Boston Marathon logo
BOSTON MARATHON 2025

Randy Stofberg

Bib: 8076•M

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Top 26%
Gender (Male)
#0 / 16105
Top 39%
Masters (Masters Men)
#0 / 10463
Top 26%
Division (M40-44)
#0 / 2247
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:14
Rank: #6590
Start → 5K
21:14 | 6:50/mi
10K· 6.21 mi
42:24
Rank: #6518 (+72)
5K → 10K
21:10 | 6:49/mi
15K· 9.32 mi
1:04:12
Rank: #6979 (-461)
10K → 15K
21:48 | 7:01/mi
20K· 12.43 mi
1:26:59
Rank: #7497 (-518)
15K → 20K
22:47 | 7:20/mi
Half· 13.11 mi
1:31:53
Rank: #7549 (-52)
20K → Half
4:54 | 7:11/mi
25K· 15.53 mi
1:50:06
Rank: #7838 (-289)
Half → 25K
18:13 | 7:31/mi
30K· 18.64 mi
2:13:40
Rank: #7829 (+9)
25K → 30K
23:34 | 7:35/mi
20M
2:23:49
Rank: #7681 (+148)
30K → 20M
10:09 | 7:28/mi
21M
2:31:50
Rank: #7601 (+80)
20M → 21M
8:01 | 8:01/mi
35K· 21.75 mi
2:37:27
Rank: #7602 (-1)
21M → 35K
5:37 | 7:30/mi
23M
2:47:01
Rank: #7538 (+64)
35K → 23M
9:34 | 7:38/mi
24M
2:54:36
Rank: #7533 (+5)
23M → 24M
7:35 | 7:35/mi
40K· 24.85 mi
3:01:12
Rank: #7520 (+13)
24M → 40K
6:36 | 7:43/mi
25.2M
3:04:04
Rank: #7497 (+23)
40K → 25.2M
2:52 | 8:19/mi
Finish· 26.22 mi
3:11:33
Rank: #7486 (+11)
25.2M → Finish
7:29 | 7:21/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
Time1:31:53
Pace7:01 /mi
2nd Half
Distance13.11 mi
Time1:39:40
Pace7:36 /mi
📊Positive Split: 8.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:30:0221:146:5021:14
6:50
-
10K
6.21 mi10:51:1242:246:4921:10
6:49
-0:01
15K
9.32 mi11:13:001:04:126:5321:48
7:01
+0:12
20K
12.43 mi11:35:471:26:597:0022:47
7:20
+0:19
Half
13.11 mi11:40:411:31:537:014:54
7:11
-0:09
25K
15.53 mi11:58:541:50:067:0518:13
7:31
+0:20
30K
18.64 mi12:22:282:13:407:1023:34
7:35
+0:04
20M
20.00 mi12:32:372:23:497:1110:09
7:28
-0:07
21M
21.00 mi12:40:382:31:507:148:01
8:01
+0:33
35K
21.75 mi12:46:152:37:277:145:37
7:30
-0:31
23M
23.00 mi12:55:492:47:017:169:34
7:38
+0:08
24M
24.00 mi13:03:242:54:367:177:35
7:35
-0:03
40K
24.85 mi13:10:003:01:127:176:36
7:43
+0:08
25.2M
25.20 mi13:12:523:04:047:182:52
8:19
+0:36
Finish
26.22 mi13:20:213:11:337:197:29
7:21
-0:58

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

6:49 /mi

Average Pace

7:19 /mi

Slowest Pace

8:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:09:06

36% of race

Time at Steady Pace

1:44:58

55% of race

Time at Slower Pace

17:29

9% of race

Average Pace: 7:18 /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 mi10:30:0221:146:5021:14
6:50
#6590
10K
6.21 mi10:51:1242:246:4921:10
6:49
#6518
15K
9.32 mi11:13:001:04:126:5321:48
7:01
#6979
20K
12.43 mi11:35:471:26:597:0022:47
7:20
#7497
Half
13.11 mi11:40:411:31:537:014:54
7:11
#7549
25K
15.53 mi11:58:541:50:067:0518:13
7:31
#7838
30K
18.64 mi12:22:282:13:407:1023:34
7:35
#7829
20M
20.00 mi12:32:372:23:497:1110:09
7:28
#7681
21M
21.00 mi12:40:382:31:507:148:01
8:01
#7601
35K
21.75 mi12:46:152:37:277:145:37
7:30
#7602
23M
23.00 mi12:55:492:47:017:169:34
7:38
#7538
24M
24.00 mi13:03:242:54:367:177:35
7:35
#7533
40K
24.85 mi13:10:003:01:127:176:36
7:43
#7520
25.2M
25.20 mi13:12:523:04:047:182:52
8:19
#7497
Finish
26.22 mi13:20:213:11:337:197:29
7:21
#7486
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi6590599059907727(Top 27%)6760(Top 42%)6760(Top 301%)
10K6.21 mi3.10 mi6518+725928+625928+626518(Top 23%)5895(Top 37%)5895(Top 262%)
15K9.32 mi3.11 mi6979-4616269-3416269-3417727(Top 27%)6760(Top 42%)6760(Top 301%)
20K12.43 mi3.11 mi7497-5186628-3596628-3599287(Top 33%)7614(Top 47%)7614(Top 339%)
Half13.11 mi0.68 mi7549-526657-296657-298862(Top 31%)7384(Top 46%)7384(Top 329%)
25K15.53 mi2.42 mi7838-2896831-1746831-17410060(Top 35%)7903(Top 49%)7903(Top 352%)
30K18.64 mi3.11 mi7829+96773+586773+588327(Top 29%)6779(Top 42%)6779(Top 302%)
20M20.00 mi1.36 mi7681+1486644+1296644+1296789(Top 24%)5701(Top 35%)5701(Top 254%)
21M21.00 mi1.00 mi7601+806551+936551+937407(Top 26%)5910(Top 37%)5910(Top 263%)
35K21.75 mi0.75 mi7602-16534+176534+178630(Top 30%)6639(Top 41%)6639(Top 295%)
23M23.00 mi1.25 mi7538+646448+866448+867492(Top 26%)5861(Top 36%)5861(Top 261%)
24M24.00 mi1.00 mi7533+56407+416407+418257(Top 29%)6247(Top 39%)6247(Top 278%)
40K24.85 mi0.85 mi7520+136366+416366+418171(Top 29%)6070(Top 38%)6070(Top 270%)
25.2M25.20 mi0.35 mi7497+236337+296337+297637(Top 27%)5696(Top 35%)5696(Top 253%)
Finish26.22 mi1.02 mi7486+116298+396298+398041(Top 28%)5926(Top 37%)5926(Top 264%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 27%
×21stories
+97ft-345ft

Overall

7727

Males

6760

M40-44

6760

5K→10K

3.1 - 6.2 mi

Top 23%
×5stories
+79ft-138ft

Overall

6518

Males

5895

M40-44

5895

10K→15K

6.2 - 9.3 mi

Top 27%
×3stories
+67ft-78ft

Overall

7727

Males

6760

M40-44

6760

15K→20K

9.3 - 12.4 mi

Top 33%
×5stories
+106ft-86ft

Overall

9287

Males

7614

M40-44

7614

20K→Half

12.4 - 13.1 mi

Top 31%
×2stories
+19ft-37ft

Overall

8862

Males

7384

M40-44

7384

Half→25K

13.1 - 15.5 mi

Top 35%
×4stories
+66ft-88ft

Overall

10060

Males

7903

M40-44

7903

25K→30K

15.5 - 18.6 mi

Top 29%
×9stories
+181ft-148ft

Overall

8327

Males

6779

M40-44

6779

30K→20M

18.6 - 20.0 mi

Top 24%
×5stories
+64ft-50ft

Overall

6789

Males

5701

M40-44

5701

20M→21M

20.0 - 21.0 mi

Top 26%
×8stories
+106ft-24ft

Overall

7407

Males

5910

M40-44

5910

21M→35K

21.0 - 21.8 mi

Top 30%
×7stories
+17ft-86ft

Overall

8630

Males

6639

M40-44

6639

35K→23M

21.8 - 23.0 mi

Top 26%
×5stories
+23ft-63ft

Overall

7492

Males

5861

M40-44

5861

23M→24M

23.0 - 24.0 mi

Top 29%
×6stories
+12ft-82ft

Overall

8257

Males

6247

M40-44

6247

24M→40K

24.0 - 24.9 mi

Top 29%
×1story
+6ft-20ft

Overall

8171

Males

6070

M40-44

6070

40K→25.2M

24.9 - 25.2 mi

Top 27%
×1story
+13ft-16ft

Overall

7637

Males

5696

M40-44

5696

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2stories
+22ft-21ft

Overall

8041

Males

5926

M40-44

5926

Passing Analysis

Category:
Athletes Passed
1305
Passed By
2201
Net Change
-896
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6590
5K → 10K220148+72#6590#6518
10K → 15K45506-461#6518#6979
15K → 20K39557-518#6979#7497
20K → Half1365-52#7497#7549
Half → 25K46335-289#7549#7838
25K → 30K200191+9#7838#7829
30K → 20M16921+148#7829#7681
20M → 21M12949+80#7681#7601
21M → 35K5859-1#7601#7602
35K → 23M12460+64#7602#7538
23M → 24M7570+5#7538#7533
24M → 40K7057+13#7533#7520
40K → 25.2M4724+23#7520#7497
25.2M → Finish7059+11#7497#7486
TOTALS13052201-896
📊

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