3.10 mi11921-13249077-6229077-62213266(Top 50%)9664(Top 64%)9664(Top 183%)
15K9.32 mi3.11 mi13447-15269712-6359712-63516064(Top 60%)10720(Top 71%)10720(Top 203%)
20K12.43 mi3.11 mi14863-141610251-53910251-53918412(Top 69%)11652(Top 77%)11652(Top 220%)
Half13.11 mi0.68 mi15084-22110329-7810329-7818598(Top 70%)11759(Top 77%)11759(Top 222%)
25K15.53 mi2.42 mi15964-88010633-30410633-30419641(Top 74%)12128(Top 80%)12128(Top 229%)
30K18.64 mi3.11 mi17612-164811265-63211265-63222003(Top 83%)13070(Top 86%)13070(Top 247%)
20M20.00 mi1.36 mi18513-90111617-35211617-35223447(Top 88%)13663(Top 90%)13663(Top 259%)
21M21.00 mi1.00 mi19390-87711975-35811975-35824982(Top 94%)14355(Top 95%)14355(Top 272%)
35K21.75 mi0.75 mi19883-49312176-20112176-20125231(Top 95%)14431(Top 95%)14431(Top 273%)
23M23.00 mi1.25 mi20180-29712288-11212288-11223051(Top 87%)13411(Top 88%)13411(Top 254%)
24M24.00 mi1.00 mi20362-18212359-7112359-7123185(Top 87%)13429(Top 88%)13429(Top 254%)
40K24.85 mi0.85 mi20369-712353+612353+620808(Top 78%)12291(Top 81%)12291(Top 233%)
25.2M25.20 mi0.35 mi20373-412348+512348+520798(Top 78%)12298(Top 81%)12298(Top 233%)
Finish26.22 mi1.02 mi20384-1112347+112347+120835(Top 78%)12334(Top 81%)12334(Top 233%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 60%
×21story building
+97ft-345ft

Overall

16064

Males

10720

M18-39

10720

5K→10K

3.1 - 6.2 mi

Top 50%
×5story building
+79ft-138ft

Overall

13266

Males

9664

M18-39

9664

10K→15K

6.2 - 9.3 mi

Top 60%
×3story building
+67ft-78ft

Overall

16064

Males

10720

M18-39

10720

15K→20K

9.3 - 12.4 mi

Top 69%
×5story building
+106ft-86ft

Overall

18412

Males

11652

M18-39

11652

20K→Half

12.4 - 13.1 mi

Top 70%
×2story building
+19ft-37ft

Overall

18598

Males

11759

M18-39

11759

Half→25K

13.1 - 15.5 mi

Top 74%
×4story building
+66ft-88ft

Overall

19641

Males

12128

M18-39

12128

25K→30K

15.5 - 18.6 mi

Top 83%
×9story building
+181ft-148ft

Overall

22003

Males

13070

M18-39

13070

30K→20M

18.6 - 20.0 mi

Top 88%
×5story building
+64ft-50ft

Overall

23447

Males

13663

M18-39

13663

20M→21M

20.0 - 21.0 mi

Top 94%
×8story building
+106ft-24ft

Overall

24982

Males

14355

M18-39

14355

21M→35K

21.0 - 21.8 mi

Top 95%
×7story building
+17ft-86ft

Overall

25231

Males

14431

M18-39

14431

35K→23M

21.8 - 23.0 mi

Top 87%
×5story building
+23ft-63ft

Overall

23051

Males

13411

M18-39

13411

23M→24M

23.0 - 24.0 mi

Top 87%
×6story building
+12ft-82ft

Overall

23185

Males

13429

M18-39

13429

24M→40K

24.0 - 24.9 mi

Top 78%
×1story
+6ft-20ft

Overall

20808

Males

12291

M18-39

12291

40K→25.2M

24.9 - 25.2 mi

Top 78%
×1story
+13ft-16ft

Overall

20798

Males

12298

M18-39

12298

25.2M→Finish

25.2 - 26.2 mi

Top 78%
×2story building
+22ft-21ft

Overall

20835

Males

12334

M18-39

12334

Passing Analysis

Category:
Athletes Passed
254
Passed By
10041
Net Change
-9787
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10597
5K → 10K401364-1324#10597#11921
10K → 15K121538-1526#11921#13447
15K → 20K191435-1416#13447#14863
20K → Half9230-221#14863#15084
Half → 25K17897-880#15084#15964
25K → 30K161664-1648#15964#17612
30K → 20M5906-901#17612#18513
20M → 21M3880-877#18513#19390
21M → 35K3496-493#19390#19883
35K → 23M26323-297#19883#20180
23M → 24M7189-182#20180#20362
24M → 40K4148-7#20362#20369
40K → 25.2M1822-4#20369#20373
25.2M → Finish3849-11#20373#20384
TOTALS25410041-9787
📊

Passing Visuals

Category:
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

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing