Boston Marathon logo
BOSTON MARATHON 2025

Brett Sillars

Bib: 9069•M

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Top 34%
Gender (Male)
#0 / 16105
Top 47%
Masters (Masters Men)
#0 / 10463
Top 35%
Division (M45-49)
#0 / 2386
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:39
Rank: #10250
Start → 5K
22:39 | 7:17/mi
10K· 6.21 mi
45:10
Rank: #10072 (+178)
5K → 10K
22:31 | 7:15/mi
15K· 9.32 mi
1:07:41
Rank: #9864 (+208)
10K → 15K
22:31 | 7:15/mi
20K· 12.43 mi
1:30:17
Rank: #9539 (+325)
15K → 20K
22:36 | 7:16/mi
Half· 13.11 mi
1:35:11
Rank: #9506 (+33)
20K → Half
4:54 | 7:11/mi
25K· 15.53 mi
1:52:54
Rank: #9293 (+213)
Half → 25K
17:43 | 7:18/mi
30K· 18.64 mi
2:16:11
Rank: #8885 (+408)
25K → 30K
23:17 | 7:30/mi
20M
2:26:35
Rank: #8769 (+116)
30K → 20M
10:24 | 7:39/mi
21M
2:34:49
Rank: #8740 (+29)
20M → 21M
8:14 | 8:14/mi
35K· 21.75 mi
2:40:21
Rank: #8677 (+63)
21M → 35K
5:32 | 7:24/mi
23M
2:50:22
Rank: #8710 (-33)
35K → 23M
10:01 | 8:00/mi
24M
2:58:27
Rank: #8843 (-133)
23M → 24M
8:05 | 8:05/mi
40K· 24.85 mi
3:05:42
Rank: #8989 (-146)
24M → 40K
7:15 | 8:29/mi
25.2M
3:09:08
Rank: #9143 (-154)
40K → 25.2M
3:26 | 9:57/mi
Finish· 26.22 mi
3:18:07
Rank: #9556 (-413)
25.2M → Finish
8:59 | 8:49/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
Time1:35:11
Pace7:16 /mi
2nd Half
Distance13.11 mi
Time1:42:56
Pace7:51 /mi
📊Positive Split: 8.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:4722:397:1722:39
7:17
-
10K
6.21 mi11:11:1845:107:1622:31
7:15
-0:02
15K
9.32 mi11:33:491:07:417:1622:31
7:15
0:00
20K
12.43 mi11:56:251:30:177:1622:36
7:16
+0:01
Half
13.11 mi12:01:191:35:117:164:54
7:11
-0:05
25K
15.53 mi12:19:021:52:547:1617:43
7:18
+0:07
30K
18.64 mi12:42:192:16:117:1823:17
7:30
+0:12
20M
20.00 mi12:52:432:26:357:2010:24
7:39
+0:09
21M
21.00 mi13:00:572:34:497:228:14
8:14
+0:35
35K
21.75 mi13:06:292:40:217:225:32
7:24
-0:50
23M
23.00 mi13:16:302:50:227:2410:01
8:00
+0:36
24M
24.00 mi13:24:352:58:277:268:05
8:05
+0:05
40K
24.85 mi13:31:503:05:427:287:15
8:29
+0:24
25.2M
25.20 mi13:35:163:09:087:303:26
9:57
+1:28
Finish
26.22 mi13:44:153:18:077:348:59
8:49
-1:08

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

7:34 /mi

Slowest Pace

9:57 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:32:07

77% of race

Time at Slower Pace

46:00

23% of race

Average Pace: 7:33 /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 mi10:48:4722:397:1722:39
7:17
#10250
10K
6.21 mi11:11:1845:107:1622:31
7:15
#10072
15K
9.32 mi11:33:491:07:417:1622:31
7:15
#9864
20K
12.43 mi11:56:251:30:177:1622:36
7:16
#9539
Half
13.11 mi12:01:191:35:117:164:54
7:11
#9506
25K
15.53 mi12:19:021:52:547:1617:43
7:18
#9293
30K
18.64 mi12:42:192:16:117:1823:17
7:30
#8885
20M
20.00 mi12:52:432:26:357:2010:24
7:39
#8769
21M
21.00 mi13:00:572:34:497:228:14
8:14
#8740
35K
21.75 mi13:06:292:40:217:225:32
7:24
#8677
23M
23.00 mi13:16:302:50:227:2410:01
8:00
#8710
24M
24.00 mi13:24:352:58:277:268:05
8:05
#8843
40K
24.85 mi13:31:503:05:427:287:15
8:29
#8989
25.2M
25.20 mi13:35:163:09:087:303:26
9:57
#9143
Finish
26.22 mi13:44:153:18:077:348:59
8:49
#9556
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi10250829782979525(Top 34%)7835(Top 49%)7835(Top 328%)
10K6.21 mi3.10 mi10072+1788200+978200+979893(Top 35%)8079(Top 50%)8079(Top 339%)
15K9.32 mi3.11 mi9864+2088058+1428058+1429525(Top 34%)7835(Top 49%)7835(Top 328%)
20K12.43 mi3.11 mi9539+3257854+2047854+2048823(Top 31%)7350(Top 46%)7350(Top 308%)
Half13.11 mi0.68 mi9506+337832+227832+228910(Top 31%)7432(Top 46%)7432(Top 311%)
25K15.53 mi2.42 mi9293+2137687+1457687+1458414(Top 30%)7008(Top 44%)7008(Top 294%)
30K18.64 mi3.11 mi8885+4087400+2877400+2877703(Top 27%)6413(Top 40%)6413(Top 269%)
20M20.00 mi1.36 mi8769+1167297+1037297+1038052(Top 28%)6479(Top 40%)6479(Top 272%)
21M21.00 mi1.00 mi8740+297255+427255+428779(Top 31%)6698(Top 42%)6698(Top 281%)
35K21.75 mi0.75 mi8677+637196+597196+597890(Top 28%)6244(Top 39%)6244(Top 262%)
23M23.00 mi1.25 mi8710-337173+237173+239999(Top 35%)7228(Top 45%)7228(Top 303%)
24M24.00 mi1.00 mi8843-1337211-387211-3811761(Top 41%)8034(Top 50%)8034(Top 337%)
40K24.85 mi0.85 mi8989-1467263-527263-5213261(Top 47%)8636(Top 54%)8636(Top 362%)
25.2M25.20 mi0.35 mi9143-1547331-687331-6816723(Top 59%)10206(Top 63%)10206(Top 428%)
Finish26.22 mi1.02 mi9556-4137508-1777508-17718093(Top 64%)10900(Top 68%)10900(Top 457%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 34%
×21stories
+97ft-345ft

Overall

9525

Males

7835

M45-49

7835

5K→10K

3.1 - 6.2 mi

Top 35%
×5stories
+79ft-138ft

Overall

9893

Males

8079

M45-49

8079

10K→15K

6.2 - 9.3 mi

Top 34%
×3stories
+67ft-78ft

Overall

9525

Males

7835

M45-49

7835

15K→20K

9.3 - 12.4 mi

Top 31%
×5stories
+106ft-86ft

Overall

8823

Males

7350

M45-49

7350

20K→Half

12.4 - 13.1 mi

Top 31%
×2stories
+19ft-37ft

Overall

8910

Males

7432

M45-49

7432

Half→25K

13.1 - 15.5 mi

Top 30%
×4stories
+66ft-88ft

Overall

8414

Males

7008

M45-49

7008

25K→30K

15.5 - 18.6 mi

Top 27%
×9stories
+181ft-148ft

Overall

7703

Males

6413

M45-49

6413

30K→20M

18.6 - 20.0 mi

Top 28%
×5stories
+64ft-50ft

Overall

8052

Males

6479

M45-49

6479

20M→21M

20.0 - 21.0 mi

Top 31%
×8stories
+106ft-24ft

Overall

8779

Males

6698

M45-49

6698

21M→35K

21.0 - 21.8 mi

Top 28%
×7stories
+17ft-86ft

Overall

7890

Males

6244

M45-49

6244

35K→23M

21.8 - 23.0 mi

Top 35%
×5stories
+23ft-63ft

Overall

9999

Males

7228

M45-49

7228

23M→24M

23.0 - 24.0 mi

Top 41%
×6stories
+12ft-82ft

Overall

11761

Males

8034

M45-49

8034

24M→40K

24.0 - 24.9 mi

Top 47%
×1story
+6ft-20ft

Overall

13261

Males

8636

M45-49

8636

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1story
+13ft-16ft

Overall

16723

Males

10206

M45-49

10206

25.2M→Finish

25.2 - 26.2 mi

Top 64%
×2stories
+22ft-21ft

Overall

18093

Males

10900

M45-49

10900

Passing Analysis

Category:
Athletes Passed
2314*
Passed By
1620
Net Change
+694
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10250
5K → 10K338160+178#10250#10072
10K → 15K291*83+208#10072#9864
15K → 20K36136+325#9864#9539
20K → Half4815+33#9539#9506
Half → 25K25643+213#9506#9293
25K → 30K45749+408#9293#8885
30K → 20M15640+116#8885#8769
20M → 21M10576+29#8769#8740
21M → 35K8724+63#8740#8677
35K → 23M109142-33#8677#8710
23M → 24M46179-133#8710#8843
24M → 40K41187-146#8843#8989
40K → 25.2M9163-154#8989#9143
25.2M → Finish10423-413#9143#9556
TOTALS2314*1620+694

* 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