Boston Marathon logo
BOSTON MARATHON 2025

Dante Contreras

Bib: 21317•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 (M60-64)
#0 / 1259
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
7:53/mi
24:29
↑ 97↓ 3451.5%
10K· 6.21 mi
7:59/mi
49:16
↑ 79↓ 1380.4%
15K· 9.32 mi
8:19/mi
1:15:05
↑ 67↓ 78
20K· 12.43 mi
8:58/mi
1:42:57
↑ 106↓ 860.1%
Half· 13.11 mi
8:43/mi
1:48:54
↑ 19↓ 370.5%
25K· 15.53 mi
9:25/mi
2:11:44
↑ 66↓ 880.2%
30K· 18.64 mi
10:02/mi
2:42:55
↑ 181↓ 1480.2%
20M
10:18/mi
2:56:55
↑ 64↓ 500.2%
21M
11:04/mi
3:07:59
↑ 106↓ 241.6%
35K· 21.75 mi
9:47/mi
3:15:18
↑ 17↓ 861.7%
23M
10:16/mi
3:28:09
↑ 23↓ 630.6%
24M
10:24/mi
3:38:33
↓ 821.3%
40K· 24.85 mi
10:49/mi
3:47:48
↓ 200.3%
25.2M
11:33/mi
3:51:47
↑ 13↓ 160.2%
Finish· 26.22 mi
10:23/mi
4:02:22
↑ 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
Time1:48:54
Pace8:18 /mi
2nd Half
Distance13.11 mi
Time2:13:28
Pace10:11 /mi
📊Positive Split: 22.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:0524:297:5324:29
7:53
-
10K
6.21 mi11:41:5249:167:5624:47
7:59
+0:06
15K
9.32 mi12:07:411:15:058:0325:49
8:19
+0:20
20K
12.43 mi12:35:331:42:578:1727:52
8:58
+0:39
Half
13.11 mi12:41:301:48:548:185:57
8:43
-0:15
25K
15.53 mi13:04:202:11:448:2922:50
9:25
+0:42
30K
18.64 mi13:35:312:42:558:4431:11
10:02
+0:37
20M
20.00 mi13:49:312:56:558:5114:00
10:18
+0:16
21M
21.00 mi14:00:353:07:598:5711:04
11:04
+0:46
35K
21.75 mi14:07:543:15:188:597:19
9:47
-1:17
23M
23.00 mi14:20:453:28:099:0312:51
10:16
+0:29
24M
24.00 mi14:31:093:38:339:0610:24
10:24
+0:08
40K
24.85 mi14:40:243:47:489:109:15
10:49
+0:25
25.2M
25.20 mi14:44:233:51:479:123:59
11:33
+0:44
Finish
26.22 mi14:54:584:02:229:1510:35
10:23
-1:10

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

7:53 /mi

Average Pace

9:15 /mi

Slowest Pace

11:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:11:44

54% of race

Time at Steady Pace

1:26:20

36% of race

Time at Slower Pace

24:18

10% of race

Average Pace: 9:15 /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 mi11:17:0524:297:5324:29
7:53
#15495
10K
6.21 mi11:41:5249:167:5624:47
7:59
#15925
15K
9.32 mi12:07:411:15:058:0325:49
8:19
#16741
20K
12.43 mi12:35:331:42:578:1727:52
8:58
#17899
Half
13.11 mi12:41:301:48:548:185:57
8:43
#18020
25K
15.53 mi13:04:202:11:448:2922:50
9:25
#18791
30K
18.64 mi13:35:312:42:558:4431:11
10:02
#19535
20M
20.00 mi13:49:312:56:558:5114:00
10:18
#19810
21M
21.00 mi14:00:353:07:598:5711:04
11:04
#19953
35K
21.75 mi14:07:543:15:188:597:19
9:47
#20016
23M
23.00 mi14:20:453:28:099:0312:51
10:16
#20144
24M
24.00 mi14:31:093:38:339:0610:24
10:24
#20317
40K
24.85 mi14:40:243:47:489:109:15
10:49
#20473
25.2M
25.20 mi14:44:233:51:479:123:59
11:33
#20524
Finish
26.22 mi14:54:584:02:229:1510:35
10:23
#20681
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi15495106151061518110(Top 64%)11668(Top 72%)11668(Top 927%)
10K6.21 mi3.10 mi15925-43010786-17110786-17116273(Top 57%)10930(Top 68%)10930(Top 868%)
15K9.32 mi3.11 mi16741-81611118-33211118-33218110(Top 64%)11668(Top 72%)11668(Top 927%)
20K12.43 mi3.11 mi17899-115811571-45311571-45320800(Top 73%)12794(Top 79%)12794(Top 1016%)
Half13.11 mi0.68 mi18020-12111619-4811619-4820424(Top 72%)12643(Top 79%)12643(Top 1004%)
25K15.53 mi2.42 mi18791-77111943-32411943-32421600(Top 76%)13119(Top 81%)13119(Top 1042%)
30K18.64 mi3.11 mi19535-74412219-27612219-27621696(Top 76%)13025(Top 81%)13025(Top 1035%)
20M20.00 mi1.36 mi19810-27512316-9712316-9721859(Top 77%)12984(Top 81%)12984(Top 1031%)
21M21.00 mi1.00 mi19953-14312354-3812354-3821561(Top 76%)12756(Top 79%)12756(Top 1013%)
35K21.75 mi0.75 mi20016-6312359-512359-521241(Top 75%)12539(Top 78%)12539(Top 996%)
23M23.00 mi1.25 mi20144-12812389-3012389-3021293(Top 75%)12534(Top 78%)12534(Top 996%)
24M24.00 mi1.00 mi20317-17312453-6412453-6422510(Top 79%)13052(Top 81%)13052(Top 1037%)
40K24.85 mi0.85 mi20473-15612512-5912512-5922706(Top 80%)13086(Top 81%)13086(Top 1039%)
25.2M25.20 mi0.35 mi20524-5112526-1412526-1422130(Top 78%)12836(Top 80%)12836(Top 1020%)
Finish26.22 mi1.02 mi20681-15712582-5612582-5623985(Top 84%)13753(Top 85%)13753(Top 1092%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 64%
×21story building
+97ft-345ft

Overall

18110

Males

11668

M60-64

11668

5K→10K

3.1 - 6.2 mi

Top 57%
×5story building
+79ft-138ft

Overall

16273

Males

10930

M60-64

10930

10K→15K

6.2 - 9.3 mi

Top 64%
×3story building
+67ft-78ft

Overall

18110

Males

11668

M60-64

11668

15K→20K

9.3 - 12.4 mi

Top 73%
×5story building
+106ft-86ft

Overall

20800

Males

12794

M60-64

12794

20K→Half

12.4 - 13.1 mi

Top 72%
×2story building
+19ft-37ft

Overall

20424

Males

12643

M60-64

12643

Half→25K

13.1 - 15.5 mi

Top 76%
×4story building
+66ft-88ft

Overall

21600

Males

13119

M60-64

13119

25K→30K

15.5 - 18.6 mi

Top 76%
×9story building
+181ft-148ft

Overall

21696

Males

13025

M60-64

13025

30K→20M

18.6 - 20.0 mi

Top 77%
×5story building
+64ft-50ft

Overall

21859

Males

12984

M60-64

12984

20M→21M

20.0 - 21.0 mi

Top 76%
×8story building
+106ft-24ft

Overall

21561

Males

12756

M60-64

12756

21M→35K

21.0 - 21.8 mi

Top 75%
×7story building
+17ft-86ft

Overall

21241

Males

12539

M60-64

12539

35K→23M

21.8 - 23.0 mi

Top 75%
×5story building
+23ft-63ft

Overall

21293

Males

12534

M60-64

12534

23M→24M

23.0 - 24.0 mi

Top 79%
×6story building
+12ft-82ft

Overall

22510

Males

13052

M60-64

13052

24M→40K

24.0 - 24.9 mi

Top 80%
×1story
+6ft-20ft

Overall

22706

Males

13086

M60-64

13086

40K→25.2M

24.9 - 25.2 mi

Top 78%
×1story
+13ft-16ft

Overall

22130

Males

12836

M60-64

12836

25.2M→Finish

25.2 - 26.2 mi

Top 84%
×2story building
+22ft-21ft

Overall

23985

Males

13753

M60-64

13753

Passing Analysis

Category:
Athletes Passed
617
Passed By
5803
Net Change
-5186
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15495
5K → 10K165595-430#15495#15925
10K → 15K51867-816#15925#16741
15K → 20K321190-1158#16741#17899
20K → Half15136-121#17899#18020
Half → 25K31802-771#18020#18791
25K → 30K67811-744#18791#19535
30K → 20M41316-275#19535#19810
20M → 21M55198-143#19810#19953
21M → 35K38101-63#19953#20016
35K → 23M54182-128#20016#20144
23M → 24M16189-173#20144#20317
24M → 40K29185-156#20317#20473
40K → 25.2M1162-51#20473#20524
25.2M → Finish12169-157#20524#20681
TOTALS6175803-5186
📊

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