Boston Marathon logo
BOSTON MARATHON 2025

Alexander Schrantz

Bib: 18935•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

Start
0:00:00
Race begins
5K· 3.11 mi
25:26
Rank: #18006
Start → 5K
25:26 | 8:11/mi
10K· 6.21 mi
50:57
Rank: #17973 (+33)
5K → 10K
25:31 | 8:13/mi
15K· 9.32 mi
1:16:40
Rank: #17922 (+51)
10K → 15K
25:43 | 8:17/mi
20K· 12.43 mi
1:42:26
Rank: #17625 (+297)
15K → 20K
25:46 | 8:18/mi
Half· 13.11 mi
1:48:09
Rank: #17663 (-38)
20K → Half
5:43 | 8:23/mi
25K· 15.53 mi
2:08:36
Rank: #17469 (+194)
Half → 25K
20:27 | 8:26/mi
30K· 18.64 mi
2:36:06
Rank: #17295 (+174)
25K → 30K
27:30 | 8:51/mi
20M
2:48:19
Rank: #17231 (+64)
30K → 20M
12:13 | 8:59/mi
21M
2:57:37
Rank: #17077 (+154)
20M → 21M
9:18 | 9:18/mi
35K· 21.75 mi
3:04:02
Rank: #17023 (+54)
21M → 35K
6:25 | 8:35/mi
23M
3:15:11
Rank: #16922 (+101)
35K → 23M
11:09 | 8:54/mi
24M
3:24:01
Rank: #16889 (+33)
23M → 24M
8:50 | 8:50/mi
40K· 24.85 mi
3:31:42
Rank: #16856 (+33)
24M → 40K
7:41 | 8:59/mi
25.2M
3:35:05
Rank: #16834 (+22)
40K → 25.2M
3:23 | 9:49/mi
Finish· 26.22 mi
3:43:58
Rank: #16887 (-53)
25.2M → Finish
8:53 | 8:43/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
Time1:48:09
Pace8:15 /mi
2nd Half
Distance13.11 mi
Time1:55:49
Pace8:50 /mi
📊Positive Split: 7.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:1825:268:1125:26
8:11
-
10K
6.21 mi11:41:4950:578:1225:31
8:13
+0:02
15K
9.32 mi12:07:321:16:408:1425:43
8:17
+0:04
20K
12.43 mi12:33:181:42:268:1525:46
8:18
+0:01
Half
13.11 mi12:39:011:48:098:155:43
8:23
+0:05
25K
15.53 mi12:59:282:08:368:1720:27
8:26
+0:03
30K
18.64 mi13:26:582:36:068:2227:30
8:51
+0:25
20M
20.00 mi13:39:112:48:198:2512:13
8:59
+0:08
21M
21.00 mi13:48:292:57:378:279:18
9:18
+0:19
35K
21.75 mi13:54:543:04:028:286:25
8:35
-0:43
23M
23.00 mi14:06:033:15:118:2911:09
8:54
+0:19
24M
24.00 mi14:14:533:24:018:308:50
8:50
-0:04
40K
24.85 mi14:22:343:31:428:317:41
8:59
+0:09
25.2M
25.20 mi14:25:573:35:058:323:23
9:49
+0:50
Finish
26.22 mi14:34:503:43:588:338:53
8:43
-1:06

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

8:11 /mi

Average Pace

8:33 /mi

Slowest Pace

9:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:31:17

94% of race

Time at Steady Pace

9:18

4% of race

Time at Slower Pace

3:23

2% of race

Average Pace: 8:33 /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 mi11:16:1825:268:1125:26
8:11
#18006
10K
6.21 mi11:41:4950:578:1225:31
8:13
#17973
15K
9.32 mi12:07:321:16:408:1425:43
8:17
#17922
20K
12.43 mi12:33:181:42:268:1525:46
8:18
#17625
Half
13.11 mi12:39:011:48:098:155:43
8:23
#17663
25K
15.53 mi12:59:282:08:368:1720:27
8:26
#17469
30K
18.64 mi13:26:582:36:068:2227:30
8:51
#17295
20M
20.00 mi13:39:112:48:198:2512:13
8:59
#17231
21M
21.00 mi13:48:292:57:378:279:18
9:18
#17077
35K
21.75 mi13:54:543:04:028:286:25
8:35
#17023
23M
23.00 mi14:06:033:15:118:2911:09
8:54
#16922
24M
24.00 mi14:14:533:24:018:308:50
8:50
#16889
40K
24.85 mi14:22:343:31:428:317:41
8:59
#16856
25.2M
25.20 mi14:25:573:35:058:323:23
9:49
#16834
Finish
26.22 mi14:34:503:43:588:338:53
8:43
#16887
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi18006116011160117881(Top 63%)11583(Top 72%)11583(Top 703%)
10K6.21 mi3.10 mi17973+3311610-911610-917967(Top 63%)11645(Top 72%)11645(Top 707%)
15K9.32 mi3.11 mi17922+5111590+2011590+2017881(Top 63%)11583(Top 72%)11583(Top 703%)
20K12.43 mi3.11 mi17625+29711461+12911461+12916896(Top 59%)11132(Top 69%)11132(Top 675%)
Half13.11 mi0.68 mi17663-3811482-2111482-2118422(Top 65%)11784(Top 73%)11784(Top 715%)
25K15.53 mi2.42 mi17469+19411377+10511377+10516764(Top 59%)10992(Top 68%)10992(Top 667%)
30K18.64 mi3.11 mi17295+17411254+12311254+12316892(Top 59%)10868(Top 67%)10868(Top 659%)
20M20.00 mi1.36 mi17231+6411196+5811196+5816722(Top 59%)10692(Top 66%)10692(Top 649%)
21M21.00 mi1.00 mi17077+15411103+9311103+9315134(Top 53%)9846(Top 61%)9846(Top 597%)
35K21.75 mi0.75 mi17023+5411061+4211061+4215919(Top 56%)10146(Top 63%)10146(Top 616%)
23M23.00 mi1.25 mi16922+10110984+7710984+7715696(Top 55%)9940(Top 62%)9940(Top 603%)
24M24.00 mi1.00 mi16889+3310952+3210952+3216481(Top 58%)10245(Top 64%)10245(Top 622%)
40K24.85 mi0.85 mi16856+3310904+4810904+4816204(Top 57%)10008(Top 62%)10008(Top 607%)
25.2M25.20 mi0.35 mi16834+2210877+2710877+2716099(Top 57%)9924(Top 62%)9924(Top 602%)
Finish26.22 mi1.02 mi16887-5310886-910886-917556(Top 62%)10659(Top 66%)10659(Top 647%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 63%
×21stories
+97ft-345ft

Overall

17881

Males

11583

M55-59

11583

5K→10K

3.1 - 6.2 mi

Top 63%
×5stories
+79ft-138ft

Overall

17967

Males

11645

M55-59

11645

10K→15K

6.2 - 9.3 mi

Top 63%
×3stories
+67ft-78ft

Overall

17881

Males

11583

M55-59

11583

15K→20K

9.3 - 12.4 mi

Top 59%
×5stories
+106ft-86ft

Overall

16896

Males

11132

M55-59

11132

20K→Half

12.4 - 13.1 mi

Top 65%
×2stories
+19ft-37ft

Overall

18422

Males

11784

M55-59

11784

Half→25K

13.1 - 15.5 mi

Top 59%
×4stories
+66ft-88ft

Overall

16764

Males

10992

M55-59

10992

25K→30K

15.5 - 18.6 mi

Top 59%
×9stories
+181ft-148ft

Overall

16892

Males

10868

M55-59

10868

30K→20M

18.6 - 20.0 mi

Top 59%
×5stories
+64ft-50ft

Overall

16722

Males

10692

M55-59

10692

20M→21M

20.0 - 21.0 mi

Top 53%
×8stories
+106ft-24ft

Overall

15134

Males

9846

M55-59

9846

21M→35K

21.0 - 21.8 mi

Top 56%
×7stories
+17ft-86ft

Overall

15919

Males

10146

M55-59

10146

35K→23M

21.8 - 23.0 mi

Top 55%
×5stories
+23ft-63ft

Overall

15696

Males

9940

M55-59

9940

23M→24M

23.0 - 24.0 mi

Top 58%
×6stories
+12ft-82ft

Overall

16481

Males

10245

M55-59

10245

24M→40K

24.0 - 24.9 mi

Top 57%
×1story
+6ft-20ft

Overall

16204

Males

10008

M55-59

10008

40K→25.2M

24.9 - 25.2 mi

Top 57%
×1story
+13ft-16ft

Overall

16099

Males

9924

M55-59

9924

25.2M→Finish

25.2 - 26.2 mi

Top 62%
×2stories
+22ft-21ft

Overall

17556

Males

10659

M55-59

10659

Passing Analysis

Category:
Athletes Passed
2330
Passed By
1211
Net Change
+1119
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18006
5K → 10K305272+33#18006#17973
10K → 15K212161+51#17973#17922
15K → 20K36265+297#17922#17625
20K → Half2462-38#17625#17663
Half → 25K25965+194#17663#17469
25K → 30K303129+174#17469#17295
30K → 20M14076+64#17295#17231
20M → 21M18733+154#17231#17077
21M → 35K9440+54#17077#17023
35K → 23M16564+101#17023#16922
23M → 24M8754+33#16922#16889
24M → 40K8956+33#16889#16856
40K → 25.2M5028+22#16856#16834
25.2M → Finish53106-53#16834#16887
TOTALS23301211+1119
📊

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