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BOSTON MARATHON 2025

Justin Darnell

Bib: 10292•M

AL

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 41%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Top 43%
Division (M45-49)
#0 / 2386
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:14/mi
22:27
↑ 97↓ 3451.5%
10K· 6.21 mi
7:10/mi
44:42
↑ 79↓ 1380.4%
15K· 9.32 mi
7:16/mi
1:07:17
↑ 67↓ 78
20K· 12.43 mi
7:34/mi
1:30:49
↑ 106↓ 860.1%
Half· 13.11 mi
7:26/mi
1:35:53
↑ 19↓ 370.5%
25K· 15.53 mi
7:40/mi
1:54:29
↑ 66↓ 880.2%
30K· 18.64 mi
8:05/mi
2:19:36
↑ 181↓ 1480.2%
20M
8:23/mi
2:31:00
↑ 64↓ 500.2%
21M
9:09/mi
2:40:09
↑ 106↓ 241.6%
35K· 21.75 mi
8:04/mi
2:46:11
↑ 17↓ 861.7%
23M
8:35/mi
2:56:56
↑ 23↓ 630.6%
24M
8:42/mi
3:05:38
↓ 821.3%
40K· 24.85 mi
8:47/mi
3:13:09
↓ 200.3%
25.2M
9:34/mi
3:16:27
↑ 13↓ 160.2%
Finish· 26.22 mi
7:59/mi
3:24:35
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:53
Pace7:19 /mi
2nd Half
Distance13.11 mi
Time1:48:42
Pace8:18 /mi
📊Positive Split: 13.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:1022:277:1422:27
7:14
-
10K
6.21 mi11:11:2544:427:1222:15
7:10
-0:04
15K
9.32 mi11:34:001:07:177:1322:35
7:16
+0:06
20K
12.43 mi11:57:321:30:497:1823:32
7:34
+0:18
Half
13.11 mi12:02:361:35:537:195:04
7:26
-0:08
25K
15.53 mi12:21:121:54:297:2218:36
7:40
+0:14
30K
18.64 mi12:46:192:19:367:2925:07
8:05
+0:25
20M
20.00 mi12:57:432:31:007:3311:24
8:23
+0:18
21M
21.00 mi13:06:522:40:097:389:09
9:09
+0:46
35K
21.75 mi13:12:542:46:117:386:02
8:04
-1:05
23M
23.00 mi13:23:392:56:567:4210:45
8:35
+0:31
24M
24.00 mi13:32:213:05:387:448:42
8:42
+0:07
40K
24.85 mi13:39:523:13:097:467:31
8:47
+0:05
25.2M
25.20 mi13:43:103:16:277:483:18
9:34
+0:47
Finish
26.22 mi13:51:183:24:357:498:08
7:59
-1:35

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

7:10 /mi

Average Pace

7:49 /mi

Slowest Pace

9:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:54:29

56% of race

Time at Steady Pace

50:41

25% of race

Time at Slower Pace

39:25

19% of race

Average Pace: 7:48 /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 mi10:49:1022:277:1422:27
7:14
#9680
10K
6.21 mi11:11:2544:427:1222:15
7:10
#9408
15K
9.32 mi11:34:001:07:177:1322:35
7:16
#9487
20K
12.43 mi11:57:321:30:497:1823:32
7:34
#9946
Half
13.11 mi12:02:361:35:537:195:04
7:26
#9995
25K
15.53 mi12:21:121:54:297:2218:36
7:40
#10182
30K
18.64 mi12:46:192:19:367:2925:07
8:05
#10483
20M
20.00 mi12:57:432:31:007:3311:24
8:23
#10690
21M
21.00 mi13:06:522:40:097:389:09
9:09
#10891
35K
21.75 mi13:12:542:46:117:386:02
8:04
#10926
23M
23.00 mi13:23:392:56:567:4210:45
8:35
#11069
24M
24.00 mi13:32:213:05:387:448:42
8:42
#11279
40K
24.85 mi13:39:523:13:097:467:31
8:47
#11449
25.2M
25.20 mi13:43:103:16:277:483:18
9:34
#11498
Finish
26.22 mi13:51:183:24:357:498:08
7:59
#11531
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi9680799779979723(Top 34%)7937(Top 49%)7937(Top 333%)
10K6.21 mi3.10 mi9408+2727849+1487849+1489158(Top 32%)7696(Top 48%)7696(Top 323%)
15K9.32 mi3.11 mi9487-797869-207869-209723(Top 34%)7937(Top 49%)7937(Top 333%)
20K12.43 mi3.11 mi9946-4598083-2148083-21411373(Top 40%)8675(Top 54%)8675(Top 364%)
Half13.11 mi0.68 mi9995-498098-158098-1511072(Top 39%)8588(Top 53%)8588(Top 360%)
25K15.53 mi2.42 mi10182-1878157-598157-5911312(Top 40%)8534(Top 53%)8534(Top 358%)
30K18.64 mi3.11 mi10483-3018257-1008257-10011977(Top 42%)8664(Top 54%)8664(Top 363%)
20M20.00 mi1.36 mi10690-2078311-548311-5413047(Top 46%)9006(Top 56%)9006(Top 377%)
21M21.00 mi1.00 mi10891-2018370-598370-5914322(Top 50%)9477(Top 59%)9477(Top 397%)
35K21.75 mi0.75 mi10926-358361+98361+912651(Top 45%)8637(Top 54%)8637(Top 362%)
23M23.00 mi1.25 mi11069-1438388-278388-2713816(Top 49%)9071(Top 56%)9071(Top 380%)
24M24.00 mi1.00 mi11279-2108441-538441-5315712(Top 55%)9908(Top 62%)9908(Top 415%)
40K24.85 mi0.85 mi11449-1708489-488489-4815107(Top 53%)9483(Top 59%)9483(Top 397%)
25.2M25.20 mi0.35 mi11498-498505-168505-1614868(Top 52%)9326(Top 58%)9326(Top 391%)
Finish26.22 mi1.02 mi11531-338479+268479+2612733(Top 45%)8396(Top 52%)8396(Top 352%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 34%
×21story building
+97ft-345ft

Overall

9723

Males

7937

M45-49

7937

5K→10K

3.1 - 6.2 mi

Top 32%
×5story building
+79ft-138ft

Overall

9158

Males

7696

M45-49

7696

10K→15K

6.2 - 9.3 mi

Top 34%
×3story building
+67ft-78ft

Overall

9723

Males

7937

M45-49

7937

15K→20K

9.3 - 12.4 mi

Top 40%
×5story building
+106ft-86ft

Overall

11373

Males

8675

M45-49

8675

20K→Half

12.4 - 13.1 mi

Top 39%
×2story building
+19ft-37ft

Overall

11072

Males

8588

M45-49

8588

Half→25K

13.1 - 15.5 mi

Top 40%
×4story building
+66ft-88ft

Overall

11312

Males

8534

M45-49

8534

25K→30K

15.5 - 18.6 mi

Top 42%
×9story building
+181ft-148ft

Overall

11977

Males

8664

M45-49

8664

30K→20M

18.6 - 20.0 mi

Top 46%
×5story building
+64ft-50ft

Overall

13047

Males

9006

M45-49

9006

20M→21M

20.0 - 21.0 mi

Top 50%
×8story building
+106ft-24ft

Overall

14322

Males

9477

M45-49

9477

21M→35K

21.0 - 21.8 mi

Top 45%
×7story building
+17ft-86ft

Overall

12651

Males

8637

M45-49

8637

35K→23M

21.8 - 23.0 mi

Top 49%
×5story building
+23ft-63ft

Overall

13816

Males

9071

M45-49

9071

23M→24M

23.0 - 24.0 mi

Top 55%
×6story building
+12ft-82ft

Overall

15712

Males

9908

M45-49

9908

24M→40K

24.0 - 24.9 mi

Top 53%
×1story
+6ft-20ft

Overall

15107

Males

9483

M45-49

9483

40K→25.2M

24.9 - 25.2 mi

Top 52%
×1story
+13ft-16ft

Overall

14868

Males

9326

M45-49

9326

25.2M→Finish

25.2 - 26.2 mi

Top 45%
×2story building
+22ft-21ft

Overall

12733

Males

8396

M45-49

8396

Passing Analysis

Category:
Athletes Passed
1252
Passed By
3098
Net Change
-1851
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9680
5K → 10K389117+272#9680#9408
10K → 15K131210-79#9408#9487
15K → 20K85543-459#9487#9946
20K → Half1361-49#9946#9995
Half → 25K101286-187#9995#10182
25K → 30K151451-301#10182#10483
30K → 20M65272-207#10483#10690
20M → 21M45246-201#10690#10891
21M → 35K5186-35#10891#10926
35K → 23M63206-143#10926#11069
23M → 24M42252-210#11069#11279
24M → 40K28198-170#11279#11449
40K → 25.2M2372-49#11449#11498
25.2M → Finish6598-33#11498#11531
TOTALS12523098-1851
📊

Passing Visuals

Category:
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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