Boston Marathon logo
BOSTON MARATHON 2025

Stanley Thomas

Bib: 18188•M

MO

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
7:53/mi
24:28
↑ 97↓ 3451.5%
10K· 6.21 mi
8:09/mi
49:48
↑ 79↓ 1380.4%
15K· 9.32 mi
8:13/mi
1:15:20
↑ 67↓ 78
20K· 12.43 mi
8:20/mi
1:41:12
↑ 106↓ 860.1%
Half· 13.11 mi
8:10/mi
1:46:46
↑ 19↓ 370.5%
25K· 15.53 mi
8:20/mi
2:06:58
↑ 66↓ 880.2%
30K· 18.64 mi
8:27/mi
2:33:13
↑ 181↓ 1480.2%
20M
8:31/mi
2:44:47
↑ 64↓ 500.2%
21M
9:12/mi
2:53:59
↑ 106↓ 241.6%
35K· 21.75 mi
8:41/mi
3:00:29
↑ 17↓ 861.7%
23M
9:21/mi
3:12:11
↑ 23↓ 630.6%
24M
8:59/mi
3:21:10
↓ 821.3%
40K· 24.85 mi
9:17/mi
3:29:06
↓ 200.3%
25.2M
10:09/mi
3:32:36
↑ 13↓ 160.2%
Finish· 26.22 mi
9:08/mi
3:41:54
↑ 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
Time1:46:46
Pace8:09 /mi
2nd Half
Distance13.11 mi
Time1:55:08
Pace8:47 /mi
📊Positive Split: 7.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:1524:287:5324:28
7:53
-
10K
6.21 mi11:40:3549:488:0125:20
8:09
+0:16
15K
9.32 mi12:06:071:15:208:0525:32
8:13
+0:04
20K
12.43 mi12:31:591:41:128:0925:52
8:20
+0:07
Half
13.11 mi12:37:331:46:468:095:34
8:10
-0:10
25K
15.53 mi12:57:452:06:588:1020:12
8:20
+0:10
30K
18.64 mi13:24:002:33:138:1326:15
8:27
+0:07
20M
20.00 mi13:35:342:44:478:1411:34
8:31
+0:04
21M
21.00 mi13:44:462:53:598:179:12
9:12
+0:41
35K
21.75 mi13:51:163:00:298:186:30
8:41
-0:31
23M
23.00 mi14:02:583:12:118:2111:42
9:21
+0:40
24M
24.00 mi14:11:573:21:108:238:59
8:59
-0:22
40K
24.85 mi14:19:533:29:068:257:56
9:17
+0:18
25.2M
25.20 mi14:23:233:32:368:263:30
10:09
+0:52
Finish
26.22 mi14:32:413:41:548:289:18
9:08
-1:01

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

7:53 /mi

Average Pace

8:28 /mi

Slowest Pace

10:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:20:54

36% of race

Time at Steady Pace

1:30:23

41% of race

Time at Slower Pace

50:37

23% of race

Average Pace: 8:28 /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 mi11:15:1524:287:5324:28
7:53
#15456
10K
6.21 mi11:40:3549:488:0125:20
8:09
#16631
15K
9.32 mi12:06:071:15:208:0525:32
8:13
#16943
20K
12.43 mi12:31:591:41:128:0925:52
8:20
#16989
Half
13.11 mi12:37:331:46:468:095:34
8:10
#16981
25K
15.53 mi12:57:452:06:588:1020:12
8:20
#16792
30K
18.64 mi13:24:002:33:138:1326:15
8:27
#16341
20M
20.00 mi13:35:342:44:478:1411:34
8:31
#16133
21M
21.00 mi13:44:462:53:598:179:12
9:12
#15980
35K
21.75 mi13:51:163:00:298:186:30
8:41
#15972
23M
23.00 mi14:02:583:12:118:2111:42
9:21
#16046
24M
24.00 mi14:11:573:21:108:238:59
8:59
#16093
40K
24.85 mi14:19:533:29:068:257:56
9:17
#16156
25.2M
25.20 mi14:23:233:32:368:263:30
10:09
#16186
Finish
26.22 mi14:32:413:41:548:289:18
9:08
#16336
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi15456106031060317487(Top 62%)11430(Top 71%)11430(Top 694%)
10K6.21 mi3.10 mi16631-117511068-46511068-46517567(Top 62%)11473(Top 71%)11473(Top 696%)
15K9.32 mi3.11 mi16943-31211208-14011208-14017487(Top 62%)11430(Top 71%)11430(Top 694%)
20K12.43 mi3.11 mi16989-4611204+411204+417077(Top 60%)11212(Top 70%)11212(Top 680%)
Half13.11 mi0.68 mi16981+811196+811196+816973(Top 60%)11164(Top 69%)11164(Top 677%)
25K15.53 mi2.42 mi16792+18911100+9611100+9616109(Top 57%)10692(Top 66%)10692(Top 649%)
30K18.64 mi3.11 mi16341+45110857+24310857+24314440(Top 51%)9802(Top 61%)9802(Top 595%)
20M20.00 mi1.36 mi16133+20810743+11410743+11413869(Top 49%)9392(Top 58%)9392(Top 570%)
21M21.00 mi1.00 mi15980+15310646+9710646+9714617(Top 51%)9628(Top 60%)9628(Top 584%)
35K21.75 mi0.75 mi15972+810622+2410622+2416585(Top 58%)10433(Top 65%)10433(Top 633%)
23M23.00 mi1.25 mi16046-74106221062217976(Top 63%)10954(Top 68%)10954(Top 665%)
24M24.00 mi1.00 mi16093-4710619+310619+317257(Top 61%)10587(Top 66%)10587(Top 642%)
40K24.85 mi0.85 mi16156-6310625-610625-617722(Top 62%)10693(Top 66%)10693(Top 649%)
25.2M25.20 mi0.35 mi16186-30106251062517634(Top 62%)10657(Top 66%)10657(Top 647%)
Finish26.22 mi1.02 mi16336-15010665-4010665-4019601(Top 69%)11626(Top 72%)11626(Top 705%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 62%
×21story building
+97ft-345ft

Overall

17487

Males

11430

M55-59

11430

5K→10K

3.1 - 6.2 mi

Top 62%
×5story building
+79ft-138ft

Overall

17567

Males

11473

M55-59

11473

10K→15K

6.2 - 9.3 mi

Top 62%
×3story building
+67ft-78ft

Overall

17487

Males

11430

M55-59

11430

15K→20K

9.3 - 12.4 mi

Top 60%
×5story building
+106ft-86ft

Overall

17077

Males

11212

M55-59

11212

20K→Half

12.4 - 13.1 mi

Top 60%
×2story building
+19ft-37ft

Overall

16973

Males

11164

M55-59

11164

Half→25K

13.1 - 15.5 mi

Top 57%
×4story building
+66ft-88ft

Overall

16109

Males

10692

M55-59

10692

25K→30K

15.5 - 18.6 mi

Top 51%
×9story building
+181ft-148ft

Overall

14440

Males

9802

M55-59

9802

30K→20M

18.6 - 20.0 mi

Top 49%
×5story building
+64ft-50ft

Overall

13869

Males

9392

M55-59

9392

20M→21M

20.0 - 21.0 mi

Top 51%
×8story building
+106ft-24ft

Overall

14617

Males

9628

M55-59

9628

21M→35K

21.0 - 21.8 mi

Top 58%
×7story building
+17ft-86ft

Overall

16585

Males

10433

M55-59

10433

35K→23M

21.8 - 23.0 mi

Top 63%
×5story building
+23ft-63ft

Overall

17976

Males

10954

M55-59

10954

23M→24M

23.0 - 24.0 mi

Top 61%
×6story building
+12ft-82ft

Overall

17257

Males

10587

M55-59

10587

24M→40K

24.0 - 24.9 mi

Top 62%
×1story
+6ft-20ft

Overall

17722

Males

10693

M55-59

10693

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1story
+13ft-16ft

Overall

17634

Males

10657

M55-59

10657

25.2M→Finish

25.2 - 26.2 mi

Top 69%
×2story building
+22ft-21ft

Overall

19601

Males

11626

M55-59

11626

Passing Analysis

Category:
Athletes Passed
1870
Passed By
2750
Net Change
-880
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15456
5K → 10K551230-1175#15456#16631
10K → 15K124436-312#16631#16943
15K → 20K177223-46#16943#16989
20K → Half4032+8#16989#16981
Half → 25K24354+189#16981#16792
25K → 30K49544+451#16792#16341
30K → 20M22820+208#16341#16133
20M → 21M18229+153#16133#15980
21M → 35K7668+8#15980#15972
35K → 23M88162-74#15972#16046
23M → 24M54101-47#16046#16093
24M → 40K47110-63#16093#16156
40K → 25.2M2454-30#16156#16186
25.2M → Finish37187-150#16186#16336
TOTALS18702750-880
📊

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
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing