Boston Marathon logo
BOSTON MARATHON 2025

Nicholas Contos

Bib: 28135•M

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Gender (Male)
#0 / 16105
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
28:49
Rank: #23473
Start → 5K
28:49 | 9:17/mi
10K· 6.21 mi
54:36
Rank: #21380 (+2093)
5K → 10K
25:47 | 8:18/mi
15K· 9.32 mi
1:19:22
Rank: #19765 (+1615)
10K → 15K
24:46 | 7:58/mi
20K· 12.43 mi
1:44:44
Rank: #18815 (+950)
15K → 20K
25:22 | 8:10/mi
Half· 13.11 mi
1:50:08
Rank: #18650 (+165)
20K → Half
5:24 | 7:55/mi
25K· 15.53 mi
2:10:12
Rank: #18143 (+507)
Half → 25K
20:04 | 8:17/mi
30K· 18.64 mi
2:38:36
Rank: #18182 (-39)
25K → 30K
28:24 | 9:08/mi
20M
2:52:16
Rank: #18512 (-330)
30K → 20M
13:40 | 10:03/mi
21M
3:02:10
Rank: #18449 (+63)
20M → 21M
9:54 | 9:54/mi
35K· 21.75 mi
3:11:26
Rank: #19127 (-678)
21M → 35K
9:16 | 12:23/mi
23M
3:25:48
Rank: #19643 (-516)
35K → 23M
14:22 | 11:28/mi
24M
3:36:32
Rank: #19905 (-262)
23M → 24M
10:44 | 10:44/mi
40K· 24.85 mi
3:46:13
Rank: #20176 (-271)
24M → 40K
9:41 | 11:20/mi
25.2M
3:50:56
Rank: #20382 (-206)
40K → 25.2M
4:43 | 13:41/mi
Finish· 26.22 mi
4:01:55
Rank: #20627 (-245)
25.2M → Finish
10:59 | 10:47/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
Time1:50:08
Pace8:24 /mi
2nd Half
Distance13.11 mi
Time2:11:47
Pace10:03 /mi
📊Positive Split: 19.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:4728:499:1728:49
9:17
-
10K
6.21 mi12:11:3454:368:4725:47
8:18
-0:59
15K
9.32 mi12:36:201:19:228:3124:46
7:58
-0:20
20K
12.43 mi13:01:421:44:448:2625:22
8:10
+0:12
Half
13.11 mi13:07:061:50:088:245:24
7:55
-0:15
25K
15.53 mi13:27:102:10:128:2320:04
8:17
+0:22
30K
18.64 mi13:55:342:38:368:3028:24
9:08
+0:51
20M
20.00 mi14:09:142:52:168:3713:40
10:03
+0:55
21M
21.00 mi14:19:083:02:108:409:54
9:54
-0:09
35K
21.75 mi14:28:243:11:268:489:16
12:23
+2:29
23M
23.00 mi14:42:463:25:488:5714:22
11:28
-0:55
24M
24.00 mi14:53:303:36:329:0110:44
10:44
-0:44
40K
24.85 mi15:03:113:46:139:069:41
11:20
+0:36
25.2M
25.20 mi15:07:543:50:569:104:43
13:41
+2:21
Finish
26.22 mi15:18:534:01:559:1410:59
10:47
-2:54

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

7:55 /mi

Average Pace

9:14 /mi

Slowest Pace

13:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:41:23

42% of race

Time at Steady Pace

1:31:31

38% of race

Time at Slower Pace

49:01

20% of race

Average Pace: 9:14 /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 mi11:45:4728:499:1728:49
9:17
#23473
10K
6.21 mi12:11:3454:368:4725:47
8:18
#21380
15K
9.32 mi12:36:201:19:228:3124:46
7:58
#19765
20K
12.43 mi13:01:421:44:448:2625:22
8:10
#18815
Half
13.11 mi13:07:061:50:088:245:24
7:55
#18650
25K
15.53 mi13:27:102:10:128:2320:04
8:17
#18143
30K
18.64 mi13:55:342:38:368:3028:24
9:08
#18182
20M
20.00 mi14:09:142:52:168:3713:40
10:03
#18512
21M
21.00 mi14:19:083:02:108:409:54
9:54
#18449
35K
21.75 mi14:28:243:11:268:489:16
12:23
#19127
23M
23.00 mi14:42:463:25:488:5714:22
11:28
#19643
24M
24.00 mi14:53:303:36:329:0110:44
10:44
#19905
40K
24.85 mi15:03:113:46:139:069:41
11:20
#20176
25.2M
25.20 mi15:07:543:50:569:104:43
13:41
#20382
Finish
26.22 mi15:18:534:01:559:1410:59
10:47
#20627
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi23473139861398615819(Top 56%)10724(Top 67%)10724(Top 190%)
10K6.21 mi3.10 mi21380+209313059+92713059+92718542(Top 65%)11870(Top 74%)11870(Top 210%)
15K9.32 mi3.11 mi19765+161512380+67912380+67915819(Top 56%)10724(Top 67%)10724(Top 190%)
20K12.43 mi3.11 mi18815+95011962+41811962+41816083(Top 57%)10774(Top 67%)10774(Top 191%)
Half13.11 mi0.68 mi18650+16511892+7011892+7015207(Top 54%)10453(Top 65%)10453(Top 185%)
25K15.53 mi2.42 mi18143+50711652+24011652+24015765(Top 56%)10552(Top 66%)10552(Top 187%)
30K18.64 mi3.11 mi18182-3911635+1711635+1718360(Top 65%)11548(Top 72%)11548(Top 205%)
20M20.00 mi1.36 mi18512-33011763-12811763-12821135(Top 74%)12647(Top 79%)12647(Top 224%)
21M21.00 mi1.00 mi18449+6311701+6211701+6217897(Top 63%)11118(Top 69%)11118(Top 197%)
35K21.75 mi0.75 mi19127-67811988-28711988-28726340(Top 93%)15009(Top 93%)15009(Top 266%)
23M23.00 mi1.25 mi19643-51612167-17912167-17924200(Top 85%)13940(Top 87%)13940(Top 247%)
24M24.00 mi1.00 mi19905-26212254-8712254-8723391(Top 82%)13507(Top 84%)13507(Top 239%)
40K24.85 mi0.85 mi20176-27112365-11112365-11123805(Top 84%)13665(Top 85%)13665(Top 242%)
25.2M25.20 mi0.35 mi20382-20612463-9812463-9825889(Top 91%)14688(Top 91%)14688(Top 260%)
Finish26.22 mi1.02 mi20627-24512559-9612559-9624895(Top 88%)14220(Top 88%)14220(Top 252%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 56%
×21stories
+97ft-345ft

Overall

15819

Males

10724

M18-39

10724

5K→10K

3.1 - 6.2 mi

Top 65%
×5stories
+79ft-138ft

Overall

18542

Males

11870

M18-39

11870

10K→15K

6.2 - 9.3 mi

Top 56%
×3stories
+67ft-78ft

Overall

15819

Males

10724

M18-39

10724

15K→20K

9.3 - 12.4 mi

Top 57%
×5stories
+106ft-86ft

Overall

16083

Males

10774

M18-39

10774

20K→Half

12.4 - 13.1 mi

Top 54%
×2stories
+19ft-37ft

Overall

15207

Males

10453

M18-39

10453

Half→25K

13.1 - 15.5 mi

Top 56%
×4stories
+66ft-88ft

Overall

15765

Males

10552

M18-39

10552

25K→30K

15.5 - 18.6 mi

Top 65%
×9stories
+181ft-148ft

Overall

18360

Males

11548

M18-39

11548

30K→20M

18.6 - 20.0 mi

Top 74%
×5stories
+64ft-50ft

Overall

21135

Males

12647

M18-39

12647

20M→21M

20.0 - 21.0 mi

Top 63%
×8stories
+106ft-24ft

Overall

17897

Males

11118

M18-39

11118

21M→35K

21.0 - 21.8 mi

Top 93%
×7stories
+17ft-86ft

Overall

26340

Males

15009

M18-39

15009

35K→23M

21.8 - 23.0 mi

Top 85%
×5stories
+23ft-63ft

Overall

24200

Males

13940

M18-39

13940

23M→24M

23.0 - 24.0 mi

Top 82%
×6stories
+12ft-82ft

Overall

23391

Males

13507

M18-39

13507

24M→40K

24.0 - 24.9 mi

Top 84%
×1story
+6ft-20ft

Overall

23805

Males

13665

M18-39

13665

40K→25.2M

24.9 - 25.2 mi

Top 91%
×1story
+13ft-16ft

Overall

25889

Males

14688

M18-39

14688

25.2M→Finish

25.2 - 26.2 mi

Top 88%
×2stories
+22ft-21ft

Overall

24895

Males

14220

M18-39

14220

Passing Analysis

Category:
Athletes Passed
5823
Passed By
2977
Net Change
+2846
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23473
5K → 10K20952+2093#23473#21380
10K → 15K16150+1615#21380#19765
15K → 20K9544+950#19765#18815
20K → Half1672+165#18815#18650
Half → 25K5136+507#18650#18143
25K → 30K230269-39#18143#18182
30K → 20M45375-330#18182#18512
20M → 21M13168+63#18512#18449
21M → 35K8686-678#18449#19127
35K → 23M17533-516#19127#19643
23M → 24M20282-262#19643#19905
24M → 40K14285-271#19905#20176
40K → 25.2M4210-206#20176#20382
25.2M → Finish10255-245#20382#20627
TOTALS58232977+2846
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

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