Boston Marathon logo
BOSTON MARATHON 2025

Frederik Søby

Bib: 2549•M

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 17%
Gender (Male)
#0 / 16105
Top 28%
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
20:40
Rank: #5032
Start → 5K
6:39/mi
20:40 split
10K· 6.21 mi
41:26
Rank: #5078 (-46)
5K → 10K
6:41/mi
20:46 split
15K· 9.32 mi
1:02:18
Rank: #5098 (-20)
10K → 15K
6:43/mi
20:52 split
20K· 12.43 mi
1:24:46
Rank: #6117 (-1019)
15K → 20K
7:14/mi
22:28 split
Half· 13.11 mi
1:29:14
Rank: #6009 (+108)
20K → Half
6:33/mi
4:28 split
25K· 15.53 mi
1:45:31
Rank: #5646 (+363)
Half → 25K
6:43/mi
16:17 split
30K· 18.64 mi
2:07:16
Rank: #5387 (+259)
25K → 30K
7:00/mi
21:45 split
20M
2:16:57
Rank: #5343 (+44)
30K → 20M
7:08/mi
9:41 split
21M
2:24:44
Rank: #5369 (-26)
20M → 21M
7:47/mi
7:47 split
35K· 21.75 mi
2:30:00
Rank: #5352 (+17)
21M → 35K
7:02/mi
5:16 split
23M
2:39:01
Rank: #5272 (+80)
35K → 23M
7:12/mi
9:01 split
24M
2:46:05
Rank: #5232 (+40)
23M → 24M
7:04/mi
7:04 split
40K· 24.85 mi
2:51:55
Rank: #5113 (+119)
24M → 40K
6:49/mi
5:50 split
25.2M
2:54:24
Rank: #5041 (+72)
40K → 25.2M
7:12/mi
2:29 split
Finish· 26.22 mi
3:00:46
Rank: #4865 (+176)
25.2M → Finish
6:15/mi
6:22 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
Time1:29:14
Pace6:48 /mi
2nd Half
Distance13.11 mi
Time1:31:32
Pace6:59 /mi
📊Positive Split: 2.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:5520:406:3920:40
6:39
-
10K
6.21 mi10:42:4141:266:4020:46
6:41
+0:02
15K
9.32 mi11:03:331:02:186:4120:52
6:43
+0:02
20K
12.43 mi11:26:011:24:466:4922:28
7:14
+0:31
Half
13.11 mi11:30:291:29:146:484:28
6:33
-0:41
25K
15.53 mi11:46:461:45:316:4816:17
6:43
+0:10
30K
18.64 mi12:08:312:07:166:5021:45
7:00
+0:17
20M
20.00 mi12:18:122:16:576:519:41
7:08
+0:08
21M
21.00 mi12:25:592:24:446:547:47
7:47
+0:39
35K
21.75 mi12:31:152:30:006:545:16
7:02
-0:45
23M
23.00 mi12:40:162:39:016:559:01
7:12
+0:10
24M
24.00 mi12:47:202:46:056:557:04
7:04
-0:08
40K
24.85 mi12:53:102:51:556:555:50
6:49
-0:15
25.2M
25.20 mi12:55:392:54:246:552:29
7:12
+0:23
Finish
26.22 mi13:02:013:00:466:546:22
6:15
-0:57

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

6:54 /mi

Slowest Pace

7:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:35:15

53% of race

Time at Steady Pace

43:46

24% of race

Time at Slower Pace

41:45

23% of race

Average Pace: 6:54 /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 mi10:21:5520:406:3920:40
6:39
#5032
10K
6.21 mi10:42:4141:266:4020:46
6:41
#5078
15K
9.32 mi11:03:331:02:186:4120:52
6:43
#5098
20K
12.43 mi11:26:011:24:466:4922:28
7:14
#6117
Half
13.11 mi11:30:291:29:146:484:28
6:33
#6009
25K
15.53 mi11:46:461:45:316:4816:17
6:43
#5646
30K
18.64 mi12:08:312:07:166:5021:45
7:00
#5387
20M
20.00 mi12:18:122:16:576:519:41
7:08
#5343
21M
21.00 mi12:25:592:24:446:547:47
7:47
#5369
35K
21.75 mi12:31:152:30:006:545:16
7:02
#5352
23M
23.00 mi12:40:162:39:016:559:01
7:12
#5272
24M
24.00 mi12:47:202:46:056:557:04
7:04
#5232
40K
24.85 mi12:53:102:51:556:555:50
6:49
#5113
25.2M
25.20 mi12:55:392:54:246:552:29
7:12
#5041
Finish
26.22 mi13:02:013:00:466:546:22
6:15
#4865
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5032469846985223(Top 18%)4829(Top 30%)4829(Top 86%)
10K6.21 mi3.10 mi5078-464731-334731-335193(Top 18%)4822(Top 30%)4822(Top 85%)
15K9.32 mi3.11 mi5098-204747-164747-165223(Top 18%)4829(Top 30%)4829(Top 86%)
20K12.43 mi3.11 mi6117-10195579-8325579-8328449(Top 30%)7125(Top 44%)7125(Top 126%)
Half13.11 mi0.68 mi6009+1085489+905489+903989(Top 14%)3753(Top 23%)3753(Top 67%)
25K15.53 mi2.42 mi5646+3635182+3075182+3074248(Top 15%)3944(Top 24%)3944(Top 70%)
30K18.64 mi3.11 mi5387+2594940+2424940+2424674(Top 16%)4261(Top 26%)4261(Top 76%)
20M20.00 mi1.36 mi5343+444894+464894+464793(Top 17%)4319(Top 27%)4319(Top 77%)
21M21.00 mi1.00 mi5369-264908-144908-146059(Top 21%)5085(Top 32%)5085(Top 90%)
35K21.75 mi0.75 mi5352+174891+174891+175578(Top 20%)4766(Top 30%)4766(Top 84%)
23M23.00 mi1.25 mi5272+804806+854806+854862(Top 17%)4213(Top 26%)4213(Top 75%)
24M24.00 mi1.00 mi5232+404765+414765+414990(Top 18%)4247(Top 26%)4247(Top 75%)
40K24.85 mi0.85 mi5113+1194655+1104655+1102957(Top 10%)2666(Top 17%)2666(Top 47%)
25.2M25.20 mi0.35 mi5041+724596+594596+592151(Top 8%)1940(Top 12%)1940(Top 34%)
Finish26.22 mi1.02 mi4865+1764440+1564440+1561695(Top 6%)1571(Top 10%)1571(Top 28%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 18%
×21story building
+97ft-345ft

Overall

5223

Males

4829

M18-39

4829

5K→10K

3.1 - 6.2 mi

Top 18%
×5story building
+79ft-138ft

Overall

5193

Males

4822

M18-39

4822

10K→15K

6.2 - 9.3 mi

Top 18%
×3story building
+67ft-78ft

Overall

5223

Males

4829

M18-39

4829

15K→20K

9.3 - 12.4 mi

Top 30%
×5story building
+106ft-86ft

Overall

8449

Males

7125

M18-39

7125

20K→Half

12.4 - 13.1 mi

Top 14%
×2story building
+19ft-37ft

Overall

3989

Males

3753

M18-39

3753

Half→25K

13.1 - 15.5 mi

Top 15%
×4story building
+66ft-88ft

Overall

4248

Males

3944

M18-39

3944

25K→30K

15.5 - 18.6 mi

Top 16%
×9story building
+181ft-148ft

Overall

4674

Males

4261

M18-39

4261

30K→20M

18.6 - 20.0 mi

Top 17%
×5story building
+64ft-50ft

Overall

4793

Males

4319

M18-39

4319

20M→21M

20.0 - 21.0 mi

Top 21%
×8story building
+106ft-24ft

Overall

6059

Males

5085

M18-39

5085

21M→35K

21.0 - 21.8 mi

Top 20%
×7story building
+17ft-86ft

Overall

5578

Males

4766

M18-39

4766

35K→23M

21.8 - 23.0 mi

Top 17%
×5story building
+23ft-63ft

Overall

4862

Males

4213

M18-39

4213

23M→24M

23.0 - 24.0 mi

Top 18%
×6story building
+12ft-82ft

Overall

4990

Males

4247

M18-39

4247

24M→40K

24.0 - 24.9 mi

Top 10%
×1story
+6ft-20ft

Overall

2957

Males

2666

M18-39

2666

40K→25.2M

24.9 - 25.2 mi

Top 8%
×1story
+13ft-16ft

Overall

2151

Males

1940

M18-39

1940

25.2M→Finish

25.2 - 26.2 mi

Top 6%
×2story building
+22ft-21ft

Overall

1695

Males

1571

M18-39

1571

Passing Analysis

Category:
Athletes Passed
1857
Passed By
1690
Net Change
+167
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5032
5K → 10K150196-46#5032#5078
10K → 15K125145-20#5078#5098
15K → 20K121031-1019#5098#6117
20K → Half1080+108#6117#6009
Half → 25K3641+363#6009#5646
25K → 30K31152+259#5646#5387
30K → 20M10258+44#5387#5343
20M → 21M6793-26#5343#5369
21M → 35K5538+17#5369#5352
35K → 23M11939+80#5352#5272
23M → 24M7131+40#5272#5232
24M → 40K1223+119#5232#5113
40K → 25.2M742+72#5113#5041
25.2M → Finish1771+176#5041#4865
TOTALS18571690+167
📊

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