Boston Marathon logo
BOSTON MARATHON 2025

Harold Santos

Bib: 15334•M

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M55-59)
#0 / 1648
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
8:29/mi
26:20
↑ 97↓ 3451.5%
10K· 6.21 mi
8:18/mi
52:07
↑ 79↓ 1380.4%
15K· 9.32 mi
8:00/mi
1:16:57
↑ 67↓ 78
20K· 12.43 mi
7:59/mi
1:41:46
↑ 106↓ 860.1%
Half· 13.11 mi
8:11/mi
1:47:21
↑ 19↓ 370.5%
25K· 15.53 mi
8:31/mi
2:07:59
↑ 66↓ 880.2%
30K· 18.64 mi
8:51/mi
2:35:30
↑ 181↓ 1480.2%
20M
8:06/mi
2:46:30
↑ 64↓ 500.2%
21M
9:47/mi
2:56:17
↑ 106↓ 241.6%
35K· 21.75 mi
8:17/mi
3:02:29
↑ 17↓ 861.7%
23M
8:38/mi
3:13:18
↑ 23↓ 630.6%
24M
8:20/mi
3:21:38
↓ 821.3%
40K· 24.85 mi
8:42/mi
3:29:04
↓ 200.3%
25.2M
10:12/mi
3:32:35
↑ 13↓ 160.2%
Finish· 26.22 mi
8:53/mi
3:41:38
↑ 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
Time1:47:21
Pace8:11 /mi
2nd Half
Distance13.11 mi
Time1:54:17
Pace8:43 /mi
📊Positive Split: 6.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:00:1726:208:2926:20
8:29
-
10K
6.21 mi11:26:0452:078:2325:47
8:18
-0:11
15K
9.32 mi11:50:541:16:578:1524:50
8:00
-0:18
20K
12.43 mi12:15:431:41:468:1124:49
7:59
-0:01
Half
13.11 mi12:21:181:47:218:115:35
8:11
+0:12
25K
15.53 mi12:41:562:07:598:1420:38
8:31
+0:20
30K
18.64 mi13:09:272:35:308:2127:31
8:51
+0:20
20M
20.00 mi13:20:272:46:308:1911:00
8:06
-0:45
21M
21.00 mi13:30:142:56:178:249:47
9:47
+1:41
35K
21.75 mi13:36:263:02:298:236:12
8:17
-1:30
23M
23.00 mi13:47:153:13:188:2410:49
8:38
+0:21
24M
24.00 mi13:55:353:21:388:248:20
8:20
-0:18
40K
24.85 mi14:03:013:29:048:257:26
8:42
+0:22
25.2M
25.20 mi14:06:323:32:358:263:31
10:12
+1:30
Finish
26.22 mi14:15:353:41:388:289:03
8:53
-1:19

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

7:59 /mi

Average Pace

8:28 /mi

Slowest Pace

10:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:00:39

27% of race

Time at Steady Pace

1:51:07

50% of race

Time at Slower Pace

49:52

22% of race

Average Pace: 8:27 /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 mi11:00:1726:208:2926:20
8:29
#19745
10K
6.21 mi11:26:0452:078:2325:47
8:18
#19158
15K
9.32 mi11:50:541:16:578:1524:50
8:00
#18132
20K
12.43 mi12:15:431:41:468:1124:49
7:59
#17267
Half
13.11 mi12:21:181:47:218:115:35
8:11
#17254
25K
15.53 mi12:41:562:07:598:1420:38
8:31
#17200
30K
18.64 mi13:09:272:35:308:2127:31
8:51
#17093
20M
20.00 mi13:20:272:46:308:1911:00
8:06
#16667
21M
21.00 mi13:30:142:56:178:249:47
9:47
#16665
35K
21.75 mi13:36:263:02:298:236:12
8:17
#16549
23M
23.00 mi13:47:153:13:188:2410:49
8:38
#16366
24M
24.00 mi13:55:353:21:388:248:20
8:20
#16208
40K
24.85 mi14:03:013:29:048:257:26
8:42
#16143
25.2M
25.20 mi14:06:323:32:358:263:31
10:12
#16181
Finish
26.22 mi14:15:353:41:388:289:03
8:53
#16281
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi19745123281232815991(Top 56%)10805(Top 67%)10805(Top 656%)
10K6.21 mi3.10 mi19158+58712110+21812110+21818530(Top 65%)11858(Top 74%)11858(Top 720%)
15K9.32 mi3.11 mi18132+102611670+44011670+44015991(Top 56%)10805(Top 67%)10805(Top 656%)
20K12.43 mi3.11 mi17267+86511321+34911321+34914832(Top 52%)10241(Top 64%)10241(Top 621%)
Half13.11 mi0.68 mi17254+1311306+1511306+1517130(Top 60%)11231(Top 70%)11231(Top 681%)
25K15.53 mi2.42 mi17200+5411267+3911267+3917247(Top 61%)11197(Top 70%)11197(Top 679%)
30K18.64 mi3.11 mi17093+10711168+9911168+9916922(Top 60%)10884(Top 68%)10884(Top 660%)
20M20.00 mi1.36 mi16667+42610977+19110977+19111076(Top 39%)8075(Top 50%)8075(Top 490%)
21M21.00 mi1.00 mi16665+210937+4010937+4017383(Top 61%)10867(Top 67%)10867(Top 659%)
35K21.75 mi0.75 mi16549+11610872+6510872+6514173(Top 50%)9370(Top 58%)9370(Top 569%)
23M23.00 mi1.25 mi16366+18310769+10310769+10314171(Top 50%)9250(Top 57%)9250(Top 561%)
24M24.00 mi1.00 mi16208+15810663+10610663+10613476(Top 47%)8895(Top 55%)8895(Top 540%)
40K24.85 mi0.85 mi16143+6510617+4610617+4614563(Top 51%)9252(Top 57%)9252(Top 561%)
25.2M25.20 mi0.35 mi16181-3810624-710624-717830(Top 63%)10732(Top 67%)10732(Top 651%)
Finish26.22 mi1.02 mi16281-10010646-2210646-2218428(Top 65%)11077(Top 69%)11077(Top 672%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 56%
×21story building
+97ft-345ft

Overall

15991

Males

10805

M55-59

10805

5K→10K

3.1 - 6.2 mi

Top 65%
×5story building
+79ft-138ft

Overall

18530

Males

11858

M55-59

11858

10K→15K

6.2 - 9.3 mi

Top 56%
×3story building
+67ft-78ft

Overall

15991

Males

10805

M55-59

10805

15K→20K

9.3 - 12.4 mi

Top 52%
×5story building
+106ft-86ft

Overall

14832

Males

10241

M55-59

10241

20K→Half

12.4 - 13.1 mi

Top 60%
×2story building
+19ft-37ft

Overall

17130

Males

11231

M55-59

11231

Half→25K

13.1 - 15.5 mi

Top 61%
×4story building
+66ft-88ft

Overall

17247

Males

11197

M55-59

11197

25K→30K

15.5 - 18.6 mi

Top 60%
×9story building
+181ft-148ft

Overall

16922

Males

10884

M55-59

10884

30K→20M

18.6 - 20.0 mi

Top 39%
×5story building
+64ft-50ft

Overall

11076

Males

8075

M55-59

8075

20M→21M

20.0 - 21.0 mi

Top 61%
×8story building
+106ft-24ft

Overall

17383

Males

10867

M55-59

10867

21M→35K

21.0 - 21.8 mi

Top 50%
×7story building
+17ft-86ft

Overall

14173

Males

9370

M55-59

9370

35K→23M

21.8 - 23.0 mi

Top 50%
×5story building
+23ft-63ft

Overall

14171

Males

9250

M55-59

9250

23M→24M

23.0 - 24.0 mi

Top 47%
×6story building
+12ft-82ft

Overall

13476

Males

8895

M55-59

8895

24M→40K

24.0 - 24.9 mi

Top 51%
×1story
+6ft-20ft

Overall

14563

Males

9252

M55-59

9252

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1story
+13ft-16ft

Overall

17830

Males

10732

M55-59

10732

25.2M→Finish

25.2 - 26.2 mi

Top 65%
×2story building
+22ft-21ft

Overall

18428

Males

11077

M55-59

11077

Passing Analysis

Category:
Athletes Passed
4272
Passed By
808
Net Change
+3464
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19745
5K → 10K66881+587#19745#19158
10K → 15K10348+1026#19158#18132
15K → 20K8661+865#18132#17267
20K → Half3825+13#17267#17254
Half → 25K190136+54#17254#17200
25K → 30K268161+107#17200#17093
30K → 20M4271+426#17093#16667
20M → 21M109107+2#16667#16665
21M → 35K12711+116#16665#16549
35K → 23M21431+183#16549#16366
23M → 24M17113+158#16366#16208
24M → 40K9732+65#16208#16143
40K → 25.2M2058-38#16143#16181
25.2M → Finish43143-100#16181#16281
TOTALS4272808+3464
📊

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