Boston Marathon logo
BOSTON MARATHON 2025

Paul Selfinger

Bib: 29207•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
28:06
Rank: #22605
Start → 5K
9:03/mi
28:06 split
10K· 6.21 mi
54:58
Rank: #21687 (+918)
5K → 10K
8:39/mi
26:52 split
15K· 9.32 mi
1:22:20
Rank: #21451 (+236)
10K → 15K
8:49/mi
27:22 split
20K· 12.43 mi
1:50:14
Rank: #21269 (+182)
15K → 20K
8:59/mi
27:54 split
Half· 13.11 mi
1:56:20
Rank: #21290 (-21)
20K → Half
8:56/mi
6:06 split
25K· 15.53 mi
2:18:09
Rank: #21060 (+230)
Half → 25K
9:00/mi
21:49 split
30K· 18.64 mi
2:46:56
Rank: #20657 (+403)
25K → 30K
9:16/mi
28:47 split
20M
2:59:22
Rank: #20404 (+253)
30K → 20M
9:09/mi
12:26 split
21M
3:08:44
Rank: #20139 (+265)
20M → 21M
9:22/mi
9:22 split
35K· 21.75 mi
3:15:37
Rank: #20088 (+51)
21M → 35K
9:12/mi
6:53 split
23M
3:27:02
Rank: #19923 (+165)
35K → 23M
9:07/mi
11:25 split
24M
3:35:42
Rank: #19729 (+194)
23M → 24M
8:40/mi
8:40 split
40K· 24.85 mi
3:43:04
Rank: #19537 (+192)
24M → 40K
8:37/mi
7:22 split
25.2M
3:46:38
Rank: #19524 (+13)
40K → 25.2M
10:21/mi
3:34 split
Finish· 26.22 mi
3:54:55
Rank: #19315 (+209)
25.2M → Finish
8:08/mi
8:17 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
Time1:56:20
Pace8:52 /mi
2nd Half
Distance13.11 mi
Time1:58:35
Pace9:03 /mi
📊Positive Split: 1.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:4628:069:0328:06
9:03
-
10K
6.21 mi12:13:3854:588:5126:52
8:39
-0:24
15K
9.32 mi12:41:001:22:208:5027:22
8:49
+0:10
20K
12.43 mi13:08:541:50:148:5227:54
8:59
+0:10
Half
13.11 mi13:15:001:56:208:526:06
8:56
-0:03
25K
15.53 mi13:36:492:18:098:5421:49
9:00
+0:04
30K
18.64 mi14:05:362:46:568:5728:47
9:16
+0:16
20M
20.00 mi14:18:022:59:228:5812:26
9:09
-0:07
21M
21.00 mi14:27:243:08:448:599:22
9:22
+0:13
35K
21.75 mi14:34:173:15:379:006:53
9:12
-0:10
23M
23.00 mi14:45:423:27:029:0011:25
9:07
-0:05
24M
24.00 mi14:54:223:35:428:598:40
8:40
-0:27
40K
24.85 mi15:01:443:43:048:587:22
8:37
-0:03
25.2M
25.20 mi15:05:183:46:389:003:34
10:21
+1:44
Finish
26.22 mi15:13:353:54:558:588:17
8:08
-2:13

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

8:08 /mi

Average Pace

8:58 /mi

Slowest Pace

10:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

51:11

22% of race

Time at Steady Pace

2:22:01

60% of race

Time at Slower Pace

41:43

18% of race

Average Pace: 8:58 /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 mi11:46:4628:069:0328:06
9:03
#22605
10K
6.21 mi12:13:3854:588:5126:52
8:39
#21687
15K
9.32 mi12:41:001:22:208:5027:22
8:49
#21451
20K
12.43 mi13:08:541:50:148:5227:54
8:59
#21269
Half
13.11 mi13:15:001:56:208:526:06
8:56
#21290
25K
15.53 mi13:36:492:18:098:5421:49
9:00
#21060
30K
18.64 mi14:05:362:46:568:5728:47
9:16
#20657
20M
20.00 mi14:18:022:59:228:5812:26
9:09
#20404
21M
21.00 mi14:27:243:08:448:599:22
9:22
#20139
35K
21.75 mi14:34:173:15:379:006:53
9:12
#20088
23M
23.00 mi14:45:423:27:029:0011:25
9:07
#19923
24M
24.00 mi14:54:223:35:428:598:40
8:40
#19729
40K
24.85 mi15:01:443:43:048:587:22
8:37
#19537
25.2M
25.20 mi15:05:183:46:389:003:34
10:21
#19524
Finish
26.22 mi15:13:353:54:558:588:17
8:08
#19315
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi22605135801358021051(Top 74%)12958(Top 80%)12958(Top 230%)
10K6.21 mi3.10 mi21687+91813191+38913191+38920580(Top 72%)12731(Top 79%)12731(Top 226%)
15K9.32 mi3.11 mi21451+23613113+7813113+7821051(Top 74%)12958(Top 80%)12958(Top 230%)
20K12.43 mi3.11 mi21269+18213027+8613027+8620848(Top 73%)12819(Top 80%)12819(Top 227%)
Half13.11 mi0.68 mi21290-2113036-913036-921533(Top 76%)13137(Top 82%)13137(Top 233%)
25K15.53 mi2.42 mi21060+23012928+10812928+10819876(Top 70%)12354(Top 77%)12354(Top 219%)
30K18.64 mi3.11 mi20657+40312695+23312695+23318948(Top 67%)11807(Top 73%)11807(Top 209%)
20M20.00 mi1.36 mi20404+25312566+12912566+12917524(Top 62%)11052(Top 69%)11052(Top 196%)
21M21.00 mi1.00 mi20139+26512422+14412422+14415468(Top 54%)9999(Top 62%)9999(Top 177%)
35K21.75 mi0.75 mi20088+5112388+3412388+3419165(Top 67%)11583(Top 72%)11583(Top 205%)
23M23.00 mi1.25 mi19923+16512290+9812290+9816914(Top 60%)10476(Top 65%)10476(Top 186%)
24M24.00 mi1.00 mi19729+19412178+11212178+11215541(Top 55%)9844(Top 61%)9844(Top 174%)
40K24.85 mi0.85 mi19537+19212086+9212086+9214155(Top 50%)9082(Top 56%)9082(Top 161%)
25.2M25.20 mi0.35 mi19524+1312063+2312063+2318426(Top 65%)11034(Top 69%)11034(Top 196%)
Finish26.22 mi1.02 mi19315+20911956+10711956+10713790(Top 49%)8914(Top 55%)8914(Top 158%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 74%
×21stories
+97ft-345ft

Overall

21051

Males

12958

M18-39

12958

5K→10K

3.1 - 6.2 mi

Top 72%
×5stories
+79ft-138ft

Overall

20580

Males

12731

M18-39

12731

10K→15K

6.2 - 9.3 mi

Top 74%
×3stories
+67ft-78ft

Overall

21051

Males

12958

M18-39

12958

15K→20K

9.3 - 12.4 mi

Top 73%
×5stories
+106ft-86ft

Overall

20848

Males

12819

M18-39

12819

20K→Half

12.4 - 13.1 mi

Top 76%
×2stories
+19ft-37ft

Overall

21533

Males

13137

M18-39

13137

Half→25K

13.1 - 15.5 mi

Top 70%
×4stories
+66ft-88ft

Overall

19876

Males

12354

M18-39

12354

25K→30K

15.5 - 18.6 mi

Top 67%
×9stories
+181ft-148ft

Overall

18948

Males

11807

M18-39

11807

30K→20M

18.6 - 20.0 mi

Top 62%
×5stories
+64ft-50ft

Overall

17524

Males

11052

M18-39

11052

20M→21M

20.0 - 21.0 mi

Top 54%
×8stories
+106ft-24ft

Overall

15468

Males

9999

M18-39

9999

21M→35K

21.0 - 21.8 mi

Top 67%
×7stories
+17ft-86ft

Overall

19165

Males

11583

M18-39

11583

35K→23M

21.8 - 23.0 mi

Top 60%
×5stories
+23ft-63ft

Overall

16914

Males

10476

M18-39

10476

23M→24M

23.0 - 24.0 mi

Top 55%
×6stories
+12ft-82ft

Overall

15541

Males

9844

M18-39

9844

24M→40K

24.0 - 24.9 mi

Top 50%
×1story
+6ft-20ft

Overall

14155

Males

9082

M18-39

9082

40K→25.2M

24.9 - 25.2 mi

Top 65%
×1story
+13ft-16ft

Overall

18426

Males

11034

M18-39

11034

25.2M→Finish

25.2 - 26.2 mi

Top 49%
×2stories
+22ft-21ft

Overall

13790

Males

8914

M18-39

8914

Passing Analysis

Category:
Athletes Passed
3754
Passed By
464
Net Change
+3290
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22605
5K → 10K95335+918#22605#21687
10K → 15K342106+236#21687#21451
15K → 20K292110+182#21451#21269
20K → Half2243-21#21269#21290
Half → 25K27040+230#21290#21060
25K → 30K44845+403#21060#20657
30K → 20M2607+253#20657#20404
20M → 21M2683+265#20404#20139
21M → 35K8130+51#20139#20088
35K → 23M18318+165#20088#19923
23M → 24M1973+194#19923#19729
24M → 40K1931+192#19729#19537
40K → 25.2M3522+13#19537#19524
25.2M → Finish2101+209#19524#19315
TOTALS3754464+3290
📊

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