Boston Marathon logo
BOSTON MARATHON 2025

Jan Thorsson

Bib: 19376•M

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M55-59)
#0 / 1648
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
8:16/mi
25:40
↑ 97↓ 3451.5%
10K· 6.21 mi
8:32/mi
52:10
↑ 79↓ 1380.4%
15K· 9.32 mi
8:32/mi
1:18:42
↑ 67↓ 78
20K· 12.43 mi
8:34/mi
1:45:19
↑ 106↓ 860.1%
Half· 13.11 mi
8:42/mi
1:51:15
↑ 19↓ 370.5%
25K· 15.53 mi
8:45/mi
2:12:29
↑ 66↓ 880.2%
30K· 18.64 mi
8:56/mi
2:40:14
↑ 181↓ 1480.2%
20M
8:57/mi
2:52:24
↑ 64↓ 500.2%
21M
9:37/mi
3:02:01
↑ 106↓ 241.6%
35K· 21.75 mi
8:45/mi
3:08:34
↑ 17↓ 861.7%
23M
9:08/mi
3:20:00
↑ 23↓ 630.6%
24M
8:55/mi
3:28:55
↓ 821.3%
40K· 24.85 mi
9:09/mi
3:36:44
↓ 200.3%
25.2M
9:57/mi
3:40:10
↑ 13↓ 160.2%
Finish· 26.22 mi
8:50/mi
3:49:10
↑ 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
Time1:51:15
Pace8:29 /mi
2nd Half
Distance13.11 mi
Time1:57:55
Pace9:00 /mi
📊Positive Split: 6.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:1025:408:1625:40
8:16
-
10K
6.21 mi11:43:4052:108:2426:30
8:32
+0:16
15K
9.32 mi12:10:121:18:428:2726:32
8:32
0:00
20K
12.43 mi12:36:491:45:198:2826:37
8:34
+0:02
Half
13.11 mi12:42:451:51:158:295:56
8:42
+0:08
25K
15.53 mi13:03:592:12:298:3221:14
8:45
+0:03
30K
18.64 mi13:31:442:40:148:3627:45
8:56
+0:11
20M
20.00 mi13:43:542:52:248:3712:10
8:57
+0:01
21M
21.00 mi13:53:313:02:018:409:37
9:37
+0:40
35K
21.75 mi14:00:043:08:348:406:33
8:45
-0:52
23M
23.00 mi14:11:303:20:008:4211:26
9:08
+0:23
24M
24.00 mi14:20:253:28:558:428:55
8:55
-0:13
40K
24.85 mi14:28:143:36:448:437:49
9:09
+0:14
25.2M
25.20 mi14:31:403:40:108:443:26
9:57
+0:48
Finish
26.22 mi14:40:403:49:108:459:00
8:50
-1:07

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

8:16 /mi

Average Pace

8:45 /mi

Slowest Pace

9:57 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:45:19

46% of race

Time at Steady Pace

1:31:33

40% of race

Time at Slower Pace

32:18

14% of race

Average Pace: 8:44 /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 mi11:17:1025:408:1625:40
8:16
#18477
10K
6.21 mi11:43:4052:108:2426:30
8:32
#19210
15K
9.32 mi12:10:121:18:428:2726:32
8:32
#19312
20K
12.43 mi12:36:491:45:198:2826:37
8:34
#19109
Half
13.11 mi12:42:451:51:158:295:56
8:42
#19167
25K
15.53 mi13:03:592:12:298:3221:14
8:45
#19078
30K
18.64 mi13:31:442:40:148:3627:45
8:56
#18720
20M
20.00 mi13:43:542:52:248:3712:10
8:57
#18546
21M
21.00 mi13:53:313:02:018:409:37
9:37
#18405
35K
21.75 mi14:00:043:08:348:406:33
8:45
#18357
23M
23.00 mi14:11:303:20:008:4211:26
9:08
#18265
24M
24.00 mi14:20:253:28:558:428:55
8:55
#18183
40K
24.85 mi14:28:143:36:448:437:49
9:09
#18137
25.2M
25.20 mi14:31:403:40:108:443:26
9:57
#18112
Finish
26.22 mi14:40:403:49:108:459:00
8:50
#18121
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi18477118021180219561(Top 69%)12300(Top 76%)12300(Top 746%)
10K6.21 mi3.10 mi19210-73312142-34012142-34019952(Top 70%)12456(Top 77%)12456(Top 756%)
15K9.32 mi3.11 mi19312-10212186-4412186-4419561(Top 69%)12300(Top 76%)12300(Top 746%)
20K12.43 mi3.11 mi19109+20312089+9712089+9718631(Top 66%)11873(Top 74%)11873(Top 720%)
Half13.11 mi0.68 mi19167-5812107-1812107-1820284(Top 71%)12576(Top 78%)12576(Top 763%)
25K15.53 mi2.42 mi19078+8912061+4612061+4618697(Top 66%)11833(Top 73%)11833(Top 718%)
30K18.64 mi3.11 mi18720+35811885+17611885+17617315(Top 61%)11070(Top 69%)11070(Top 672%)
20M20.00 mi1.36 mi18546+17411781+10411781+10416550(Top 58%)10613(Top 66%)10613(Top 644%)
21M21.00 mi1.00 mi18405+14111680+10111680+10116615(Top 58%)10533(Top 65%)10533(Top 639%)
35K21.75 mi0.75 mi18357+4811649+3111649+3117000(Top 60%)10615(Top 66%)10615(Top 644%)
23M23.00 mi1.25 mi18265+9211581+6811581+6816995(Top 60%)10508(Top 65%)10508(Top 638%)
24M24.00 mi1.00 mi18183+8211515+6611515+6616916(Top 60%)10424(Top 65%)10424(Top 633%)
40K24.85 mi0.85 mi18137+4611467+4811467+4817071(Top 60%)10412(Top 65%)10412(Top 632%)
25.2M25.20 mi0.35 mi18112+2511447+2011447+2016790(Top 59%)10273(Top 64%)10273(Top 623%)
Finish26.22 mi1.02 mi18121-911438+911438+918197(Top 64%)10970(Top 68%)10970(Top 666%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21story building
+97ft-345ft

Overall

19561

Males

12300

M55-59

12300

5K→10K

3.1 - 6.2 mi

Top 70%
×5story building
+79ft-138ft

Overall

19952

Males

12456

M55-59

12456

10K→15K

6.2 - 9.3 mi

Top 69%
×3story building
+67ft-78ft

Overall

19561

Males

12300

M55-59

12300

15K→20K

9.3 - 12.4 mi

Top 66%
×5story building
+106ft-86ft

Overall

18631

Males

11873

M55-59

11873

20K→Half

12.4 - 13.1 mi

Top 71%
×2story building
+19ft-37ft

Overall

20284

Males

12576

M55-59

12576

Half→25K

13.1 - 15.5 mi

Top 66%
×4story building
+66ft-88ft

Overall

18697

Males

11833

M55-59

11833

25K→30K

15.5 - 18.6 mi

Top 61%
×9story building
+181ft-148ft

Overall

17315

Males

11070

M55-59

11070

30K→20M

18.6 - 20.0 mi

Top 58%
×5story building
+64ft-50ft

Overall

16550

Males

10613

M55-59

10613

20M→21M

20.0 - 21.0 mi

Top 58%
×8story building
+106ft-24ft

Overall

16615

Males

10533

M55-59

10533

21M→35K

21.0 - 21.8 mi

Top 60%
×7story building
+17ft-86ft

Overall

17000

Males

10615

M55-59

10615

35K→23M

21.8 - 23.0 mi

Top 60%
×5story building
+23ft-63ft

Overall

16995

Males

10508

M55-59

10508

23M→24M

23.0 - 24.0 mi

Top 60%
×6story building
+12ft-82ft

Overall

16916

Males

10424

M55-59

10424

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

17071

Males

10412

M55-59

10412

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1story
+13ft-16ft

Overall

16790

Males

10273

M55-59

10273

25.2M→Finish

25.2 - 26.2 mi

Top 64%
×2story building
+22ft-21ft

Overall

18197

Males

10970

M55-59

10970

Passing Analysis

Category:
Athletes Passed
2083
Passed By
1727
Net Change
+356
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18477
5K → 10K73806-733#18477#19210
10K → 15K163265-102#19210#19312
15K → 20K29491+203#19312#19109
20K → Half1674-58#19109#19167
Half → 25K210121+89#19167#19078
25K → 30K42870+358#19078#18720
30K → 20M20127+174#18720#18546
20M → 21M16928+141#18546#18405
21M → 35K7729+48#18405#18357
35K → 23M14856+92#18357#18265
23M → 24M11634+82#18265#18183
24M → 40K8842+46#18183#18137
40K → 25.2M4520+25#18137#18112
25.2M → Finish5564-9#18112#18121
TOTALS20831727+356
📊

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

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing