Boston Marathon logo
BOSTON MARATHON 2025

Mark Sailer

Bib: 13716•M

ND

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Top 31%
Gender (Male)
#0 / 16105
Top 44%
Masters (Masters Men)
#0 / 10463
Top 32%
Division (M50-54)
#0 / 1996
Top 30%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:12
Rank: #11930
Start → 5K
23:12 | 7:28/mi
10K· 6.21 mi
46:28
Rank: #11929 (+1)
5K → 10K
23:16 | 7:29/mi
15K· 9.32 mi
1:09:25
Rank: #11503 (+426)
10K → 15K
22:57 | 7:23/mi
20K· 12.43 mi
1:32:39
Rank: #11269 (+234)
15K → 20K
23:14 | 7:29/mi
Half· 13.11 mi
1:37:41
Rank: #11228 (+41)
20K → Half
5:02 | 7:23/mi
25K· 15.53 mi
1:55:50
Rank: #10949 (+279)
Half → 25K
18:09 | 7:29/mi
30K· 18.64 mi
2:19:16
Rank: #10316 (+633)
25K → 30K
23:26 | 7:33/mi
20M
2:29:33
Rank: #10024 (+292)
30K → 20M
10:17 | 7:34/mi
21M
2:37:22
Rank: #9742 (+282)
20M → 21M
7:49 | 7:49/mi
35K· 21.75 mi
2:42:45
Rank: #9598 (+144)
21M → 35K
5:23 | 7:12/mi
23M
2:52:07
Rank: #9352 (+246)
35K → 23M
9:22 | 7:29/mi
24M
2:59:18
Rank: #9130 (+222)
23M → 24M
7:11 | 7:11/mi
40K· 24.85 mi
3:05:29
Rank: #8897 (+233)
24M → 40K
6:11 | 7:14/mi
25.2M
3:08:16
Rank: #8839 (+58)
40K → 25.2M
2:47 | 8:04/mi
Finish· 26.22 mi
3:15:36
Rank: #8748 (+91)
25.2M → Finish
7:20 | 7:12/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 Half⚖️ Balanced
Distance13.11 mi
Time1:37:41
Pace7:27 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:37:55
Pace7:28 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:3723:127:2823:12
7:28
-
10K
6.21 mi11:15:5346:287:2923:16
7:29
+0:01
15K
9.32 mi11:38:501:09:257:2722:57
7:23
-0:06
20K
12.43 mi12:02:041:32:397:2723:14
7:29
+0:06
Half
13.11 mi12:07:061:37:417:275:02
7:23
-0:06
25K
15.53 mi12:25:151:55:507:2718:09
7:29
+0:06
30K
18.64 mi12:48:412:19:167:2823:26
7:33
+0:04
20M
20.00 mi12:58:582:29:337:2910:17
7:34
+0:01
21M
21.00 mi13:06:472:37:227:307:49
7:49
+0:15
35K
21.75 mi13:12:102:42:457:295:23
7:12
-0:37
23M
23.00 mi13:21:322:52:077:299:22
7:29
+0:17
24M
24.00 mi13:28:432:59:187:287:11
7:11
-0:18
40K
24.85 mi13:34:543:05:297:286:11
7:14
+0:03
25.2M
25.20 mi13:37:413:08:167:282:47
8:04
+0:50
Finish
26.22 mi13:45:013:15:367:287:20
7:12
-0:52

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

7:11 /mi

Average Pace

7:28 /mi

Slowest Pace

8:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:12:49

99% of race

Time at Steady Pace

2:47

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:28 /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 mi10:52:3723:127:2823:12
7:28
#11930
10K
6.21 mi11:15:5346:287:2923:16
7:29
#11929
15K
9.32 mi11:38:501:09:257:2722:57
7:23
#11503
20K
12.43 mi12:02:041:32:397:2723:14
7:29
#11269
Half
13.11 mi12:07:061:37:417:275:02
7:23
#11228
25K
15.53 mi12:25:151:55:507:2718:09
7:29
#10949
30K
18.64 mi12:48:412:19:167:2823:26
7:33
#10316
20M
20.00 mi12:58:582:29:337:2910:17
7:34
#10024
21M
21.00 mi13:06:472:37:227:307:49
7:49
#9742
35K
21.75 mi13:12:102:42:457:295:23
7:12
#9598
23M
23.00 mi13:21:322:52:077:299:22
7:29
#9352
24M
24.00 mi13:28:432:59:187:287:11
7:11
#9130
40K
24.85 mi13:34:543:05:297:286:11
7:14
#8897
25.2M
25.20 mi13:37:413:08:167:282:47
8:04
#8839
Finish
26.22 mi13:45:013:15:367:287:20
7:12
#8748
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi119309136913610724(Top 38%)8458(Top 53%)8458(Top 424%)
10K6.21 mi3.10 mi11929+19123+139123+1311984(Top 42%)9135(Top 57%)9135(Top 458%)
15K9.32 mi3.11 mi11503+4268887+2368887+23610724(Top 38%)8458(Top 53%)8458(Top 424%)
20K12.43 mi3.11 mi11269+2348748+1398748+13910548(Top 37%)8279(Top 51%)8279(Top 415%)
Half13.11 mi0.68 mi11228+418730+188730+1810596(Top 37%)8318(Top 52%)8318(Top 417%)
25K15.53 mi2.42 mi10949+2798557+1738557+1739830(Top 35%)7769(Top 48%)7769(Top 389%)
30K18.64 mi3.11 mi10316+6338179+3788179+3788038(Top 28%)6615(Top 41%)6615(Top 331%)
20M20.00 mi1.36 mi10024+2927998+1817998+1817461(Top 26%)6121(Top 38%)6121(Top 307%)
21M21.00 mi1.00 mi9742+2827816+1827816+1826297(Top 22%)5265(Top 33%)5265(Top 264%)
35K21.75 mi0.75 mi9598+1447716+1007716+1006583(Top 23%)5449(Top 34%)5449(Top 273%)
23M23.00 mi1.25 mi9352+2467533+1837533+1836530(Top 23%)5315(Top 33%)5315(Top 266%)
24M24.00 mi1.00 mi9130+2227382+1517382+1515735(Top 20%)4760(Top 30%)4760(Top 238%)
40K24.85 mi0.85 mi8897+2337206+1767206+1765243(Top 18%)4384(Top 27%)4384(Top 220%)
25.2M25.20 mi0.35 mi8839+587154+527154+526318(Top 22%)4951(Top 31%)4951(Top 248%)
Finish26.22 mi1.02 mi8748+917070+847070+847014(Top 25%)5344(Top 33%)5344(Top 268%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21stories
+97ft-345ft

Overall

10724

Males

8458

M50-54

8458

5K→10K

3.1 - 6.2 mi

Top 42%
×5stories
+79ft-138ft

Overall

11984

Males

9135

M50-54

9135

10K→15K

6.2 - 9.3 mi

Top 38%
×3stories
+67ft-78ft

Overall

10724

Males

8458

M50-54

8458

15K→20K

9.3 - 12.4 mi

Top 37%
×5stories
+106ft-86ft

Overall

10548

Males

8279

M50-54

8279

20K→Half

12.4 - 13.1 mi

Top 37%
×2stories
+19ft-37ft

Overall

10596

Males

8318

M50-54

8318

Half→25K

13.1 - 15.5 mi

Top 35%
×4stories
+66ft-88ft

Overall

9830

Males

7769

M50-54

7769

25K→30K

15.5 - 18.6 mi

Top 28%
×9stories
+181ft-148ft

Overall

8038

Males

6615

M50-54

6615

30K→20M

18.6 - 20.0 mi

Top 26%
×5stories
+64ft-50ft

Overall

7461

Males

6121

M50-54

6121

20M→21M

20.0 - 21.0 mi

Top 22%
×8stories
+106ft-24ft

Overall

6297

Males

5265

M50-54

5265

21M→35K

21.0 - 21.8 mi

Top 23%
×7stories
+17ft-86ft

Overall

6583

Males

5449

M50-54

5449

35K→23M

21.8 - 23.0 mi

Top 23%
×5stories
+23ft-63ft

Overall

6530

Males

5315

M50-54

5315

23M→24M

23.0 - 24.0 mi

Top 20%
×6stories
+12ft-82ft

Overall

5735

Males

4760

M50-54

4760

24M→40K

24.0 - 24.9 mi

Top 18%
×1story
+6ft-20ft

Overall

5243

Males

4384

M50-54

4384

40K→25.2M

24.9 - 25.2 mi

Top 22%
×1story
+13ft-16ft

Overall

6318

Males

4951

M50-54

4951

25.2M→Finish

25.2 - 26.2 mi

Top 25%
×2stories
+22ft-21ft

Overall

7014

Males

5344

M50-54

5344

Passing Analysis

Category:
Athletes Passed
3665*
Passed By
483
Net Change
+3182
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11930
5K → 10K248247+1#11930#11929
10K → 15K46034+426#11929#11503
15K → 20K30672+234#11503#11269
20K → Half5413+41#11269#11228
Half → 25K31132+279#11228#10949
25K → 30K6396+633#10949#10316
30K → 20M2986+292#10316#10024
20M → 21M287*5+282#10024#9742
21M → 35K1506+144#9742#9598
35K → 23M2526+246#9598#9352
23M → 24M2286+222#9352#9130
24M → 40K2374+233#9130#8897
40K → 25.2M679+58#8897#8839
25.2M → Finish12837+91#8839#8748
TOTALS3665*483+3182

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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