Boston Marathon logo
BOSTON MARATHON 2025

Darren Cox

Bib: 6667•M

ON

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Top 22%
Gender (Male)
#0 / 16105
Top 34%
Masters (Masters Men)
#0 / 10463
Top 20%
Division (M40-44)
#0 / 2247
Top 46%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:19
Rank: #6768
Start → 5K
21:19 | 6:52/mi
10K· 6.21 mi
42:45
Rank: #7004 (-236)
5K → 10K
21:26 | 6:54/mi
15K· 9.32 mi
1:04:16
Rank: #7026 (-22)
10K → 15K
21:31 | 6:56/mi
20K· 12.43 mi
1:25:54
Rank: #6909 (+117)
15K → 20K
21:38 | 6:58/mi
Half· 13.11 mi
1:30:40
Rank: #6946 (-37)
20K → Half
4:46 | 6:59/mi
25K· 15.53 mi
1:47:34
Rank: #6758 (+188)
Half → 25K
16:54 | 6:58/mi
30K· 18.64 mi
2:11:05
Rank: #6868 (-110)
25K → 30K
23:31 | 7:34/mi
20M
2:21:05
Rank: #6730 (+138)
30K → 20M
10:00 | 7:22/mi
21M
2:29:02
Rank: #6677 (+53)
20M → 21M
7:57 | 7:57/mi
35K· 21.75 mi
2:34:19
Rank: #6599 (+78)
21M → 35K
5:17 | 7:04/mi
23M
2:43:29
Rank: #6461 (+138)
35K → 23M
9:10 | 7:19/mi
24M
2:50:40
Rank: #6373 (+88)
23M → 24M
7:11 | 7:11/mi
40K· 24.85 mi
2:56:53
Rank: #6300 (+73)
24M → 40K
6:13 | 7:16/mi
25.2M
2:59:41
Rank: #6282 (+18)
40K → 25.2M
2:48 | 8:07/mi
Finish· 26.22 mi
3:07:09
Rank: #6260 (+22)
25.2M → Finish
7:28 | 7:20/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
Time1:30:40
Pace6:55 /mi
2nd Half
Distance13.11 mi
Time1:36:29
Pace7:22 /mi
📊Positive Split: 6.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:1321:196:5221:19
6:52
-
10K
6.21 mi11:08:3942:456:5321:26
6:54
+0:02
15K
9.32 mi11:30:101:04:166:5421:31
6:56
+0:02
20K
12.43 mi11:51:481:25:546:5521:38
6:58
+0:02
Half
13.11 mi11:56:341:30:406:554:46
6:59
+0:01
25K
15.53 mi12:13:281:47:346:5516:54
6:58
-0:01
30K
18.64 mi12:36:592:11:057:0223:31
7:34
+0:36
20M
20.00 mi12:46:592:21:057:0310:00
7:22
-0:12
21M
21.00 mi12:54:562:29:027:067:57
7:57
+0:35
35K
21.75 mi13:00:132:34:197:065:17
7:04
-0:53
23M
23.00 mi13:09:232:43:297:069:10
7:19
+0:15
24M
24.00 mi13:16:342:50:407:077:11
7:11
-0:08
40K
24.85 mi13:22:472:56:537:076:13
7:16
+0:05
25.2M
25.20 mi13:25:352:59:417:082:48
8:07
+0:51
Finish
26.22 mi13:33:033:07:097:097:28
7:20
-0:47

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

6:52 /mi

Average Pace

7:09 /mi

Slowest Pace

8:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:32:53

82% of race

Time at Steady Pace

31:28

17% of race

Time at Slower Pace

2:48

1% of race

Average Pace: 7:08 /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 mi10:47:1321:196:5221:19
6:52
#6768
10K
6.21 mi11:08:3942:456:5321:26
6:54
#7004
15K
9.32 mi11:30:101:04:166:5421:31
6:56
#7026
20K
12.43 mi11:51:481:25:546:5521:38
6:58
#6909
Half
13.11 mi11:56:341:30:406:554:46
6:59
#6946
25K
15.53 mi12:13:281:47:346:5516:54
6:58
#6758
30K
18.64 mi12:36:592:11:057:0223:31
7:34
#6868
20M
20.00 mi12:46:592:21:057:0310:00
7:22
#6730
21M
21.00 mi12:54:562:29:027:067:57
7:57
#6677
35K
21.75 mi13:00:132:34:197:065:17
7:04
#6599
23M
23.00 mi13:09:232:43:297:069:10
7:19
#6461
24M
24.00 mi13:16:342:50:407:077:11
7:11
#6373
40K
24.85 mi13:22:472:56:537:076:13
7:16
#6300
25.2M
25.20 mi13:25:352:59:417:082:48
8:07
#6282
Finish
26.22 mi13:33:033:07:097:097:28
7:20
#6260
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi6768613361337113(Top 25%)6331(Top 39%)6331(Top 282%)
10K6.21 mi3.10 mi7004-2366294-1616294-1617216(Top 25%)6444(Top 40%)6444(Top 287%)
15K9.32 mi3.11 mi7026-226306-126306-127113(Top 25%)6331(Top 39%)6331(Top 282%)
20K12.43 mi3.11 mi6909+1176211+956211+956650(Top 23%)5940(Top 37%)5940(Top 264%)
Half13.11 mi0.68 mi6946-376234-236234-237412(Top 26%)6502(Top 40%)6502(Top 289%)
25K15.53 mi2.42 mi6758+1886069+1656069+1656106(Top 21%)5478(Top 34%)5478(Top 244%)
30K18.64 mi3.11 mi6868-1106106-376106-378195(Top 29%)6697(Top 42%)6697(Top 298%)
20M20.00 mi1.36 mi6730+1385982+1245982+1246114(Top 22%)5270(Top 33%)5270(Top 235%)
21M21.00 mi1.00 mi6677+535920+625920+627047(Top 25%)5698(Top 35%)5698(Top 254%)
35K21.75 mi0.75 mi6599+785847+735847+735741(Top 20%)4877(Top 30%)4877(Top 217%)
23M23.00 mi1.25 mi6461+1385726+1215726+1215564(Top 20%)4708(Top 29%)4708(Top 210%)
24M24.00 mi1.00 mi6373+885638+885638+885699(Top 20%)4724(Top 29%)4724(Top 210%)
40K24.85 mi0.85 mi6300+735567+715567+715473(Top 19%)4533(Top 28%)4533(Top 202%)
25.2M25.20 mi0.35 mi6282+185538+295538+296523(Top 23%)5052(Top 31%)5052(Top 225%)
Finish26.22 mi1.02 mi6260+225496+425496+427921(Top 28%)5855(Top 36%)5855(Top 261%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 25%
×21stories
+97ft-345ft

Overall

7113

Males

6331

M40-44

6331

5K→10K

3.1 - 6.2 mi

Top 25%
×5stories
+79ft-138ft

Overall

7216

Males

6444

M40-44

6444

10K→15K

6.2 - 9.3 mi

Top 25%
×3stories
+67ft-78ft

Overall

7113

Males

6331

M40-44

6331

15K→20K

9.3 - 12.4 mi

Top 23%
×5stories
+106ft-86ft

Overall

6650

Males

5940

M40-44

5940

20K→Half

12.4 - 13.1 mi

Top 26%
×2stories
+19ft-37ft

Overall

7412

Males

6502

M40-44

6502

Half→25K

13.1 - 15.5 mi

Top 21%
×4stories
+66ft-88ft

Overall

6106

Males

5478

M40-44

5478

25K→30K

15.5 - 18.6 mi

Top 29%
×9stories
+181ft-148ft

Overall

8195

Males

6697

M40-44

6697

30K→20M

18.6 - 20.0 mi

Top 22%
×5stories
+64ft-50ft

Overall

6114

Males

5270

M40-44

5270

20M→21M

20.0 - 21.0 mi

Top 25%
×8stories
+106ft-24ft

Overall

7047

Males

5698

M40-44

5698

21M→35K

21.0 - 21.8 mi

Top 20%
×7stories
+17ft-86ft

Overall

5741

Males

4877

M40-44

4877

35K→23M

21.8 - 23.0 mi

Top 20%
×5stories
+23ft-63ft

Overall

5564

Males

4708

M40-44

4708

23M→24M

23.0 - 24.0 mi

Top 20%
×6stories
+12ft-82ft

Overall

5699

Males

4724

M40-44

4724

24M→40K

24.0 - 24.9 mi

Top 19%
×1story
+6ft-20ft

Overall

5473

Males

4533

M40-44

4533

40K→25.2M

24.9 - 25.2 mi

Top 23%
×1story
+13ft-16ft

Overall

6523

Males

5052

M40-44

5052

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2stories
+22ft-21ft

Overall

7921

Males

5855

M40-44

5855

Passing Analysis

Category:
Athletes Passed
1635
Passed By
1127
Net Change
+508
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6768
5K → 10K118354-236#6768#7004
10K → 15K131153-22#7004#7026
15K → 20K20386+117#7026#6909
20K → Half1350-37#6909#6946
Half → 25K21830+188#6946#6758
25K → 30K141251-110#6758#6868
30K → 20M15719+138#6868#6730
20M → 21M9845+53#6730#6677
21M → 35K9214+78#6677#6599
35K → 23M15517+138#6599#6461
23M → 24M10517+88#6461#6373
24M → 40K9017+73#6373#6300
40K → 25.2M4224+18#6300#6282
25.2M → Finish7250+22#6282#6260
TOTALS16351127+508
📊

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