Boston Marathon logo
BOSTON MARATHON 2025

Calvin Cook

Bib: 5939•M

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 10%
Gender (Male)
#0 / 16105
Top 17%
Division (M18-39)
#0 / 5642
Top 39%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:17
Rank: #4030
Start → 5K
20:17 | 6:32/mi
10K· 6.21 mi
40:21
Rank: #3725 (+305)
5K → 10K
20:04 | 6:28/mi
15K· 9.32 mi
1:00:19
Rank: #3467 (+258)
10K → 15K
19:58 | 6:26/mi
20K· 12.43 mi
1:20:22
Rank: #3266 (+201)
15K → 20K
20:03 | 6:27/mi
Half· 13.11 mi
1:24:41
Rank: #3229 (+37)
20K → Half
4:19 | 6:20/mi
25K· 15.53 mi
1:40:28
Rank: #3175 (+54)
Half → 25K
15:47 | 6:31/mi
30K· 18.64 mi
2:01:35
Rank: #3169 (+6)
25K → 30K
21:07 | 6:48/mi
20M
2:11:00
Rank: #3159 (+10)
30K → 20M
9:25 | 6:56/mi
21M
2:18:21
Rank: #3157 (+2)
20M → 21M
7:21 | 7:21/mi
35K· 21.75 mi
2:23:24
Rank: #3166 (-9)
21M → 35K
5:03 | 6:45/mi
23M
2:31:57
Rank: #3078 (+88)
35K → 23M
8:33 | 6:50/mi
24M
2:38:35
Rank: #3025 (+53)
23M → 24M
6:38 | 6:38/mi
40K· 24.85 mi
2:44:23
Rank: #2977 (+48)
24M → 40K
5:48 | 6:47/mi
25.2M
2:46:57
Rank: #2957 (+20)
40K → 25.2M
2:34 | 7:27/mi
Finish· 26.22 mi
2:53:41
Rank: #2942 (+15)
25.2M → Finish
6:44 | 6:36/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
Time1:24:41
Pace6:28 /mi
2nd Half
Distance13.11 mi
Time1:29:00
Pace6:47 /mi
📊Positive Split: 5.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:1120:176:3220:17
6:32
-
10K
6.21 mi10:45:1540:216:3020:04
6:28
-0:04
15K
9.32 mi11:05:131:00:196:2819:58
6:26
-0:02
20K
12.43 mi11:25:161:20:226:2820:03
6:27
+0:01
Half
13.11 mi11:29:351:24:416:284:19
6:20
-0:07
25K
15.53 mi11:45:221:40:286:2815:47
6:31
+0:11
30K
18.64 mi12:06:292:01:356:3121:07
6:48
+0:17
20M
20.00 mi12:15:542:11:006:339:25
6:56
+0:08
21M
21.00 mi12:23:152:18:216:357:21
7:21
+0:25
35K
21.75 mi12:28:182:23:246:365:03
6:45
-0:36
23M
23.00 mi12:36:512:31:576:368:33
6:50
+0:05
24M
24.00 mi12:43:292:38:356:366:38
6:38
-0:12
40K
24.85 mi12:49:172:44:236:375:48
6:47
+0:09
25.2M
25.20 mi12:51:512:46:576:382:34
7:27
+0:40
Finish
26.22 mi12:58:352:53:416:386:44
6:36
-0:51

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

6:20 /mi

Average Pace

6:38 /mi

Slowest Pace

7:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:43:46

94% of race

Time at Steady Pace

9:55

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:37 /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 mi10:25:1120:176:3220:17
6:32
#4030
10K
6.21 mi10:45:1540:216:3020:04
6:28
#3725
15K
9.32 mi11:05:131:00:196:2819:58
6:26
#3467
20K
12.43 mi11:25:161:20:226:2820:03
6:27
#3266
Half
13.11 mi11:29:351:24:416:284:19
6:20
#3229
25K
15.53 mi11:45:221:40:286:2815:47
6:31
#3175
30K
18.64 mi12:06:292:01:356:3121:07
6:48
#3169
20M
20.00 mi12:15:542:11:006:339:25
6:56
#3159
21M
21.00 mi12:23:152:18:216:357:21
7:21
#3157
35K
21.75 mi12:28:182:23:246:365:03
6:45
#3166
23M
23.00 mi12:36:512:31:576:368:33
6:50
#3078
24M
24.00 mi12:43:292:38:356:366:38
6:38
#3025
40K
24.85 mi12:49:172:44:236:375:48
6:47
#2977
25.2M
25.20 mi12:51:512:46:576:382:34
7:27
#2957
Finish
26.22 mi12:58:352:53:416:386:44
6:36
#2942
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4030380038003094(Top 11%)2946(Top 18%)2946(Top 52%)
10K6.21 mi3.10 mi3725+3053529+2713529+2713417(Top 12%)3241(Top 20%)3241(Top 57%)
15K9.32 mi3.11 mi3467+2583291+2383291+2383094(Top 11%)2946(Top 18%)2946(Top 52%)
20K12.43 mi3.11 mi3266+2013109+1823109+1822831(Top 10%)2695(Top 17%)2695(Top 48%)
Half13.11 mi0.68 mi3229+373075+343075+342638(Top 9%)2521(Top 16%)2521(Top 45%)
25K15.53 mi2.42 mi3175+543024+513024+512931(Top 10%)2787(Top 17%)2787(Top 49%)
30K18.64 mi3.11 mi3169+63012+123012+123409(Top 12%)3175(Top 20%)3175(Top 56%)
20M20.00 mi1.36 mi3159+102992+202992+203654(Top 13%)3360(Top 21%)3360(Top 60%)
21M21.00 mi1.00 mi3157+22990+22990+23828(Top 13%)3478(Top 22%)3478(Top 62%)
35K21.75 mi0.75 mi3166-92997-72997-73760(Top 13%)3382(Top 21%)3382(Top 60%)
23M23.00 mi1.25 mi3078+882911+862911+862835(Top 10%)2597(Top 16%)2597(Top 46%)
24M24.00 mi1.00 mi3025+532861+502861+502630(Top 9%)2413(Top 15%)2413(Top 43%)
40K24.85 mi0.85 mi2977+482811+502811+502743(Top 10%)2487(Top 15%)2487(Top 44%)
25.2M25.20 mi0.35 mi2957+202793+182793+183097(Top 11%)2738(Top 17%)2738(Top 49%)
Finish26.22 mi1.02 mi2942+152778+152778+153353(Top 12%)2937(Top 18%)2937(Top 52%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 11%
×21stories
+97ft-345ft

Overall

3094

Males

2946

M18-39

2946

5K→10K

3.1 - 6.2 mi

Top 12%
×5stories
+79ft-138ft

Overall

3417

Males

3241

M18-39

3241

10K→15K

6.2 - 9.3 mi

Top 11%
×3stories
+67ft-78ft

Overall

3094

Males

2946

M18-39

2946

15K→20K

9.3 - 12.4 mi

Top 10%
×5stories
+106ft-86ft

Overall

2831

Males

2695

M18-39

2695

20K→Half

12.4 - 13.1 mi

Top 9%
×2stories
+19ft-37ft

Overall

2638

Males

2521

M18-39

2521

Half→25K

13.1 - 15.5 mi

Top 10%
×4stories
+66ft-88ft

Overall

2931

Males

2787

M18-39

2787

25K→30K

15.5 - 18.6 mi

Top 12%
×9stories
+181ft-148ft

Overall

3409

Males

3175

M18-39

3175

30K→20M

18.6 - 20.0 mi

Top 13%
×5stories
+64ft-50ft

Overall

3654

Males

3360

M18-39

3360

20M→21M

20.0 - 21.0 mi

Top 13%
×8stories
+106ft-24ft

Overall

3828

Males

3478

M18-39

3478

21M→35K

21.0 - 21.8 mi

Top 13%
×7stories
+17ft-86ft

Overall

3760

Males

3382

M18-39

3382

35K→23M

21.8 - 23.0 mi

Top 10%
×5stories
+23ft-63ft

Overall

2835

Males

2597

M18-39

2597

23M→24M

23.0 - 24.0 mi

Top 9%
×6stories
+12ft-82ft

Overall

2630

Males

2413

M18-39

2413

24M→40K

24.0 - 24.9 mi

Top 10%
×1story
+6ft-20ft

Overall

2743

Males

2487

M18-39

2487

40K→25.2M

24.9 - 25.2 mi

Top 11%
×1story
+13ft-16ft

Overall

3097

Males

2738

M18-39

2738

25.2M→Finish

25.2 - 26.2 mi

Top 12%
×2stories
+22ft-21ft

Overall

3353

Males

2937

M18-39

2937

Passing Analysis

Category:
Athletes Passed
1543
Passed By
455
Net Change
+1088
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4030
5K → 10K34035+305#4030#3725
10K → 15K27820+258#3725#3467
15K → 20K21716+201#3467#3266
20K → Half414+37#3266#3229
Half → 25K10248+54#3229#3175
25K → 30K109103+6#3175#3169
30K → 20M6353+10#3169#3159
20M → 21M5452+2#3159#3157
21M → 35K3039-9#3157#3166
35K → 23M10618+88#3166#3078
23M → 24M7421+53#3078#3025
24M → 40K5810+48#3025#2977
40K → 25.2M299+20#2977#2957
25.2M → Finish4227+15#2957#2942
TOTALS1543455+1088
📊

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