Boston Marathon logo
BOSTON MARATHON 2025

Matthew Lasota

Bib: 27168•M

IL

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

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
8:45/mi
27:12
↑ 97↓ 3451.5%
10K· 6.21 mi
8:18/mi
52:59
↑ 79↓ 1380.4%
15K· 9.32 mi
8:21/mi
1:18:56
↑ 67↓ 78
20K· 12.43 mi
8:51/mi
1:46:25
↑ 106↓ 860.1%
Half· 13.11 mi
8:21/mi
1:52:07
↑ 19↓ 370.5%
25K· 15.53 mi
9:35/mi
2:15:22
↑ 66↓ 880.2%
30K· 18.64 mi
10:27/mi
2:47:50
↑ 181↓ 1480.2%
20M
10:33/mi
3:02:10
↑ 64↓ 500.2%
21M
12:45/mi
3:14:55
↑ 106↓ 241.6%
35K· 21.75 mi
9:27/mi
3:21:59
↑ 17↓ 861.7%
23M
10:39/mi
3:35:19
↑ 23↓ 630.6%
24M
10:38/mi
3:45:57
↓ 821.3%
40K· 24.85 mi
10:55/mi
3:55:17
↓ 200.3%
25.2M
12:57/mi
3:59:45
↑ 13↓ 160.2%
Finish· 26.22 mi
10:06/mi
4:10:03
↑ 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
Time1:52:07
Pace8:33 /mi
2nd Half
Distance13.11 mi
Time2:17:56
Pace10:31 /mi
📊Positive Split: 23.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:43:3227:128:4527:12
8:45
-
10K
6.21 mi12:09:1952:598:3225:47
8:18
-0:27
15K
9.32 mi12:35:161:18:568:2825:57
8:21
+0:03
20K
12.43 mi13:02:451:46:258:3427:29
8:51
+0:30
Half
13.11 mi13:08:271:52:078:335:42
8:21
-0:30
25K
15.53 mi13:31:422:15:228:4323:15
9:35
+1:14
30K
18.64 mi14:04:102:47:509:0032:28
10:27
+0:52
20M
20.00 mi14:18:303:02:109:0614:20
10:33
+0:06
21M
21.00 mi14:31:153:14:559:1712:45
12:45
+2:12
35K
21.75 mi14:38:193:21:599:177:04
9:27
-3:18
23M
23.00 mi14:51:393:35:199:2213:20
10:39
+1:12
24M
24.00 mi15:02:173:45:579:2510:38
10:38
-0:01
40K
24.85 mi15:11:373:55:179:289:20
10:55
+0:17
25.2M
25.20 mi15:16:053:59:459:314:28
12:57
+2:02
Finish
26.22 mi15:26:234:10:039:3310:18
10:06
-2:51

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

8:18 /mi

Average Pace

9:33 /mi

Slowest Pace

12:57 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:52:07

45% of race

Time at Steady Pace

1:51:23

45% of race

Time at Slower Pace

26:33

11% of race

Average Pace: 9:32 /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 mi11:43:3227:128:4527:12
8:45
#21273
10K
6.21 mi12:09:1952:598:3225:47
8:18
#19992
15K
9.32 mi12:35:161:18:568:2825:57
8:21
#19475
20K
12.43 mi13:02:451:46:258:3427:29
8:51
#19670
Half
13.11 mi13:08:271:52:078:335:42
8:21
#19599
25K
15.53 mi13:31:422:15:228:4323:15
9:35
#20145
30K
18.64 mi14:04:102:47:509:0032:28
10:27
#20887
20M
20.00 mi14:18:303:02:109:0614:20
10:33
#21063
21M
21.00 mi14:31:153:14:559:1712:45
12:45
#21450
35K
21.75 mi14:38:193:21:599:177:04
9:27
#21406
23M
23.00 mi14:51:393:35:199:2213:20
10:39
#21475
24M
24.00 mi15:02:173:45:579:2510:38
10:38
#21559
40K
24.85 mi15:11:373:55:179:289:20
10:55
#21621
25.2M
25.20 mi15:16:053:59:459:314:28
12:57
#21709
Finish
26.22 mi15:26:234:10:039:3310:18
10:06
#21749
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi21273129851298518391(Top 65%)11792(Top 73%)11792(Top 525%)
10K6.21 mi3.10 mi19992+128112470+51512470+51518545(Top 65%)11873(Top 74%)11873(Top 528%)
15K9.32 mi3.11 mi19475+51712252+21812252+21818391(Top 65%)11792(Top 73%)11792(Top 525%)
20K12.43 mi3.11 mi19670-19512330-7812330-7820185(Top 71%)12550(Top 78%)12550(Top 559%)
Half13.11 mi0.68 mi19599+7112297+3312297+3318289(Top 64%)11767(Top 73%)11767(Top 524%)
25K15.53 mi2.42 mi20145-54612515-21812515-21822149(Top 78%)13356(Top 83%)13356(Top 594%)
30K18.64 mi3.11 mi20887-74212802-28712802-28722814(Top 80%)13532(Top 84%)13532(Top 602%)
20M20.00 mi1.36 mi21063-17612866-6412866-6422558(Top 79%)13310(Top 83%)13310(Top 592%)
21M21.00 mi1.00 mi21450-38713033-16713033-16724731(Top 87%)14243(Top 88%)14243(Top 634%)
35K21.75 mi0.75 mi21406+4412995+3812995+3820139(Top 71%)12042(Top 75%)12042(Top 536%)
23M23.00 mi1.25 mi21475-6913004-913004-922394(Top 79%)13058(Top 81%)13058(Top 581%)
24M24.00 mi1.00 mi21559-8413016-1213016-1223146(Top 81%)13377(Top 83%)13377(Top 595%)
40K24.85 mi0.85 mi21621-6213019-313019-322941(Top 81%)13210(Top 82%)13210(Top 588%)
25.2M25.20 mi0.35 mi21709-8813039-2013039-2024950(Top 88%)14222(Top 88%)14222(Top 633%)
Finish26.22 mi1.02 mi21749-4013051-1213051-1223228(Top 82%)13387(Top 83%)13387(Top 596%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 65%
×21story building
+97ft-345ft

Overall

18391

Males

11792

M40-44

11792

5K→10K

3.1 - 6.2 mi

Top 65%
×5story building
+79ft-138ft

Overall

18545

Males

11873

M40-44

11873

10K→15K

6.2 - 9.3 mi

Top 65%
×3story building
+67ft-78ft

Overall

18391

Males

11792

M40-44

11792

15K→20K

9.3 - 12.4 mi

Top 71%
×5story building
+106ft-86ft

Overall

20185

Males

12550

M40-44

12550

20K→Half

12.4 - 13.1 mi

Top 64%
×2story building
+19ft-37ft

Overall

18289

Males

11767

M40-44

11767

Half→25K

13.1 - 15.5 mi

Top 78%
×4story building
+66ft-88ft

Overall

22149

Males

13356

M40-44

13356

25K→30K

15.5 - 18.6 mi

Top 80%
×9story building
+181ft-148ft

Overall

22814

Males

13532

M40-44

13532

30K→20M

18.6 - 20.0 mi

Top 79%
×5story building
+64ft-50ft

Overall

22558

Males

13310

M40-44

13310

20M→21M

20.0 - 21.0 mi

Top 87%
×8story building
+106ft-24ft

Overall

24731

Males

14243

M40-44

14243

21M→35K

21.0 - 21.8 mi

Top 71%
×7story building
+17ft-86ft

Overall

20139

Males

12042

M40-44

12042

35K→23M

21.8 - 23.0 mi

Top 79%
×5story building
+23ft-63ft

Overall

22394

Males

13058

M40-44

13058

23M→24M

23.0 - 24.0 mi

Top 81%
×6story building
+12ft-82ft

Overall

23146

Males

13377

M40-44

13377

24M→40K

24.0 - 24.9 mi

Top 81%
×1story
+6ft-20ft

Overall

22941

Males

13210

M40-44

13210

40K→25.2M

24.9 - 25.2 mi

Top 88%
×1story
+13ft-16ft

Overall

24950

Males

14222

M40-44

14222

25.2M→Finish

25.2 - 26.2 mi

Top 82%
×2story building
+22ft-21ft

Overall

23228

Males

13387

M40-44

13387

Passing Analysis

Category:
Athletes Passed
2517
Passed By
2993
Net Change
-476
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21273
5K → 10K131332+1281#21273#19992
10K → 15K54124+517#19992#19475
15K → 20K143338-195#19475#19670
20K → Half8110+71#19670#19599
Half → 25K42588-546#19599#20145
25K → 30K73815-742#20145#20887
30K → 20M52228-176#20887#21063
20M → 21M21408-387#21063#21450
21M → 35K7531+44#21450#21406
35K → 23M71140-69#21406#21475
23M → 24M32116-84#21475#21559
24M → 40K38100-62#21559#21621
40K → 25.2M593-88#21621#21709
25.2M → Finish3070-40#21709#21749
TOTALS25172993-476
📊

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
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing