Boston Marathon logo
BOSTON MARATHON 2025

Matthew Forster

Bib: 7309•M

ID

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 43%
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
20:53
Rank: #5653
Start → 5K
6:43/mi
20:53 split
10K· 6.21 mi
42:45
Rank: #7012 (-1359)
5K → 10K
7:02/mi
21:52 split
15K· 9.32 mi
1:05:00
Rank: #7587 (-575)
10K → 15K
7:10/mi
22:15 split
20K· 12.43 mi
1:27:42
Rank: #7877 (-290)
15K → 20K
7:18/mi
22:42 split
Half· 13.11 mi
1:32:29
Rank: #7859 (+18)
20K → Half
7:01/mi
4:47 split
25K· 15.53 mi
1:51:10
Rank: #8334 (-475)
Half → 25K
7:42/mi
18:41 split
30K· 18.64 mi
2:16:29
Rank: #9028 (-694)
25K → 30K
8:09/mi
25:19 split
20M
2:27:31
Rank: #9192 (-164)
30K → 20M
8:07/mi
11:02 split
21M
2:36:14
Rank: #9310 (-118)
20M → 21M
8:43/mi
8:43 split
35K· 21.75 mi
2:42:42
Rank: #9579 (-269)
21M → 35K
8:39/mi
6:28 split
23M
2:56:03
Rank: #10773 (-1194)
35K → 23M
10:40/mi
13:21 split
24M
3:05:57
Rank: #11393 (-620)
23M → 24M
9:54/mi
9:54 split
40K· 24.85 mi
3:14:01
Rank: #11740 (-347)
24M → 40K
9:26/mi
8:04 split
25.2M
3:17:33
Rank: #11884 (-144)
40K → 25.2M
10:15/mi
3:32 split
Finish· 26.22 mi
3:26:59
Rank: #12271 (-387)
25.2M → Finish
9:15/mi
9:26 split

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
Time1:32:29
Pace7:03 /mi
2nd Half
Distance13.11 mi
Time1:54:30
Pace8:44 /mi
📊Positive Split: 23.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:27:3420:536:4320:53
6:43
-
10K
6.21 mi10:49:2642:456:5321:52
7:02
+0:19
15K
9.32 mi11:11:411:05:006:5822:15
7:10
+0:08
20K
12.43 mi11:34:231:27:427:0322:42
7:18
+0:08
Half
13.11 mi11:39:101:32:297:034:47
7:01
-0:17
25K
15.53 mi11:57:511:51:107:0918:41
7:42
+0:41
30K
18.64 mi12:23:102:16:297:1925:19
8:09
+0:27
20M
20.00 mi12:34:122:27:317:2311:02
8:07
-0:02
21M
21.00 mi12:42:552:36:147:268:43
8:43
+0:36
35K
21.75 mi12:49:232:42:427:296:28
8:39
-0:04
23M
23.00 mi13:02:442:56:037:3913:21
10:40
+2:01
24M
24.00 mi13:12:383:05:577:459:54
9:54
-0:46
40K
24.85 mi13:20:423:14:017:488:04
9:26
-0:28
25.2M
25.20 mi13:24:143:17:337:503:32
10:15
+0:49
Finish
26.22 mi13:33:403:26:597:549:26
9:15
-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

6:43 /mi

Average Pace

7:54 /mi

Slowest Pace

10:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:32:29

45% of race

Time at Steady Pace

1:10:13

34% of race

Time at Slower Pace

44:17

21% of race

Average Pace: 7:54 /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 mi10:27:3420:536:4320:53
6:43
#5653
10K
6.21 mi10:49:2642:456:5321:52
7:02
#7012
15K
9.32 mi11:11:411:05:006:5822:15
7:10
#7587
20K
12.43 mi11:34:231:27:427:0322:42
7:18
#7877
Half
13.11 mi11:39:101:32:297:034:47
7:01
#7859
25K
15.53 mi11:57:511:51:107:0918:41
7:42
#8334
30K
18.64 mi12:23:102:16:297:1925:19
8:09
#9028
20M
20.00 mi12:34:122:27:317:2311:02
8:07
#9192
21M
21.00 mi12:42:552:36:147:268:43
8:43
#9310
35K
21.75 mi12:49:232:42:427:296:28
8:39
#9579
23M
23.00 mi13:02:442:56:037:3913:21
10:40
#10773
24M
24.00 mi13:12:383:05:577:459:54
9:54
#11393
40K
24.85 mi13:20:423:14:017:488:04
9:26
#11740
25.2M
25.20 mi13:24:143:17:337:503:32
10:15
#11884
Finish
26.22 mi13:33:403:26:597:549:26
9:15
#12271
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5653522952298798(Top 31%)7438(Top 46%)7438(Top 132%)
10K6.21 mi3.10 mi7012-13596302-10736302-10738210(Top 29%)7114(Top 44%)7114(Top 126%)
15K9.32 mi3.11 mi7587-5756699-3976699-3978798(Top 31%)7438(Top 46%)7438(Top 132%)
20K12.43 mi3.11 mi7877-2906877-1786877-1789093(Top 32%)7508(Top 47%)7508(Top 133%)
Half13.11 mi0.68 mi7859+186862+156862+157693(Top 27%)6714(Top 42%)6714(Top 119%)
25K15.53 mi2.42 mi8334-4757132-2707132-27011580(Top 41%)8659(Top 54%)8659(Top 153%)
30K18.64 mi3.11 mi9028-6947479-3477479-34712419(Top 44%)8874(Top 55%)8874(Top 157%)
20M20.00 mi1.36 mi9192-1647547-687547-6811234(Top 40%)8153(Top 51%)8153(Top 145%)
21M21.00 mi1.00 mi9310-1187572-257572-2511769(Top 41%)8261(Top 51%)8261(Top 146%)
35K21.75 mi0.75 mi9579-2697706-1347706-13416271(Top 57%)10280(Top 64%)10280(Top 182%)
23M23.00 mi1.25 mi10773-11948251-5458251-54522422(Top 79%)13065(Top 81%)13065(Top 232%)
24M24.00 mi1.00 mi11393-6208509-2588509-25821039(Top 74%)12355(Top 77%)12355(Top 219%)
40K24.85 mi0.85 mi11740-3478646-1378646-13718404(Top 65%)11011(Top 68%)11011(Top 195%)
25.2M25.20 mi0.35 mi11884-1448690-448690-4417998(Top 63%)10798(Top 67%)10798(Top 191%)
Finish26.22 mi1.02 mi12271-3878848-1588848-15820177(Top 71%)11875(Top 74%)11875(Top 210%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 31%
×21stories
+97ft-345ft

Overall

8798

Males

7438

M18-39

7438

5K→10K

3.1 - 6.2 mi

Top 29%
×5stories
+79ft-138ft

Overall

8210

Males

7114

M18-39

7114

10K→15K

6.2 - 9.3 mi

Top 31%
×3stories
+67ft-78ft

Overall

8798

Males

7438

M18-39

7438

15K→20K

9.3 - 12.4 mi

Top 32%
×5stories
+106ft-86ft

Overall

9093

Males

7508

M18-39

7508

20K→Half

12.4 - 13.1 mi

Top 27%
×2stories
+19ft-37ft

Overall

7693

Males

6714

M18-39

6714

Half→25K

13.1 - 15.5 mi

Top 41%
×4stories
+66ft-88ft

Overall

11580

Males

8659

M18-39

8659

25K→30K

15.5 - 18.6 mi

Top 44%
×9stories
+181ft-148ft

Overall

12419

Males

8874

M18-39

8874

30K→20M

18.6 - 20.0 mi

Top 40%
×5stories
+64ft-50ft

Overall

11234

Males

8153

M18-39

8153

20M→21M

20.0 - 21.0 mi

Top 41%
×8stories
+106ft-24ft

Overall

11769

Males

8261

M18-39

8261

21M→35K

21.0 - 21.8 mi

Top 57%
×7stories
+17ft-86ft

Overall

16271

Males

10280

M18-39

10280

35K→23M

21.8 - 23.0 mi

Top 79%
×5stories
+23ft-63ft

Overall

22422

Males

13065

M18-39

13065

23M→24M

23.0 - 24.0 mi

Top 74%
×6stories
+12ft-82ft

Overall

21039

Males

12355

M18-39

12355

24M→40K

24.0 - 24.9 mi

Top 65%
×1story
+6ft-20ft

Overall

18404

Males

11011

M18-39

11011

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1story
+13ft-16ft

Overall

17998

Males

10798

M18-39

10798

25.2M→Finish

25.2 - 26.2 mi

Top 71%
×2stories
+22ft-21ft

Overall

20177

Males

11875

M18-39

11875

Passing Analysis

Category:
Athletes Passed
461
Passed By
7077
Net Change
-6618
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5653
5K → 10K161375-1359#5653#7012
10K → 15K33608-575#7012#7587
15K → 20K59349-290#7587#7877
20K → Half3618+18#7877#7859
Half → 25K35510-475#7859#8334
25K → 30K80774-694#8334#9028
30K → 20M57221-164#9028#9192
20M → 21M63181-118#9192#9310
21M → 35K21290-269#9310#9579
35K → 23M61198-1194#9579#10773
23M → 24M14634-620#10773#11393
24M → 40K18365-347#11393#11740
40K → 25.2M13157-144#11740#11884
25.2M → Finish10397-387#11884#12271
TOTALS4617077-6618
📊

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