Boston Marathon logo
BOSTON MARATHON 2025

William Cairns

Bib: 10584•M

NJ

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 36%
Division (M50-54)
#0 / 1996
Top 37%
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
7:09/mi
22:13
↑ 97↓ 3451.5%
10K· 6.21 mi
7:11/mi
44:32
↑ 79↓ 1380.4%
15K· 9.32 mi
7:13/mi
1:06:57
↑ 67↓ 78
20K· 12.43 mi
7:21/mi
1:29:48
↑ 106↓ 860.1%
Half· 13.11 mi
7:12/mi
1:34:43
↑ 19↓ 370.5%
25K· 15.53 mi
7:27/mi
1:52:46
↑ 66↓ 880.2%
30K· 18.64 mi
8:00/mi
2:17:36
↑ 181↓ 1480.2%
20M
8:05/mi
2:28:35
↑ 64↓ 500.2%
21M
8:55/mi
2:37:30
↑ 106↓ 241.6%
35K· 21.75 mi
7:59/mi
2:43:28
↑ 17↓ 861.7%
23M
8:15/mi
2:53:48
↑ 23↓ 630.6%
24M
7:46/mi
3:01:34
↓ 821.3%
40K· 24.85 mi
7:56/mi
3:08:21
↓ 200.3%
25.2M
8:30/mi
3:11:17
↑ 13↓ 160.2%
Finish· 26.22 mi
7:30/mi
3:18:56
↑ 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
Time1:34:43
Pace7:13 /mi
2nd Half
Distance13.11 mi
Time1:44:13
Pace7:57 /mi
📊Positive Split: 10.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:1322:137:0922:13
7:09
-
10K
6.21 mi11:10:3244:327:1022:19
7:11
+0:02
15K
9.32 mi11:32:571:06:577:1122:25
7:13
+0:02
20K
12.43 mi11:55:481:29:487:1422:51
7:21
+0:08
Half
13.11 mi12:00:431:34:437:134:55
7:12
-0:09
25K
15.53 mi12:18:461:52:467:1618:03
7:27
+0:15
30K
18.64 mi12:43:362:17:367:2324:50
8:00
+0:33
20M
20.00 mi12:54:352:28:357:2610:59
8:05
+0:05
21M
21.00 mi13:03:302:37:307:308:55
8:55
+0:50
35K
21.75 mi13:09:282:43:287:315:58
7:59
-0:56
23M
23.00 mi13:19:482:53:487:3310:20
8:15
+0:16
24M
24.00 mi13:27:343:01:347:347:46
7:46
-0:29
40K
24.85 mi13:34:213:08:217:356:47
7:56
+0:10
25.2M
25.20 mi13:37:173:11:177:352:56
8:30
+0:34
Finish
26.22 mi13:44:563:18:567:367:39
7:30
-1:00

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

7:09 /mi

Average Pace

7:36 /mi

Slowest Pace

8:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:00:25

61% of race

Time at Steady Pace

45:21

23% of race

Time at Slower Pace

33:10

17% of race

Average Pace: 7:35 /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 mi10:48:1322:137:0922:13
7:09
#9063
10K
6.21 mi11:10:3244:327:1022:19
7:11
#9166
15K
9.32 mi11:32:571:06:577:1122:25
7:13
#9183
20K
12.43 mi11:55:481:29:487:1422:51
7:21
#9210
Half
13.11 mi12:00:431:34:437:134:55
7:12
#9211
25K
15.53 mi12:18:461:52:467:1618:03
7:27
#9214
30K
18.64 mi12:43:362:17:367:2324:50
8:00
#9537
20M
20.00 mi12:54:352:28:357:2610:59
8:05
#9623
21M
21.00 mi13:03:302:37:307:308:55
8:55
#9795
35K
21.75 mi13:09:282:43:287:315:58
7:59
#9884
23M
23.00 mi13:19:482:53:487:3310:20
8:15
#9982
24M
24.00 mi13:27:343:01:347:347:46
7:46
#9924
40K
24.85 mi13:34:213:08:217:356:47
7:56
#9889
25.2M
25.20 mi13:37:173:11:177:352:56
8:30
#9857
Finish
26.22 mi13:44:563:18:567:367:39
7:30
#9792
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi9063764876489248(Top 33%)7683(Top 48%)7683(Top 385%)
10K6.21 mi3.10 mi9166-1037698-507698-509333(Top 33%)7787(Top 48%)7787(Top 390%)
15K9.32 mi3.11 mi9183-177692+67692+69248(Top 33%)7683(Top 48%)7683(Top 385%)
20K12.43 mi3.11 mi9210-277679+137679+139498(Top 33%)7739(Top 48%)7739(Top 388%)
Half13.11 mi0.68 mi9211-17675+47675+49121(Top 32%)7553(Top 47%)7553(Top 378%)
25K15.53 mi2.42 mi9214-37645+307645+309494(Top 33%)7595(Top 47%)7595(Top 381%)
30K18.64 mi3.11 mi9537-3237766-1217766-12111310(Top 40%)8342(Top 52%)8342(Top 418%)
20M20.00 mi1.36 mi9623-867774-87774-810955(Top 39%)8003(Top 50%)8003(Top 401%)
21M21.00 mi1.00 mi9795-1727842-687842-6812992(Top 46%)8830(Top 55%)8830(Top 442%)
35K21.75 mi0.75 mi9884-897859-177859-1712066(Top 42%)8346(Top 52%)8346(Top 418%)
23M23.00 mi1.25 mi9982-987854+57854+511709(Top 41%)8090(Top 50%)8090(Top 405%)
24M24.00 mi1.00 mi9924+587795+597795+599545(Top 34%)6937(Top 43%)6937(Top 348%)
40K24.85 mi0.85 mi9889+357736+597736+599678(Top 34%)6888(Top 43%)6888(Top 345%)
25.2M25.20 mi0.35 mi9857+327702+347702+348786(Top 31%)6345(Top 39%)6345(Top 318%)
Finish26.22 mi1.02 mi9792+657636+667636+669227(Top 32%)6572(Top 41%)6572(Top 329%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21story building
+97ft-345ft

Overall

9248

Males

7683

M50-54

7683

5K→10K

3.1 - 6.2 mi

Top 33%
×5story building
+79ft-138ft

Overall

9333

Males

7787

M50-54

7787

10K→15K

6.2 - 9.3 mi

Top 33%
×3story building
+67ft-78ft

Overall

9248

Males

7683

M50-54

7683

15K→20K

9.3 - 12.4 mi

Top 33%
×5story building
+106ft-86ft

Overall

9498

Males

7739

M50-54

7739

20K→Half

12.4 - 13.1 mi

Top 32%
×2story building
+19ft-37ft

Overall

9121

Males

7553

M50-54

7553

Half→25K

13.1 - 15.5 mi

Top 33%
×4story building
+66ft-88ft

Overall

9494

Males

7595

M50-54

7595

25K→30K

15.5 - 18.6 mi

Top 40%
×9story building
+181ft-148ft

Overall

11310

Males

8342

M50-54

8342

30K→20M

18.6 - 20.0 mi

Top 39%
×5story building
+64ft-50ft

Overall

10955

Males

8003

M50-54

8003

20M→21M

20.0 - 21.0 mi

Top 46%
×8story building
+106ft-24ft

Overall

12992

Males

8830

M50-54

8830

21M→35K

21.0 - 21.8 mi

Top 42%
×7story building
+17ft-86ft

Overall

12066

Males

8346

M50-54

8346

35K→23M

21.8 - 23.0 mi

Top 41%
×5story building
+23ft-63ft

Overall

11709

Males

8090

M50-54

8090

23M→24M

23.0 - 24.0 mi

Top 34%
×6story building
+12ft-82ft

Overall

9545

Males

6937

M50-54

6937

24M→40K

24.0 - 24.9 mi

Top 34%
×1story
+6ft-20ft

Overall

9678

Males

6888

M50-54

6888

40K→25.2M

24.9 - 25.2 mi

Top 31%
×1story
+13ft-16ft

Overall

8786

Males

6345

M50-54

6345

25.2M→Finish

25.2 - 26.2 mi

Top 32%
×2story building
+22ft-21ft

Overall

9227

Males

6572

M50-54

6572

Passing Analysis

Category:
Athletes Passed
1429
Passed By
2155
Net Change
-729
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9063
5K → 10K184287-103#9063#9166
10K → 15K154171-17#9166#9183
15K → 20K162189-27#9183#9210
20K → Half3435-1#9210#9211
Half → 25K158161-3#9211#9214
25K → 30K136459-323#9214#9537
30K → 20M80166-86#9537#9623
20M → 21M49221-172#9623#9795
21M → 35K45133-89#9795#9884
35K → 23M78175-98#9884#9982
23M → 24M10648+58#9982#9924
24M → 40K9256+35#9924#9889
40K → 25.2M4715+32#9889#9857
25.2M → Finish10439+65#9857#9792
TOTALS14292155-729
📊

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

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing