Boston Marathon logo
BOSTON MARATHON 2025

Daniel Jamroz

Bib: 30886•M

MA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M40-44)
#0 / 2247
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
28:47
Rank: #23437
Start → 5K
28:47 | 9:16/mi
10K· 6.21 mi
57:04
Rank: #23152 (+285)
5K → 10K
28:17 | 9:06/mi
15K· 9.32 mi
1:26:59
Rank: #23552 (-400)
10K → 15K
29:55 | 9:38/mi
20K· 12.43 mi
2:00:22
Rank: #24268 (-716)
15K → 20K
33:23 | 10:45/mi
Half· 13.11 mi
2:07:47
Rank: #24395 (-127)
20K → Half
7:25 | 10:52/mi
25K· 15.53 mi
2:35:08
Rank: #24689 (-294)
Half → 25K
27:21 | 11:17/mi
30K· 18.64 mi
3:14:35
Rank: #25111 (-422)
25K → 30K
39:27 | 12:42/mi
20M
3:32:01
Rank: #25244 (-133)
30K → 20M
17:26 | 12:50/mi
21M
3:44:56
Rank: #25250 (-6)
20M → 21M
12:55 | 12:55/mi
35K· 21.75 mi
3:54:23
Rank: #25302 (-52)
21M → 35K
9:27 | 12:38/mi
23M
4:09:17
Rank: #25304 (-2)
35K → 23M
14:54 | 11:54/mi
24M
4:21:44
Rank: #25338 (-34)
23M → 24M
12:27 | 12:27/mi
40K· 24.85 mi
4:32:28
Rank: #25368 (-30)
24M → 40K
10:44 | 12:33/mi
25.2M
4:37:07
Rank: #25380 (-12)
40K → 25.2M
4:39 | 13:29/mi
Finish· 26.22 mi
4:49:12
Rank: #25450 (-70)
25.2M → Finish
12:05 | 11:51/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
Time2:07:47
Pace9:45 /mi
2nd Half
Distance13.11 mi
Time2:41:25
Pace12:19 /mi
📊Positive Split: 26.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:1128:479:1628:47
9:16
-
10K
6.21 mi12:18:2857:049:1128:17
9:06
-0:10
15K
9.32 mi12:48:231:26:599:2029:55
9:38
+0:32
20K
12.43 mi13:21:462:00:229:4133:23
10:45
+1:07
Half
13.11 mi13:29:112:07:479:457:25
10:52
+0:07
25K
15.53 mi13:56:322:35:089:5927:21
11:17
+0:25
30K
18.64 mi14:35:593:14:3510:2639:27
12:42
+1:25
20M
20.00 mi14:53:253:32:0110:3617:26
12:50
+0:08
21M
21.00 mi15:06:203:44:5610:4312:55
12:55
+0:05
35K
21.75 mi15:15:473:54:2310:479:27
12:38
-0:17
23M
23.00 mi15:30:414:09:1710:5014:54
11:54
-0:44
24M
24.00 mi15:43:084:21:4410:5412:27
12:27
+0:33
40K
24.85 mi15:53:524:32:2810:5810:44
12:33
+0:06
25.2M
25.20 mi15:58:314:37:0711:004:39
13:29
+0:56
Finish
26.22 mi16:10:364:49:1211:0212:05
11:51
-1:38

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

9:06 /mi

Average Pace

11:02 /mi

Slowest Pace

13:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:07:47

44% of race

Time at Steady Pace

1:17:31

27% of race

Time at Slower Pace

1:23:54

29% of race

Average Pace: 11:02 /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 mi11:50:1128:479:1628:47
9:16
#23437
10K
6.21 mi12:18:2857:049:1128:17
9:06
#23152
15K
9.32 mi12:48:231:26:599:2029:55
9:38
#23552
20K
12.43 mi13:21:462:00:229:4133:23
10:45
#24268
Half
13.11 mi13:29:112:07:479:457:25
10:52
#24395
25K
15.53 mi13:56:322:35:089:5927:21
11:17
#24689
30K
18.64 mi14:35:593:14:3510:2639:27
12:42
#25111
20M
20.00 mi14:53:253:32:0110:3617:26
12:50
#25244
21M
21.00 mi15:06:203:44:5610:4312:55
12:55
#25250
35K
21.75 mi15:15:473:54:2310:479:27
12:38
#25302
23M
23.00 mi15:30:414:09:1710:5014:54
11:54
#25304
24M
24.00 mi15:43:084:21:4410:5412:27
12:27
#25338
40K
24.85 mi15:53:524:32:2810:5810:44
12:33
#25368
25.2M
25.20 mi15:58:314:37:0711:004:39
13:29
#25380
Finish
26.22 mi16:10:364:49:1211:0212:05
11:51
#25450
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi23437139711397124098(Top 85%)14311(Top 89%)14311(Top 637%)
10K6.21 mi3.10 mi23152+28513861+11013861+11022835(Top 80%)13740(Top 85%)13740(Top 611%)
15K9.32 mi3.11 mi23552-40014053-19214053-19224098(Top 85%)14311(Top 89%)14311(Top 637%)
20K12.43 mi3.11 mi24268-71614363-31014363-31025616(Top 90%)14953(Top 93%)14953(Top 665%)
Half13.11 mi0.68 mi24395-12714418-5514418-5526344(Top 93%)15250(Top 95%)15250(Top 679%)
25K15.53 mi2.42 mi24689-29414543-12514543-12525586(Top 90%)14895(Top 92%)14895(Top 663%)
30K18.64 mi3.11 mi25111-42214703-16014703-16026372(Top 93%)15147(Top 94%)15147(Top 674%)
20M20.00 mi1.36 mi25244-13314745-4214745-4226282(Top 93%)15059(Top 94%)15059(Top 670%)
21M21.00 mi1.00 mi25250-614735+1014735+1024944(Top 88%)14341(Top 89%)14341(Top 638%)
35K21.75 mi0.75 mi25302-5214751-1614751-1626602(Top 94%)15140(Top 94%)15140(Top 674%)
23M23.00 mi1.25 mi25304-214744+714744+724968(Top 88%)14321(Top 89%)14321(Top 637%)
24M24.00 mi1.00 mi25338-3414749-514749-526253(Top 92%)14943(Top 93%)14943(Top 665%)
40K24.85 mi0.85 mi25368-3014757-814757-825733(Top 91%)14656(Top 91%)14656(Top 652%)
25.2M25.20 mi0.35 mi25380-12147571475725656(Top 90%)14570(Top 90%)14570(Top 648%)
Finish26.22 mi1.02 mi25450-7014781-2414781-2426631(Top 94%)15116(Top 94%)15116(Top 673%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 85%
×21stories
+97ft-345ft

Overall

24098

Males

14311

M40-44

14311

5K→10K

3.1 - 6.2 mi

Top 80%
×5stories
+79ft-138ft

Overall

22835

Males

13740

M40-44

13740

10K→15K

6.2 - 9.3 mi

Top 85%
×3stories
+67ft-78ft

Overall

24098

Males

14311

M40-44

14311

15K→20K

9.3 - 12.4 mi

Top 90%
×5stories
+106ft-86ft

Overall

25616

Males

14953

M40-44

14953

20K→Half

12.4 - 13.1 mi

Top 93%
×2stories
+19ft-37ft

Overall

26344

Males

15250

M40-44

15250

Half→25K

13.1 - 15.5 mi

Top 90%
×4stories
+66ft-88ft

Overall

25586

Males

14895

M40-44

14895

25K→30K

15.5 - 18.6 mi

Top 93%
×9stories
+181ft-148ft

Overall

26372

Males

15147

M40-44

15147

30K→20M

18.6 - 20.0 mi

Top 93%
×5stories
+64ft-50ft

Overall

26282

Males

15059

M40-44

15059

20M→21M

20.0 - 21.0 mi

Top 88%
×8stories
+106ft-24ft

Overall

24944

Males

14341

M40-44

14341

21M→35K

21.0 - 21.8 mi

Top 94%
×7stories
+17ft-86ft

Overall

26602

Males

15140

M40-44

15140

35K→23M

21.8 - 23.0 mi

Top 88%
×5stories
+23ft-63ft

Overall

24968

Males

14321

M40-44

14321

23M→24M

23.0 - 24.0 mi

Top 92%
×6stories
+12ft-82ft

Overall

26253

Males

14943

M40-44

14943

24M→40K

24.0 - 24.9 mi

Top 91%
×1story
+6ft-20ft

Overall

25733

Males

14656

M40-44

14656

40K→25.2M

24.9 - 25.2 mi

Top 90%
×1story
+13ft-16ft

Overall

25656

Males

14570

M40-44

14570

25.2M→Finish

25.2 - 26.2 mi

Top 94%
×2stories
+22ft-21ft

Overall

26631

Males

15116

M40-44

15116

Passing Analysis

Category:
Athletes Passed
750
Passed By
2763
Net Change
-2013
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23437
5K → 10K397112+285#23437#23152
10K → 15K67467-400#23152#23552
15K → 20K19735-716#23552#24268
20K → Half4131-127#24268#24395
Half → 25K35329-294#24395#24689
25K → 30K35457-422#24689#25111
30K → 20M23156-133#25111#25244
20M → 21M4349-6#25244#25250
21M → 35K1567-52#25250#25302
35K → 23M3840-2#25302#25304
23M → 24M2660-34#25304#25338
24M → 40K2353-30#25338#25368
40K → 25.2M1123-12#25368#25380
25.2M → Finish1484-70#25380#25450
TOTALS7502763-2013
📊

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