Boston Marathon logo
BOSTON MARATHON 2025

Cal Ballou

Bib: 2236•M

NC

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 20%
Gender (Male)
#0 / 16105
Top 31%
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:26
Rank: #4410
Start → 5K
20:26 | 6:35/mi
10K· 6.21 mi
40:58
Rank: #4450 (-40)
5K → 10K
20:32 | 6:37/mi
15K· 9.32 mi
1:01:31
Rank: #4405 (+45)
10K → 15K
20:33 | 6:37/mi
20K· 12.43 mi
1:22:08
Rank: #4254 (+151)
15K → 20K
20:37 | 6:38/mi
Half· 13.11 mi
1:26:35
Rank: #4212 (+42)
20K → Half
4:27 | 6:31/mi
25K· 15.53 mi
1:42:38
Rank: #4042 (+170)
Half → 25K
16:03 | 6:37/mi
30K· 18.64 mi
2:03:44
Rank: #3878 (+164)
25K → 30K
21:06 | 6:47/mi
20M
2:13:25
Rank: #3916 (-38)
30K → 20M
9:41 | 7:08/mi
21M
2:22:08
Rank: #4345 (-429)
20M → 21M
8:43 | 8:43/mi
35K· 21.75 mi
2:27:55
Rank: #4573 (-228)
21M → 35K
5:47 | 7:44/mi
23M
2:39:19
Rank: #5368 (-795)
35K → 23M
11:24 | 9:06/mi
24M
2:46:57
Rank: #5448 (-80)
23M → 24M
7:38 | 7:38/mi
40K· 24.85 mi
2:53:24
Rank: #5439 (+9)
24M → 40K
6:27 | 7:33/mi
25.2M
2:56:47
Rank: #5549 (-110)
40K → 25.2M
3:23 | 9:49/mi
Finish· 26.22 mi
3:04:18
Rank: #5592 (-43)
25.2M → Finish
7:31 | 7:23/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
Time1:26:35
Pace6:36 /mi
2nd Half
Distance13.11 mi
Time1:37:43
Pace7:27 /mi
📊Positive Split: 12.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:2020:266:3520:26
6:35
-
10K
6.21 mi10:41:5240:586:3620:32
6:37
+0:02
15K
9.32 mi11:02:251:01:316:3620:33
6:37
0:00
20K
12.43 mi11:23:021:22:086:3720:37
6:38
+0:01
Half
13.11 mi11:27:291:26:356:364:27
6:31
-0:07
25K
15.53 mi11:43:321:42:386:3616:03
6:37
+0:06
30K
18.64 mi12:04:382:03:446:3821:06
6:47
+0:10
20M
20.00 mi12:14:192:13:256:409:41
7:08
+0:21
21M
21.00 mi12:23:022:22:086:468:43
8:43
+1:35
35K
21.75 mi12:28:492:27:556:485:47
7:44
-0:59
23M
23.00 mi12:40:132:39:196:5611:24
9:06
+1:22
24M
24.00 mi12:47:512:46:576:577:38
7:38
-1:28
40K
24.85 mi12:54:182:53:246:596:27
7:33
-0:05
25.2M
25.20 mi12:57:412:56:477:013:23
9:49
+2:16
Finish
26.22 mi13:05:123:04:187:027:31
7:23
-2:26

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

6:31 /mi

Average Pace

7:02 /mi

Slowest Pace

9:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:42:38

56% of race

Time at Steady Pace

44:45

24% of race

Time at Slower Pace

36:55

20% of race

Average Pace: 7:02 /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 mi10:21:2020:266:3520:26
6:35
#4410
10K
6.21 mi10:41:5240:586:3620:32
6:37
#4450
15K
9.32 mi11:02:251:01:316:3620:33
6:37
#4405
20K
12.43 mi11:23:021:22:086:3720:37
6:38
#4254
Half
13.11 mi11:27:291:26:356:364:27
6:31
#4212
25K
15.53 mi11:43:321:42:386:3616:03
6:37
#4042
30K
18.64 mi12:04:382:03:446:3821:06
6:47
#3878
20M
20.00 mi12:14:192:13:256:409:41
7:08
#3916
21M
21.00 mi12:23:022:22:086:468:43
8:43
#4345
35K
21.75 mi12:28:492:27:556:485:47
7:44
#4573
23M
23.00 mi12:40:132:39:196:5611:24
9:06
#5368
24M
24.00 mi12:47:512:46:576:577:38
7:38
#5448
40K
24.85 mi12:54:182:53:246:596:27
7:33
#5439
25.2M
25.20 mi12:57:412:56:477:013:23
9:49
#5549
Finish
26.22 mi13:05:123:04:187:027:31
7:23
#5592
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4410414741474356(Top 15%)4090(Top 25%)4090(Top 72%)
10K6.21 mi3.10 mi4450-404185-384185-384552(Top 16%)4266(Top 26%)4266(Top 76%)
15K9.32 mi3.11 mi4405+454142+434142+434356(Top 15%)4090(Top 25%)4090(Top 72%)
20K12.43 mi3.11 mi4254+1513999+1433999+1433938(Top 14%)3709(Top 23%)3709(Top 66%)
Half13.11 mi0.68 mi4212+423961+383961+383888(Top 14%)3668(Top 23%)3668(Top 65%)
25K15.53 mi2.42 mi4042+1703801+1603801+1603605(Top 13%)3397(Top 21%)3397(Top 60%)
30K18.64 mi3.11 mi3878+1643651+1503651+1503400(Top 12%)3172(Top 20%)3172(Top 56%)
20M20.00 mi1.36 mi3916-383678-273678-274823(Top 17%)4349(Top 27%)4349(Top 77%)
21M21.00 mi1.00 mi4345-4294040-3624040-36211734(Top 41%)8226(Top 51%)8226(Top 146%)
35K21.75 mi0.75 mi4573-2284236-1964236-19610230(Top 36%)7464(Top 46%)7464(Top 132%)
23M23.00 mi1.25 mi5368-7954891-6554891-65516809(Top 59%)10421(Top 65%)10421(Top 185%)
24M24.00 mi1.00 mi5448-804944-534944-538608(Top 30%)6428(Top 40%)6428(Top 114%)
40K24.85 mi0.85 mi5439+94918+264918+267025(Top 25%)5443(Top 34%)5443(Top 96%)
25.2M25.20 mi0.35 mi5549-1105000-825000-8216040(Top 56%)9865(Top 61%)9865(Top 175%)
Finish26.22 mi1.02 mi5592-435013-135013-138295(Top 29%)6071(Top 38%)6071(Top 108%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 15%
×21stories
+97ft-345ft

Overall

4356

Males

4090

M18-39

4090

5K→10K

3.1 - 6.2 mi

Top 16%
×5stories
+79ft-138ft

Overall

4552

Males

4266

M18-39

4266

10K→15K

6.2 - 9.3 mi

Top 15%
×3stories
+67ft-78ft

Overall

4356

Males

4090

M18-39

4090

15K→20K

9.3 - 12.4 mi

Top 14%
×5stories
+106ft-86ft

Overall

3938

Males

3709

M18-39

3709

20K→Half

12.4 - 13.1 mi

Top 14%
×2stories
+19ft-37ft

Overall

3888

Males

3668

M18-39

3668

Half→25K

13.1 - 15.5 mi

Top 13%
×4stories
+66ft-88ft

Overall

3605

Males

3397

M18-39

3397

25K→30K

15.5 - 18.6 mi

Top 12%
×9stories
+181ft-148ft

Overall

3400

Males

3172

M18-39

3172

30K→20M

18.6 - 20.0 mi

Top 17%
×5stories
+64ft-50ft

Overall

4823

Males

4349

M18-39

4349

20M→21M

20.0 - 21.0 mi

Top 41%
×8stories
+106ft-24ft

Overall

11734

Males

8226

M18-39

8226

21M→35K

21.0 - 21.8 mi

Top 36%
×7stories
+17ft-86ft

Overall

10230

Males

7464

M18-39

7464

35K→23M

21.8 - 23.0 mi

Top 59%
×5stories
+23ft-63ft

Overall

16809

Males

10421

M18-39

10421

23M→24M

23.0 - 24.0 mi

Top 30%
×6stories
+12ft-82ft

Overall

8608

Males

6428

M18-39

6428

24M→40K

24.0 - 24.9 mi

Top 25%
×1story
+6ft-20ft

Overall

7025

Males

5443

M18-39

5443

40K→25.2M

24.9 - 25.2 mi

Top 56%
×1story
+13ft-16ft

Overall

16040

Males

9865

M18-39

9865

25.2M→Finish

25.2 - 26.2 mi

Top 29%
×2stories
+22ft-21ft

Overall

8295

Males

6071

M18-39

6071

Passing Analysis

Category:
Athletes Passed
1069
Passed By
2251
Net Change
-1182
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4410
5K → 10K128168-40#4410#4450
10K → 15K11570+45#4450#4405
15K → 20K18635+151#4405#4254
20K → Half475+42#4254#4212
Half → 25K18414+170#4212#4042
25K → 30K20541+164#4042#3878
30K → 20M4280-38#3878#3916
20M → 21M13442-429#3916#4345
21M → 35K15243-228#4345#4573
35K → 23M12807-795#4573#5368
23M → 24M26106-80#5368#5448
24M → 40K5243+9#5448#5439
40K → 25.2M8118-110#5439#5549
25.2M → Finish3679-43#5549#5592
TOTALS10692251-1182
📊

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