Boston Marathon logo
BOSTON MARATHON 2023

Alonso Cepeda

Bib: 8035•M

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 9%
Gender (Male)
#0 / 15176
Top 15%
Division (M18-39)
#0 / 5285
Top 34%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:26
Rank: #2708
Start → 5K
20:26 | 6:35/mi
10K· 6.21 mi
40:40
Rank: #2765 (-57)
5K → 10K
20:14 | 6:31/mi
15K· 9.32 mi
1:01:02
Rank: #2812 (-47)
10K → 15K
20:22 | 6:33/mi
20K· 12.43 mi
1:21:38
Rank: #2858 (-46)
15K → 20K
20:36 | 6:38/mi
Half· 13.11 mi
1:26:06
Rank: #2866 (-8)
20K → Half
4:28 | 6:33/mi
25K· 15.53 mi
1:42:43
Rank: #3073 (-207)
Half → 25K
16:37 | 6:51/mi
30K· 18.64 mi
2:03:26
Rank: #2867 (+206)
25K → 30K
20:43 | 6:40/mi
20M
2:12:29
Rank: #2771 (+96)
30K → 20M
9:03 | 6:40/mi
21M
2:19:40
Rank: #2751 (+20)
20M → 21M
7:11 | 7:11/mi
35K· 21.75 mi
2:24:32
Rank: #2717 (+34)
21M → 35K
4:52 | 6:30/mi
23M
2:33:00
Rank: #2666 (+51)
35K → 23M
8:28 | 6:46/mi
24M
2:39:26
Rank: #2583 (+83)
23M → 24M
6:26 | 6:26/mi
40K· 24.85 mi
2:44:58
Rank: #2513 (+70)
24M → 40K
5:32 | 6:28/mi
25.2M
2:47:26
Rank: #2501 (+12)
40K → 25.2M
2:28 | 7:09/mi
Finish· 26.22 mi
2:53:56
Rank: #2455 (+46)
25.2M → Finish
6:30 | 6:23/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
Time1:26:06
Pace6:34 /mi
2nd Half
Distance13.11 mi
Time1:27:50
Pace6:42 /mi
📊Positive Split: 2.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:45:2920:266:3520:26
6:35
-
10K
6.21 mi11:05:4340:406:3320:14
6:31
-0:04
15K
9.32 mi11:26:051:01:026:3320:22
6:33
+0:02
20K
12.43 mi11:46:411:21:386:3420:36
6:38
+0:05
Half
13.11 mi11:51:091:26:066:344:28
6:33
-0:05
25K
15.53 mi12:07:461:42:436:3716:37
6:51
+0:18
30K
18.64 mi12:28:292:03:266:3720:43
6:40
-0:11
20M
20.00 mi12:37:322:12:296:379:03
6:40
0:00
21M
21.00 mi12:44:432:19:406:397:11
7:11
+0:31
35K
21.75 mi12:49:352:24:326:394:52
6:30
-0:41
23M
23.00 mi12:58:032:33:006:398:28
6:46
+0:16
24M
24.00 mi13:04:292:39:266:396:26
6:26
-0:20
40K
24.85 mi13:10:012:44:586:385:32
6:28
+0:02
25.2M
25.20 mi13:12:292:47:266:392:28
7:09
+0:41
Finish
26.22 mi13:18:592:53:566:386:30
6:23
-0:46

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

6:23 /mi

Average Pace

6:38 /mi

Slowest Pace

7:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:44:17

94% of race

Time at Steady Pace

9:39

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:38 /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 mi10:45:2920:266:3520:26
6:35
#2708
10K
6.21 mi11:05:4340:406:3320:14
6:31
#2765
15K
9.32 mi11:26:051:01:026:3320:22
6:33
#2812
20K
12.43 mi11:46:411:21:386:3420:36
6:38
#2858
Half
13.11 mi11:51:091:26:066:344:28
6:33
#2866
25K
15.53 mi12:07:461:42:436:3716:37
6:51
#3073
30K
18.64 mi12:28:292:03:266:3720:43
6:40
#2867
20M
20.00 mi12:37:322:12:296:379:03
6:40
#2771
21M
21.00 mi12:44:432:19:406:397:11
7:11
#2751
35K
21.75 mi12:49:352:24:326:394:52
6:30
#2717
23M
23.00 mi12:58:032:33:006:398:28
6:46
#2666
24M
24.00 mi13:04:292:39:266:396:26
6:26
#2583
40K
24.85 mi13:10:012:44:586:385:32
6:28
#2513
25.2M
25.20 mi13:12:292:47:266:392:28
7:09
#2501
Finish
26.22 mi13:18:592:53:566:386:30
6:23
#2455
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2708257925792955(Top 11%)2821(Top 19%)2821(Top 53%)
10K6.21 mi3.10 mi2765-572636-572636-572863(Top 11%)2735(Top 18%)2735(Top 52%)
15K9.32 mi3.11 mi2812-472684-482684-482955(Top 11%)2821(Top 19%)2821(Top 53%)
20K12.43 mi3.11 mi2858-462731-472731-473032(Top 11%)2887(Top 19%)2887(Top 55%)
Half13.11 mi0.68 mi2866-82737-62737-63031(Top 11%)2896(Top 19%)2896(Top 55%)
25K15.53 mi2.42 mi3073-2072930-1932930-1934586(Top 17%)4265(Top 28%)4265(Top 81%)
30K18.64 mi3.11 mi2867+2062742+1882742+1882260(Top 8%)2155(Top 14%)2155(Top 41%)
20M20.00 mi1.36 mi2771+962647+952647+952120(Top 8%)2021(Top 13%)2021(Top 38%)
21M21.00 mi1.00 mi2751+202629+182629+182977(Top 11%)2788(Top 18%)2788(Top 53%)
35K21.75 mi0.75 mi2717+342597+322597+322429(Top 9%)2301(Top 15%)2301(Top 44%)
23M23.00 mi1.25 mi2666+512547+502547+502436(Top 9%)2288(Top 15%)2288(Top 43%)
24M24.00 mi1.00 mi2583+832468+792468+791819(Top 7%)1715(Top 11%)1715(Top 32%)
40K24.85 mi0.85 mi2513+702399+692399+691454(Top 5%)1373(Top 9%)1373(Top 26%)
25.2M25.20 mi0.35 mi2501+122387+122387+122290(Top 9%)2123(Top 14%)2123(Top 40%)
Finish26.22 mi1.02 mi2455+462346+412346+411929(Top 7%)1800(Top 12%)1800(Top 34%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 11%
×21stories
+97ft-345ft

Overall

2955

Males

2821

M18-39

2821

5K→10K

3.1 - 6.2 mi

Top 11%
×5stories
+79ft-138ft

Overall

2863

Males

2735

M18-39

2735

10K→15K

6.2 - 9.3 mi

Top 11%
×3stories
+67ft-78ft

Overall

2955

Males

2821

M18-39

2821

15K→20K

9.3 - 12.4 mi

Top 11%
×5stories
+106ft-86ft

Overall

3032

Males

2887

M18-39

2887

20K→Half

12.4 - 13.1 mi

Top 11%
×2stories
+19ft-37ft

Overall

3031

Males

2896

M18-39

2896

Half→25K

13.1 - 15.5 mi

Top 17%
×4stories
+66ft-88ft

Overall

4586

Males

4265

M18-39

4265

25K→30K

15.5 - 18.6 mi

Top 8%
×9stories
+181ft-148ft

Overall

2260

Males

2155

M18-39

2155

30K→20M

18.6 - 20.0 mi

Top 8%
×5stories
+64ft-50ft

Overall

2120

Males

2021

M18-39

2021

20M→21M

20.0 - 21.0 mi

Top 11%
×8stories
+106ft-24ft

Overall

2977

Males

2788

M18-39

2788

21M→35K

21.0 - 21.8 mi

Top 9%
×7stories
+17ft-86ft

Overall

2429

Males

2301

M18-39

2301

35K→23M

21.8 - 23.0 mi

Top 9%
×5stories
+23ft-63ft

Overall

2436

Males

2288

M18-39

2288

23M→24M

23.0 - 24.0 mi

Top 7%
×6stories
+12ft-82ft

Overall

1819

Males

1715

M18-39

1715

24M→40K

24.0 - 24.9 mi

Top 5%
×1story
+6ft-20ft

Overall

1454

Males

1373

M18-39

1373

40K→25.2M

24.9 - 25.2 mi

Top 9%
×1story
+13ft-16ft

Overall

2290

Males

2123

M18-39

2123

25.2M→Finish

25.2 - 26.2 mi

Top 7%
×2stories
+22ft-21ft

Overall

1929

Males

1800

M18-39

1800

Passing Analysis

Category:
Athletes Passed
1007
Passed By
754
Net Change
+253
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2708
5K → 10K129186-57#2708#2765
10K → 15K69116-47#2765#2812
15K → 20K5096-46#2812#2858
20K → Half1321-8#2858#2866
Half → 25K20227-207#2866#3073
25K → 30K2115+206#3073#2867
30K → 20M971+96#2867#2771
20M → 21M4828+20#2771#2751
21M → 35K439+34#2751#2717
35K → 23M7423+51#2717#2666
23M → 24M929+83#2666#2583
24M → 40K755+70#2583#2513
40K → 25.2M2311+12#2513#2501
25.2M → Finish6317+46#2501#2455
TOTALS1007754+253
📊

Passing Visuals

Category:

📈Position Graph

Loading...

🎨Heatmap Timeline

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