Boston Marathon logo
BOSTON MARATHON 2025

Patrick Kalin

Bib: 5655•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 (M40-44)
#0 / 2247
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:20
Rank: #4171
Start → 5K
20:20 | 6:33/mi
10K· 6.21 mi
40:26
Rank: #3840 (+331)
5K → 10K
20:06 | 6:28/mi
15K· 9.32 mi
1:00:58
Rank: #3968 (-128)
10K → 15K
20:32 | 6:37/mi
20K· 12.43 mi
1:22:09
Rank: #4273 (-305)
15K → 20K
21:11 | 6:49/mi
Half· 13.11 mi
1:26:39
Rank: #4250 (+23)
20K → Half
4:30 | 6:36/mi
25K· 15.53 mi
1:45:11
Rank: #5477 (-1227)
Half → 25K
18:32 | 7:39/mi
30K· 18.64 mi
2:08:57
Rank: #6094 (-617)
25K → 30K
23:46 | 7:39/mi
20M
2:24:07
Rank: #7799 (-1705)
30K → 20M
15:10 | 11:10/mi
21M
2:37:29
Rank: #9792 (-1993)
20M → 21M
13:22 | 13:22/mi
35K· 21.75 mi
2:48:12
Rank: #11697 (-1905)
21M → 35K
10:43 | 14:19/mi
23M
3:06:31
Rank: #14395 (-2698)
35K → 23M
18:19 | 14:38/mi
24M
3:16:27
Rank: #14785 (-390)
23M → 24M
9:56 | 9:56/mi
40K· 24.85 mi
3:25:09
Rank: #15139 (-354)
24M → 40K
8:42 | 10:11/mi
25.2M
3:28:43
Rank: #15195 (-56)
40K → 25.2M
3:34 | 10:21/mi
Finish· 26.22 mi
3:37:21
Rank: #15228 (-33)
25.2M → Finish
8:38 | 8:28/mi

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
Time1:26:39
Pace6:37 /mi
2nd Half
Distance13.11 mi
Time2:10:42
Pace9:58 /mi
📊Positive Split: 50.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:1020:206:3320:20
6:33
-
10K
6.21 mi10:45:1640:266:3020:06
6:28
-0:05
15K
9.32 mi11:05:481:00:586:3220:32
6:37
+0:09
20K
12.43 mi11:26:591:22:096:3721:11
6:49
+0:12
Half
13.11 mi11:31:291:26:396:374:30
6:36
-0:13
25K
15.53 mi11:50:011:45:116:4618:32
7:39
+1:03
30K
18.64 mi12:13:472:08:576:5523:46
7:39
0:00
20M
20.00 mi12:28:572:24:077:1215:10
11:10
+3:31
21M
21.00 mi12:42:192:37:297:3013:22
13:22
+2:12
35K
21.75 mi12:53:022:48:127:4410:43
14:19
+0:57
23M
23.00 mi13:11:213:06:318:0718:19
14:38
+0:19
24M
24.00 mi13:21:173:16:278:119:56
9:56
-4:42
40K
24.85 mi13:29:593:25:098:158:42
10:11
+0:15
25.2M
25.20 mi13:33:333:28:438:173:34
10:21
+0:10
Finish
26.22 mi13:42:113:37:218:188:38
8:28
-1:53

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

6:28 /mi

Average Pace

8:18 /mi

Slowest Pace

14:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:26:39

40% of race

Time at Steady Pace

50:56

23% of race

Time at Slower Pace

1:19:46

37% of race

Average Pace: 8:17 /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 mi10:25:1020:206:3320:20
6:33
#4171
10K
6.21 mi10:45:1640:266:3020:06
6:28
#3840
15K
9.32 mi11:05:481:00:586:3220:32
6:37
#3968
20K
12.43 mi11:26:591:22:096:3721:11
6:49
#4273
Half
13.11 mi11:31:291:26:396:374:30
6:36
#4250
25K
15.53 mi11:50:011:45:116:4618:32
7:39
#5477
30K
18.64 mi12:13:472:08:576:5523:46
7:39
#6094
20M
20.00 mi12:28:572:24:077:1215:10
11:10
#7799
21M
21.00 mi12:42:192:37:297:3013:22
13:22
#9792
35K
21.75 mi12:53:022:48:127:4410:43
14:19
#11697
23M
23.00 mi13:11:213:06:318:0718:19
14:38
#14395
24M
24.00 mi13:21:173:16:278:119:56
9:56
#14785
40K
24.85 mi13:29:593:25:098:158:42
10:11
#15139
25.2M
25.20 mi13:33:333:28:438:173:34
10:21
#15195
Finish
26.22 mi13:42:113:37:218:188:38
8:28
#15228
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi4171393239324324(Top 15%)4062(Top 25%)4062(Top 181%)
10K6.21 mi3.10 mi3840+3313632+3003632+3003527(Top 12%)3342(Top 21%)3342(Top 149%)
15K9.32 mi3.11 mi3968-1283739-1073739-1074324(Top 15%)4062(Top 25%)4062(Top 181%)
20K12.43 mi3.11 mi4273-3054018-2794018-2795502(Top 19%)5029(Top 31%)5029(Top 224%)
Half13.11 mi0.68 mi4250+233997+213997+214446(Top 16%)4168(Top 26%)4168(Top 185%)
25K15.53 mi2.42 mi5477-12275035-10385035-103811124(Top 39%)8439(Top 52%)8439(Top 376%)
30K18.64 mi3.11 mi6094-6175503-4685503-4688804(Top 31%)7031(Top 44%)7031(Top 313%)
20M20.00 mi1.36 mi7799-17056716-12136716-121323896(Top 84%)13931(Top 87%)13931(Top 620%)
21M21.00 mi1.00 mi9792-19937841-11257841-112525520(Top 90%)14638(Top 91%)14638(Top 651%)
35K21.75 mi0.75 mi11697-19058737-8968737-89627846(Top 98%)15751(Top 98%)15751(Top 701%)
23M23.00 mi1.25 mi14395-26989918-11819918-118127719(Top 98%)15686(Top 97%)15686(Top 698%)
24M24.00 mi1.00 mi14785-39010062-14410062-14421143(Top 74%)12406(Top 77%)12406(Top 552%)
40K24.85 mi0.85 mi15139-35410174-11210174-11220984(Top 74%)12265(Top 76%)12265(Top 546%)
25.2M25.20 mi0.35 mi15195-5610188-1410188-1418389(Top 65%)10997(Top 68%)10997(Top 489%)
Finish26.22 mi1.02 mi15228-3310181+710181+716011(Top 56%)9943(Top 62%)9943(Top 443%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 15%
×21stories
+97ft-345ft

Overall

4324

Males

4062

M40-44

4062

5K→10K

3.1 - 6.2 mi

Top 12%
×5stories
+79ft-138ft

Overall

3527

Males

3342

M40-44

3342

10K→15K

6.2 - 9.3 mi

Top 15%
×3stories
+67ft-78ft

Overall

4324

Males

4062

M40-44

4062

15K→20K

9.3 - 12.4 mi

Top 19%
×5stories
+106ft-86ft

Overall

5502

Males

5029

M40-44

5029

20K→Half

12.4 - 13.1 mi

Top 16%
×2stories
+19ft-37ft

Overall

4446

Males

4168

M40-44

4168

Half→25K

13.1 - 15.5 mi

Top 39%
×4stories
+66ft-88ft

Overall

11124

Males

8439

M40-44

8439

25K→30K

15.5 - 18.6 mi

Top 31%
×9stories
+181ft-148ft

Overall

8804

Males

7031

M40-44

7031

30K→20M

18.6 - 20.0 mi

Top 84%
×5stories
+64ft-50ft

Overall

23896

Males

13931

M40-44

13931

20M→21M

20.0 - 21.0 mi

Top 90%
×8stories
+106ft-24ft

Overall

25520

Males

14638

M40-44

14638

21M→35K

21.0 - 21.8 mi

Top 98%
×7stories
+17ft-86ft

Overall

27846

Males

15751

M40-44

15751

35K→23M

21.8 - 23.0 mi

Top 98%
×5stories
+23ft-63ft

Overall

27719

Males

15686

M40-44

15686

23M→24M

23.0 - 24.0 mi

Top 74%
×6stories
+12ft-82ft

Overall

21143

Males

12406

M40-44

12406

24M→40K

24.0 - 24.9 mi

Top 74%
×1story
+6ft-20ft

Overall

20984

Males

12265

M40-44

12265

40K→25.2M

24.9 - 25.2 mi

Top 65%
×1story
+13ft-16ft

Overall

18389

Males

10997

M40-44

10997

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2stories
+22ft-21ft

Overall

16011

Males

9943

M40-44

9943

Passing Analysis

Category:
Athletes Passed
659
Passed By
11714
Net Change
-11057
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4171
5K → 10K36736+331#4171#3840
10K → 15K58186-128#3840#3968
15K → 20K33338-305#3968#4273
20K → Half3310+23#4273#4250
Half → 25K61233-1227#4250#5477
25K → 30K57674-617#5477#6094
30K → 20M31708-1705#6094#7799
20M → 21M11994-1993#7799#9792
21M → 35K01903-1905#9792#11697
35K → 23M32701-2698#11697#14395
23M → 24M12402-390#14395#14785
24M → 40K16370-354#14785#15139
40K → 25.2M2076-56#15139#15195
25.2M → Finish5083-33#15195#15228
TOTALS65911714-11057
📊

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