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BOSTON MARATHON 2025

Derek Callan

Bib: 9606•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 19%
Gender (Male)
#0 / 16105
Top 30%
Masters (Masters Men)
#0 / 10463
Top 16%
Division (M45-49)
#0 / 2386
Top 22%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:16
Rank: #9179
Start → 5K
22:16 | 7:10/mi
10K· 6.21 mi
44:26
Rank: #9024 (+155)
5K → 10K
22:10 | 7:08/mi
15K· 9.32 mi
1:06:41
Rank: #8938 (+86)
10K → 15K
22:15 | 7:10/mi
20K· 12.43 mi
1:28:52
Rank: #8547 (+391)
15K → 20K
22:11 | 7:08/mi
Half· 13.11 mi
1:33:38
Rank: #8475 (+72)
20K → Half
4:46 | 6:59/mi
25K· 15.53 mi
1:50:19
Rank: #7927 (+548)
Half → 25K
16:41 | 6:53/mi
30K· 18.64 mi
2:12:01
Rank: #7221 (+706)
25K → 30K
21:42 | 6:59/mi
20M
2:21:19
Rank: #6803 (+418)
30K → 20M
9:18 | 6:51/mi
21M
2:28:36
Rank: #6543 (+260)
20M → 21M
7:17 | 7:17/mi
35K· 21.75 mi
2:33:31
Rank: #6373 (+170)
21M → 35K
4:55 | 6:34/mi
23M
2:42:00
Rank: #6071 (+302)
35K → 23M
8:29 | 6:47/mi
24M
2:48:31
Rank: #5831 (+240)
23M → 24M
6:31 | 6:31/mi
40K· 24.85 mi
2:54:15
Rank: #5624 (+207)
24M → 40K
5:44 | 6:42/mi
25.2M
2:56:47
Rank: #5545 (+79)
40K → 25.2M
2:32 | 7:21/mi
Finish· 26.22 mi
3:03:29
Rank: #5412 (+133)
25.2M → Finish
6:42 | 6:34/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:33:38
Pace7:09 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:29:51
Pace6:51 /mi
📊Negative Split: 4.0% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:0422:167:1022:16
7:10
-
10K
6.21 mi11:10:1444:267:0922:10
7:08
-0:02
15K
9.32 mi11:32:291:06:417:0922:15
7:10
+0:02
20K
12.43 mi11:54:401:28:527:0922:11
7:08
-0:02
Half
13.11 mi11:59:261:33:387:094:46
6:59
-0:09
25K
15.53 mi12:16:071:50:197:0616:41
6:53
-0:06
30K
18.64 mi12:37:492:12:017:0521:42
6:59
+0:06
20M
20.00 mi12:47:072:21:197:049:18
6:51
-0:08
21M
21.00 mi12:54:242:28:367:057:17
7:17
+0:26
35K
21.75 mi12:59:192:33:317:044:55
6:34
-0:43
23M
23.00 mi13:07:482:42:007:038:29
6:47
+0:13
24M
24.00 mi13:14:192:48:317:016:31
6:31
-0:16
40K
24.85 mi13:20:032:54:157:015:44
6:42
+0:11
25.2M
25.20 mi13:22:352:56:477:012:32
7:21
+0:39
Finish
26.22 mi13:29:173:03:297:006:42
6:34
-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

6:31 /mi

Average Pace

7:00 /mi

Slowest Pace

7:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:53:40

95% of race

Time at Steady Pace

9:49

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:00 /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 mi10:48:0422:167:1022:16
7:10
#9179
10K
6.21 mi11:10:1444:267:0922:10
7:08
#9024
15K
9.32 mi11:32:291:06:417:0922:15
7:10
#8938
20K
12.43 mi11:54:401:28:527:0922:11
7:08
#8547
Half
13.11 mi11:59:261:33:387:094:46
6:59
#8475
25K
15.53 mi12:16:071:50:197:0616:41
6:53
#7927
30K
18.64 mi12:37:492:12:017:0521:42
6:59
#7221
20M
20.00 mi12:47:072:21:197:049:18
6:51
#6803
21M
21.00 mi12:54:242:28:367:057:17
7:17
#6543
35K
21.75 mi12:59:192:33:317:044:55
6:34
#6373
23M
23.00 mi13:07:482:42:007:038:29
6:47
#6071
24M
24.00 mi13:14:192:48:317:016:31
6:31
#5831
40K
24.85 mi13:20:032:54:157:015:44
6:42
#5624
25.2M
25.20 mi13:22:352:56:477:012:32
7:21
#5545
Finish
26.22 mi13:29:173:03:297:006:42
6:34
#5412
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi9179771077108777(Top 31%)7417(Top 46%)7417(Top 311%)
10K6.21 mi3.10 mi9024+1557613+977613+978943(Top 31%)7569(Top 47%)7569(Top 317%)
15K9.32 mi3.11 mi8938+867549+647549+648777(Top 31%)7417(Top 46%)7417(Top 311%)
20K12.43 mi3.11 mi8547+3917290+2597290+2597738(Top 27%)6703(Top 42%)6703(Top 281%)
Half13.11 mi0.68 mi8475+727242+487242+487442(Top 26%)6532(Top 41%)6532(Top 274%)
25K15.53 mi2.42 mi7927+5486887+3556887+3555518(Top 19%)5008(Top 31%)5008(Top 210%)
30K18.64 mi3.11 mi7221+7066365+5226365+5224614(Top 16%)4211(Top 26%)4211(Top 176%)
20M20.00 mi1.36 mi6803+4186035+3306035+3303192(Top 11%)2957(Top 18%)2957(Top 124%)
21M21.00 mi1.00 mi6543+2605818+2175818+2173574(Top 13%)3273(Top 20%)3273(Top 137%)
35K21.75 mi0.75 mi6373+1705680+1385680+1382863(Top 10%)2645(Top 16%)2645(Top 111%)
23M23.00 mi1.25 mi6071+3025437+2435437+2432606(Top 9%)2409(Top 15%)2409(Top 101%)
24M24.00 mi1.00 mi5831+2405231+2065231+2062141(Top 8%)1988(Top 12%)1988(Top 83%)
40K24.85 mi0.85 mi5624+2075063+1685063+1682424(Top 9%)2221(Top 14%)2221(Top 93%)
25.2M25.20 mi0.35 mi5545+794996+674996+672806(Top 10%)2508(Top 16%)2508(Top 105%)
Finish26.22 mi1.02 mi5412+1334878+1184878+1183222(Top 11%)2854(Top 18%)2854(Top 120%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 31%
×21stories
+97ft-345ft

Overall

8777

Males

7417

M45-49

7417

5K→10K

3.1 - 6.2 mi

Top 31%
×5stories
+79ft-138ft

Overall

8943

Males

7569

M45-49

7569

10K→15K

6.2 - 9.3 mi

Top 31%
×3stories
+67ft-78ft

Overall

8777

Males

7417

M45-49

7417

15K→20K

9.3 - 12.4 mi

Top 27%
×5stories
+106ft-86ft

Overall

7738

Males

6703

M45-49

6703

20K→Half

12.4 - 13.1 mi

Top 26%
×2stories
+19ft-37ft

Overall

7442

Males

6532

M45-49

6532

Half→25K

13.1 - 15.5 mi

Top 19%
×4stories
+66ft-88ft

Overall

5518

Males

5008

M45-49

5008

25K→30K

15.5 - 18.6 mi

Top 16%
×9stories
+181ft-148ft

Overall

4614

Males

4211

M45-49

4211

30K→20M

18.6 - 20.0 mi

Top 11%
×5stories
+64ft-50ft

Overall

3192

Males

2957

M45-49

2957

20M→21M

20.0 - 21.0 mi

Top 13%
×8stories
+106ft-24ft

Overall

3574

Males

3273

M45-49

3273

21M→35K

21.0 - 21.8 mi

Top 10%
×7stories
+17ft-86ft

Overall

2863

Males

2645

M45-49

2645

35K→23M

21.8 - 23.0 mi

Top 9%
×5stories
+23ft-63ft

Overall

2606

Males

2409

M45-49

2409

23M→24M

23.0 - 24.0 mi

Top 8%
×6stories
+12ft-82ft

Overall

2141

Males

1988

M45-49

1988

24M→40K

24.0 - 24.9 mi

Top 9%
×1story
+6ft-20ft

Overall

2424

Males

2221

M45-49

2221

40K→25.2M

24.9 - 25.2 mi

Top 10%
×1story
+13ft-16ft

Overall

2806

Males

2508

M45-49

2508

25.2M→Finish

25.2 - 26.2 mi

Top 11%
×2stories
+22ft-21ft

Overall

3222

Males

2854

M45-49

2854

Passing Analysis

Category:
Athletes Passed
4077
Passed By
310
Net Change
+3767
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9179
5K → 10K302147+155#9179#9024
10K → 15K212126+86#9024#8938
15K → 20K40817+391#8938#8547
20K → Half808+72#8547#8475
Half → 25K5491+548#8475#7927
25K → 30K7071+706#7927#7221
30K → 20M4180+418#7221#6803
20M → 21M2611+260#6803#6543
21M → 35K1700+170#6543#6373
35K → 23M3020+302#6373#6071
23M → 24M2444+240#6071#5831
24M → 40K2070+207#5831#5624
40K → 25.2M801+79#5624#5545
25.2M → Finish1374+133#5545#5412
TOTALS4077310+3767
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing