Boston Marathon logo
BOSTON MARATHON 2023

Jose Castillo

Bib: 8454•M

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 8%
Gender (Male)
#0 / 15176
Top 14%
Division (M18-39)
#0 / 5285
Top 32%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:58
Rank: #1922
Start → 5K
6:26/mi
19:58 split
10K· 6.21 mi
39:56
Rank: #2121 (-199)
5K → 10K
6:26/mi
19:58 split
15K· 9.32 mi
59:48
Rank: #2082 (+39)
10K → 15K
6:24/mi
19:52 split
20K· 12.43 mi
1:20:03
Rank: #2153 (-71)
15K → 20K
6:31/mi
20:15 split
Half· 13.11 mi
1:24:26
Rank: #2158 (-5)
20K → Half
6:25/mi
4:23 split
25K· 15.53 mi
1:40:21
Rank: #2201 (-43)
Half → 25K
6:34/mi
15:55 split
30K· 18.64 mi
2:00:57
Rank: #2170 (+31)
25K → 30K
6:38/mi
20:36 split
20M
2:10:05
Rank: #2166 (+4)
30K → 20M
6:43/mi
9:08 split
21M
2:17:08
Rank: #2157 (+9)
20M → 21M
7:03/mi
7:03 split
35K· 21.75 mi
2:22:05
Rank: #2175 (-18)
21M → 35K
6:37/mi
4:57 split
23M
2:30:42
Rank: #2194 (-19)
35K → 23M
6:53/mi
8:37 split
24M
2:37:22
Rank: #2195 (-1)
23M → 24M
6:40/mi
6:40 split
40K· 24.85 mi
2:43:13
Rank: #2210 (-15)
24M → 40K
6:51/mi
5:51 split
25.2M
2:45:48
Rank: #2214 (-4)
40K → 25.2M
7:29/mi
2:35 split
Finish· 26.22 mi
2:52:56
Rank: #2262 (-48)
25.2M → Finish
7:00/mi
7:08 split

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
Time1:24:26
Pace6:26 /mi
2nd Half
Distance13.11 mi
Time1:28:30
Pace6:45 /mi
📊Positive Split: 4.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:45:0819:586:2619:58
6:26
-
10K
6.21 mi11:05:0639:566:2619:58
6:26
0:00
15K
9.32 mi11:24:5859:486:2519:52
6:24
-0:02
20K
12.43 mi11:45:131:20:036:2620:15
6:31
+0:07
Half
13.11 mi11:49:361:24:266:264:23
6:25
-0:06
25K
15.53 mi12:05:311:40:216:2815:55
6:34
+0:09
30K
18.64 mi12:26:072:00:576:2920:36
6:38
+0:04
20M
20.00 mi12:35:152:10:056:309:08
6:43
+0:05
21M
21.00 mi12:42:182:17:086:327:03
7:03
+0:20
35K
21.75 mi12:47:152:22:056:324:57
6:37
-0:26
23M
23.00 mi12:55:522:30:426:338:37
6:53
+0:16
24M
24.00 mi13:02:322:37:226:336:40
6:40
-0:13
40K
24.85 mi13:08:232:43:136:345:51
6:51
+0:11
25.2M
25.20 mi13:10:582:45:486:352:35
7:29
+0:38
Finish
26.22 mi13:18:062:52:566:367:08
7:00
-0:29

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

6:24 /mi

Average Pace

6:36 /mi

Slowest Pace

7:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:43:18

94% of race

Time at Steady Pace

9:38

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:36 /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 mi10:45:0819:586:2619:58
6:26
#1922
10K
6.21 mi11:05:0639:566:2619:58
6:26
#2121
15K
9.32 mi11:24:5859:486:2519:52
6:24
#2082
20K
12.43 mi11:45:131:20:036:2620:15
6:31
#2153
Half
13.11 mi11:49:361:24:266:264:23
6:25
#2158
25K
15.53 mi12:05:311:40:216:2815:55
6:34
#2201
30K
18.64 mi12:26:072:00:576:2920:36
6:38
#2170
20M
20.00 mi12:35:152:10:056:309:08
6:43
#2166
21M
21.00 mi12:42:182:17:086:327:03
7:03
#2157
35K
21.75 mi12:47:152:22:056:324:57
6:37
#2175
23M
23.00 mi12:55:522:30:426:338:37
6:53
#2194
24M
24.00 mi13:02:322:37:226:336:40
6:40
#2195
40K
24.85 mi13:08:232:43:136:345:51
6:51
#2210
25.2M
25.20 mi13:10:582:45:486:352:35
7:29
#2214
Finish
26.22 mi13:18:062:52:566:367:08
7:00
#2262
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1922183318332074(Top 8%)1989(Top 13%)1989(Top 38%)
10K6.21 mi3.10 mi2121-1992030-1972030-1972368(Top 9%)2268(Top 15%)2268(Top 43%)
15K9.32 mi3.11 mi2082+391996+341996+342074(Top 8%)1989(Top 13%)1989(Top 38%)
20K12.43 mi3.11 mi2153-712062-662062-662381(Top 9%)2281(Top 15%)2281(Top 43%)
Half13.11 mi0.68 mi2158-52068-62068-62353(Top 9%)2258(Top 15%)2258(Top 43%)
25K15.53 mi2.42 mi2201-432110-422110-422507(Top 9%)2398(Top 16%)2398(Top 45%)
30K18.64 mi3.11 mi2170+312082+282082+282100(Top 8%)2007(Top 13%)2007(Top 38%)
20M20.00 mi1.36 mi2166+42076+62076+62368(Top 9%)2244(Top 15%)2244(Top 42%)
21M21.00 mi1.00 mi2157+92066+102066+102369(Top 9%)2238(Top 15%)2238(Top 42%)
35K21.75 mi0.75 mi2175-182084-182084-183039(Top 11%)2841(Top 19%)2841(Top 54%)
23M23.00 mi1.25 mi2194-192102-182102-183099(Top 12%)2885(Top 19%)2885(Top 55%)
24M24.00 mi1.00 mi2195-12106-42106-42896(Top 11%)2688(Top 18%)2688(Top 51%)
40K24.85 mi0.85 mi2210-152121-152121-153005(Top 11%)2763(Top 18%)2763(Top 52%)
25.2M25.20 mi0.35 mi2214-42124-32124-33767(Top 14%)3357(Top 22%)3357(Top 64%)
Finish26.22 mi1.02 mi2262-482166-422166-425160(Top 19%)4368(Top 29%)4368(Top 83%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 8%
×21story building
+97ft-345ft

Overall

2074

Males

1989

M18-39

1989

5K→10K

3.1 - 6.2 mi

Top 9%
×5story building
+79ft-138ft

Overall

2368

Males

2268

M18-39

2268

10K→15K

6.2 - 9.3 mi

Top 8%
×3story building
+67ft-78ft

Overall

2074

Males

1989

M18-39

1989

15K→20K

9.3 - 12.4 mi

Top 9%
×5story building
+106ft-86ft

Overall

2381

Males

2281

M18-39

2281

20K→Half

12.4 - 13.1 mi

Top 9%
×2story building
+19ft-37ft

Overall

2353

Males

2258

M18-39

2258

Half→25K

13.1 - 15.5 mi

Top 9%
×4story building
+66ft-88ft

Overall

2507

Males

2398

M18-39

2398

25K→30K

15.5 - 18.6 mi

Top 8%
×9story building
+181ft-148ft

Overall

2100

Males

2007

M18-39

2007

30K→20M

18.6 - 20.0 mi

Top 9%
×5story building
+64ft-50ft

Overall

2368

Males

2244

M18-39

2244

20M→21M

20.0 - 21.0 mi

Top 9%
×8story building
+106ft-24ft

Overall

2369

Males

2238

M18-39

2238

21M→35K

21.0 - 21.8 mi

Top 11%
×7story building
+17ft-86ft

Overall

3039

Males

2841

M18-39

2841

35K→23M

21.8 - 23.0 mi

Top 12%
×5story building
+23ft-63ft

Overall

3099

Males

2885

M18-39

2885

23M→24M

23.0 - 24.0 mi

Top 11%
×6story building
+12ft-82ft

Overall

2896

Males

2688

M18-39

2688

24M→40K

24.0 - 24.9 mi

Top 11%
×1story
+6ft-20ft

Overall

3005

Males

2763

M18-39

2763

40K→25.2M

24.9 - 25.2 mi

Top 14%
×1story
+13ft-16ft

Overall

3767

Males

3357

M18-39

3357

25.2M→Finish

25.2 - 26.2 mi

Top 19%
×2story building
+22ft-21ft

Overall

5160

Males

4368

M18-39

4368

Passing Analysis

Category:
Athletes Passed
484
Passed By
824
Net Change
-340
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1922
5K → 10K41240-199#1922#2121
10K → 15K8243+39#2121#2082
15K → 20K40111-71#2082#2153
20K → Half1318-5#2153#2158
Half → 25K2972-43#2158#2201
25K → 30K8352+31#2201#2170
30K → 20M3632+4#2170#2166
20M → 21M4233+9#2166#2157
21M → 35K1129-18#2157#2175
35K → 23M3251-19#2175#2194
23M → 24M2829-1#2194#2195
24M → 40K2641-15#2195#2210
40K → 25.2M610-4#2210#2214
25.2M → Finish1563-48#2214#2262
TOTALS484824-340
📊

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
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing