Boston Marathon logo
BOSTON MARATHON 2025

Santiago Castillo

Bib: 12624•M

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Top 32%
Gender (Male)
#0 / 16105
Top 45%
Masters (Masters Men)
#0 / 10463
Top 34%
Division (M50-54)
#0 / 1996
Top 33%
Race Day Weather
50°/40°F
broken clouds

⏱️ 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
7:29/mi
23:16
↑ 97↓ 3451.5%
10K· 6.21 mi
7:22/mi
46:08
↑ 79↓ 1380.4%
15K· 9.32 mi
7:17/mi
1:08:46
↑ 67↓ 78
20K· 12.43 mi
7:22/mi
1:31:40
↑ 106↓ 860.1%
Half· 13.11 mi
7:12/mi
1:36:35
↑ 19↓ 370.5%
25K· 15.53 mi
7:20/mi
1:54:21
↑ 66↓ 880.2%
30K· 18.64 mi
7:40/mi
2:18:10
↑ 181↓ 1480.2%
20M
7:43/mi
2:28:39
↑ 64↓ 500.2%
21M
8:15/mi
2:36:54
↑ 106↓ 241.6%
35K· 21.75 mi
7:16/mi
2:42:20
↑ 17↓ 861.7%
23M
7:41/mi
2:51:57
↑ 23↓ 630.6%
24M
7:37/mi
2:59:34
↓ 821.3%
40K· 24.85 mi
7:48/mi
3:06:14
↓ 200.3%
25.2M
8:36/mi
3:09:12
↑ 13↓ 160.2%
Finish· 26.22 mi
7:34/mi
3:16:55
↑ 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
Time1:36:35
Pace7:22 /mi
2nd Half
Distance13.11 mi
Time1:40:20
Pace7:39 /mi
📊Positive Split: 3.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:3223:167:2923:16
7:29
-
10K
6.21 mi11:14:2446:087:2522:52
7:22
-0:07
15K
9.32 mi11:37:021:08:467:2322:38
7:17
-0:05
20K
12.43 mi11:59:561:31:407:2322:54
7:22
+0:05
Half
13.11 mi12:04:511:36:357:224:55
7:12
-0:10
25K
15.53 mi12:22:371:54:217:2217:46
7:20
+0:08
30K
18.64 mi12:46:262:18:107:2523:49
7:40
+0:20
20M
20.00 mi12:56:552:28:397:2610:29
7:43
+0:03
21M
21.00 mi13:05:102:36:547:288:15
8:15
+0:32
35K
21.75 mi13:10:362:42:207:285:26
7:16
-0:59
23M
23.00 mi13:20:132:51:577:299:37
7:41
+0:25
24M
24.00 mi13:27:502:59:347:297:37
7:37
-0:04
40K
24.85 mi13:34:303:06:147:306:40
7:48
+0:11
25.2M
25.20 mi13:37:283:09:127:302:58
8:36
+0:48
Finish
26.22 mi13:45:113:16:557:317:43
7:34
-1:02

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

7:12 /mi

Average Pace

7:31 /mi

Slowest Pace

8:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:05:42

94% of race

Time at Steady Pace

8:15

4% of race

Time at Slower Pace

2:58

2% of race

Average Pace: 7:31 /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 mi10:51:3223:167:2923:16
7:29
#12118
10K
6.21 mi11:14:2446:087:2522:52
7:22
#11447
15K
9.32 mi11:37:021:08:467:2322:38
7:17
#10863
20K
12.43 mi11:59:561:31:407:2322:54
7:22
#10548
Half
13.11 mi12:04:511:36:357:224:55
7:12
#10462
25K
15.53 mi12:22:371:54:217:2217:46
7:20
#10103
30K
18.64 mi12:46:262:18:107:2523:49
7:40
#9801
20M
20.00 mi12:56:552:28:397:2610:29
7:43
#9655
21M
21.00 mi13:05:102:36:547:288:15
8:15
#9565
35K
21.75 mi13:10:362:42:207:285:26
7:16
#9437
23M
23.00 mi13:20:132:51:577:299:37
7:41
#9294
24M
24.00 mi13:27:502:59:347:297:37
7:37
#9245
40K
24.85 mi13:34:303:06:147:306:40
7:48
#9182
25.2M
25.20 mi13:37:283:09:127:302:58
8:36
#9165
Finish
26.22 mi13:45:113:16:557:317:43
7:34
#9178
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi12118922292229868(Top 35%)8010(Top 50%)8010(Top 401%)
10K6.21 mi3.10 mi11447+6718890+3328890+33210813(Top 38%)8570(Top 53%)8570(Top 429%)
15K9.32 mi3.11 mi10863+5848579+3118579+3119868(Top 35%)8010(Top 50%)8010(Top 401%)
20K12.43 mi3.11 mi10548+3158394+1858394+1859635(Top 34%)7807(Top 48%)7807(Top 391%)
Half13.11 mi0.68 mi10462+868349+458349+459100(Top 32%)7532(Top 47%)7532(Top 377%)
25K15.53 mi2.42 mi10103+3598114+2358114+2358578(Top 30%)7100(Top 44%)7100(Top 356%)
30K18.64 mi3.11 mi9801+3027906+2087906+2088947(Top 31%)7109(Top 44%)7109(Top 356%)
20M20.00 mi1.36 mi9655+1467791+1157791+1158441(Top 30%)6696(Top 42%)6696(Top 335%)
21M21.00 mi1.00 mi9565+907714+777714+778872(Top 31%)6750(Top 42%)6750(Top 338%)
35K21.75 mi0.75 mi9437+1287626+887626+886991(Top 25%)5701(Top 35%)5701(Top 286%)
23M23.00 mi1.25 mi9294+1437500+1267500+1267775(Top 27%)6034(Top 37%)6034(Top 302%)
24M24.00 mi1.00 mi9245+497445+557445+558523(Top 30%)6399(Top 40%)6399(Top 321%)
40K24.85 mi0.85 mi9182+637372+737372+738718(Top 31%)6375(Top 40%)6375(Top 319%)
25.2M25.20 mi0.35 mi9165+177343+297343+299360(Top 33%)6612(Top 41%)6612(Top 331%)
Finish26.22 mi1.02 mi9178-137308+357308+359699(Top 34%)6810(Top 42%)6810(Top 341%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21story building
+97ft-345ft

Overall

9868

Males

8010

M50-54

8010

5K→10K

3.1 - 6.2 mi

Top 38%
×5story building
+79ft-138ft

Overall

10813

Males

8570

M50-54

8570

10K→15K

6.2 - 9.3 mi

Top 35%
×3story building
+67ft-78ft

Overall

9868

Males

8010

M50-54

8010

15K→20K

9.3 - 12.4 mi

Top 34%
×5story building
+106ft-86ft

Overall

9635

Males

7807

M50-54

7807

20K→Half

12.4 - 13.1 mi

Top 32%
×2story building
+19ft-37ft

Overall

9100

Males

7532

M50-54

7532

Half→25K

13.1 - 15.5 mi

Top 30%
×4story building
+66ft-88ft

Overall

8578

Males

7100

M50-54

7100

25K→30K

15.5 - 18.6 mi

Top 31%
×9story building
+181ft-148ft

Overall

8947

Males

7109

M50-54

7109

30K→20M

18.6 - 20.0 mi

Top 30%
×5story building
+64ft-50ft

Overall

8441

Males

6696

M50-54

6696

20M→21M

20.0 - 21.0 mi

Top 31%
×8story building
+106ft-24ft

Overall

8872

Males

6750

M50-54

6750

21M→35K

21.0 - 21.8 mi

Top 25%
×7story building
+17ft-86ft

Overall

6991

Males

5701

M50-54

5701

35K→23M

21.8 - 23.0 mi

Top 27%
×5story building
+23ft-63ft

Overall

7775

Males

6034

M50-54

6034

23M→24M

23.0 - 24.0 mi

Top 30%
×6story building
+12ft-82ft

Overall

8523

Males

6399

M50-54

6399

24M→40K

24.0 - 24.9 mi

Top 31%
×1story
+6ft-20ft

Overall

8718

Males

6375

M50-54

6375

40K→25.2M

24.9 - 25.2 mi

Top 33%
×1story
+13ft-16ft

Overall

9360

Males

6612

M50-54

6612

25.2M→Finish

25.2 - 26.2 mi

Top 34%
×2story building
+22ft-21ft

Overall

9699

Males

6810

M50-54

6810

Passing Analysis

Category:
Athletes Passed
3488*
Passed By
547
Net Change
+2940
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12118
5K → 10K73160+671#12118#11447
10K → 15K60319+584#11447#10863
15K → 20K34934+315#10863#10548
20K → Half937+86#10548#10462
Half → 25K37213+359#10462#10103
25K → 30K377*75+302#10103#9801
30K → 20M18235+146#9801#9655
20M → 21M13343+90#9655#9565
21M → 35K1368+128#9565#9437
35K → 23M18037+143#9437#9294
23M → 24M10758+49#9294#9245
24M → 40K10643+63#9245#9182
40K → 25.2M4427+17#9182#9165
25.2M → Finish7588-13#9165#9178
TOTALS3488*547+2940

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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