Boston Marathon logo
BOSTON MARATHON 2025

Will Mroz

Bib: 5774•M

CA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Top 11%
Gender (Male)
#0 / 16105
Top 18%
Masters (Masters Men)
#0 / 10463
Top 6%
Division (M40-44)
#0 / 2247
Top 18%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:37
Rank: #2513
Start → 5K
19:37 | 6:19/mi
10K· 6.21 mi
39:43
Rank: #3000 (-487)
5K → 10K
20:06 | 6:28/mi
15K· 9.32 mi
59:32
Rank: #2908 (+92)
10K → 15K
19:49 | 6:23/mi
20K· 12.43 mi
1:19:28
Rank: #2819 (+89)
15K → 20K
19:56 | 6:25/mi
Half· 13.11 mi
1:23:44
Rank: #2790 (+29)
20K → Half
4:16 | 6:15/mi
25K· 15.53 mi
1:39:34
Rank: #2795 (-5)
Half → 25K
15:50 | 6:32/mi
30K· 18.64 mi
2:00:56
Rank: #2959 (-164)
25K → 30K
21:22 | 6:53/mi
20M
2:10:24
Rank: #2991 (-32)
30K → 20M
9:28 | 6:58/mi
21M
2:17:59
Rank: #3060 (-69)
20M → 21M
7:35 | 7:35/mi
35K· 21.75 mi
2:23:04
Rank: #3062 (-2)
21M → 35K
5:05 | 6:48/mi
23M
2:31:55
Rank: #3072 (-10)
35K → 23M
8:51 | 7:04/mi
24M
2:38:53
Rank: #3096 (-24)
23M → 24M
6:58 | 6:58/mi
40K· 24.85 mi
2:44:58
Rank: #3107 (-11)
24M → 40K
6:05 | 7:07/mi
25.2M
2:47:38
Rank: #3100 (+7)
40K → 25.2M
2:40 | 7:44/mi
Finish· 26.22 mi
2:54:30
Rank: #3119 (-19)
25.2M → Finish
6:52 | 6:44/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
Time1:23:44
Pace6:23 /mi
2nd Half
Distance13.11 mi
Time1:30:46
Pace6:55 /mi
📊Positive Split: 8.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:26:3819:376:1919:37
6:19
-
10K
6.21 mi10:46:4439:436:2420:06
6:28
+0:09
15K
9.32 mi11:06:3359:326:2319:49
6:23
-0:05
20K
12.43 mi11:26:291:19:286:2419:56
6:25
+0:02
Half
13.11 mi11:30:451:23:446:234:16
6:15
-0:10
25K
15.53 mi11:46:351:39:346:2515:50
6:32
+0:17
30K
18.64 mi12:07:572:00:566:2921:22
6:53
+0:21
20M
20.00 mi12:17:252:10:246:319:28
6:58
+0:05
21M
21.00 mi12:25:002:17:596:347:35
7:35
+0:37
35K
21.75 mi12:30:052:23:046:355:05
6:48
-0:47
23M
23.00 mi12:38:562:31:556:368:51
7:04
+0:16
24M
24.00 mi12:45:542:38:536:376:58
6:58
-0:06
40K
24.85 mi12:51:592:44:586:386:05
7:07
+0:09
25.2M
25.20 mi12:54:392:47:386:392:40
7:44
+0:37
Finish
26.22 mi13:01:312:54:306:406:52
6:44
-1:00

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

6:15 /mi

Average Pace

6:40 /mi

Slowest Pace

7:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:39:34

57% of race

Time at Steady Pace

49:45

29% of race

Time at Slower Pace

25:11

14% of race

Average Pace: 6:39 /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 mi10:26:3819:376:1919:37
6:19
#2513
10K
6.21 mi10:46:4439:436:2420:06
6:28
#3000
15K
9.32 mi11:06:3359:326:2319:49
6:23
#2908
20K
12.43 mi11:26:291:19:286:2419:56
6:25
#2819
Half
13.11 mi11:30:451:23:446:234:16
6:15
#2790
25K
15.53 mi11:46:351:39:346:2515:50
6:32
#2795
30K
18.64 mi12:07:572:00:566:2921:22
6:53
#2959
20M
20.00 mi12:17:252:10:246:319:28
6:58
#2991
21M
21.00 mi12:25:002:17:596:347:35
7:35
#3060
35K
21.75 mi12:30:052:23:046:355:05
6:48
#3062
23M
23.00 mi12:38:562:31:556:368:51
7:04
#3072
24M
24.00 mi12:45:542:38:536:376:58
6:58
#3096
40K
24.85 mi12:51:592:44:586:386:05
7:07
#3107
25.2M
25.20 mi12:54:392:47:386:392:40
7:44
#3100
Finish
26.22 mi13:01:312:54:306:406:52
6:44
#3119
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi2513239423942794(Top 10%)2660(Top 17%)2660(Top 118%)
10K6.21 mi3.10 mi3000-4872854-4602854-4603506(Top 12%)3321(Top 21%)3321(Top 148%)
15K9.32 mi3.11 mi2908+922772+822772+822794(Top 10%)2660(Top 17%)2660(Top 118%)
20K12.43 mi3.11 mi2819+892689+832689+832611(Top 9%)2488(Top 15%)2488(Top 111%)
Half13.11 mi0.68 mi2790+292660+292660+292248(Top 8%)2149(Top 13%)2149(Top 96%)
25K15.53 mi2.42 mi2795-52666-62666-63046(Top 11%)2891(Top 18%)2891(Top 129%)
30K18.64 mi3.11 mi2959-1642819-1532819-1533920(Top 14%)3609(Top 22%)3609(Top 161%)
20M20.00 mi1.36 mi2991-322844-252844-253869(Top 14%)3552(Top 22%)3552(Top 158%)
21M21.00 mi1.00 mi3060-692898-542898-544988(Top 18%)4355(Top 27%)4355(Top 194%)
35K21.75 mi0.75 mi3062-22899-12899-14029(Top 14%)3604(Top 22%)3604(Top 160%)
23M23.00 mi1.25 mi3072-102905-62905-64126(Top 15%)3670(Top 23%)3670(Top 163%)
24M24.00 mi1.00 mi3096-242923-182923-184418(Top 16%)3839(Top 24%)3839(Top 171%)
40K24.85 mi0.85 mi3107-112931-82931-84526(Top 16%)3858(Top 24%)3858(Top 172%)
25.2M25.20 mi0.35 mi3100+72922+92922+94420(Top 16%)3698(Top 23%)3698(Top 165%)
Finish26.22 mi1.02 mi3119-192939-172939-174093(Top 14%)3496(Top 22%)3496(Top 156%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 10%
×21stories
+97ft-345ft

Overall

2794

Males

2660

M40-44

2660

5K→10K

3.1 - 6.2 mi

Top 12%
×5stories
+79ft-138ft

Overall

3506

Males

3321

M40-44

3321

10K→15K

6.2 - 9.3 mi

Top 10%
×3stories
+67ft-78ft

Overall

2794

Males

2660

M40-44

2660

15K→20K

9.3 - 12.4 mi

Top 9%
×5stories
+106ft-86ft

Overall

2611

Males

2488

M40-44

2488

20K→Half

12.4 - 13.1 mi

Top 8%
×2stories
+19ft-37ft

Overall

2248

Males

2149

M40-44

2149

Half→25K

13.1 - 15.5 mi

Top 11%
×4stories
+66ft-88ft

Overall

3046

Males

2891

M40-44

2891

25K→30K

15.5 - 18.6 mi

Top 14%
×9stories
+181ft-148ft

Overall

3920

Males

3609

M40-44

3609

30K→20M

18.6 - 20.0 mi

Top 14%
×5stories
+64ft-50ft

Overall

3869

Males

3552

M40-44

3552

20M→21M

20.0 - 21.0 mi

Top 18%
×8stories
+106ft-24ft

Overall

4988

Males

4355

M40-44

4355

21M→35K

21.0 - 21.8 mi

Top 14%
×7stories
+17ft-86ft

Overall

4029

Males

3604

M40-44

3604

35K→23M

21.8 - 23.0 mi

Top 15%
×5stories
+23ft-63ft

Overall

4126

Males

3670

M40-44

3670

23M→24M

23.0 - 24.0 mi

Top 16%
×6stories
+12ft-82ft

Overall

4418

Males

3839

M40-44

3839

24M→40K

24.0 - 24.9 mi

Top 16%
×1story
+6ft-20ft

Overall

4526

Males

3858

M40-44

3858

40K→25.2M

24.9 - 25.2 mi

Top 16%
×1story
+13ft-16ft

Overall

4420

Males

3698

M40-44

3698

25.2M→Finish

25.2 - 26.2 mi

Top 14%
×2stories
+22ft-21ft

Overall

4093

Males

3496

M40-44

3496

Passing Analysis

Category:
Athletes Passed
749
Passed By
1355
Net Change
-606
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2513
5K → 10K21508-487#2513#3000
10K → 15K14149+92#3000#2908
15K → 20K12839+89#2908#2819
20K → Half301+29#2819#2790
Half → 25K6671-5#2790#2795
25K → 30K68232-164#2795#2959
30K → 20M4577-32#2959#2991
20M → 21M2796-69#2991#3060
21M → 35K3234-2#3060#3062
35K → 23M5969-10#3062#3072
23M → 24M3862-24#3072#3096
24M → 40K3344-11#3096#3107
40K → 25.2M2316+7#3107#3100
25.2M → Finish3857-19#3100#3119
TOTALS7491355-606
📊

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