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BOSTON MARATHON 2025

Mackenzie Arnold

Bib: 5303•M

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Division (M18-39)
#0 / 5642
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
7:05/mi
22:00
↑ 97↓ 3451.5%
10K· 6.21 mi
7:21/mi
44:51
↑ 79↓ 1380.4%
15K· 9.32 mi
7:26/mi
1:07:57
↑ 67↓ 78
20K· 12.43 mi
7:37/mi
1:31:38
↑ 106↓ 860.1%
Half· 13.11 mi
7:36/mi
1:36:49
↑ 19↓ 370.5%
25K· 15.53 mi
8:01/mi
1:56:16
↑ 66↓ 880.2%
30K· 18.64 mi
8:18/mi
2:22:04
↑ 181↓ 1480.2%
20M
8:06/mi
2:33:05
↑ 64↓ 500.2%
21M
9:54/mi
2:42:59
↑ 106↓ 241.6%
35K· 21.75 mi
9:55/mi
2:50:24
↑ 17↓ 861.7%
23M
11:30/mi
3:04:48
↑ 23↓ 630.6%
24M
10:57/mi
3:15:45
↓ 821.3%
40K· 24.85 mi
13:55/mi
3:27:39
↓ 200.3%
25.2M
14:36/mi
3:32:41
↑ 13↓ 160.2%
Finish· 26.22 mi
14:10/mi
3:47:07
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:49
Pace7:23 /mi
2nd Half
Distance13.11 mi
Time2:10:18
Pace9:56 /mi
📊Positive Split: 34.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:26:1722:007:0522:00
7:05
-
10K
6.21 mi10:49:0844:517:1322:51
7:21
+0:16
15K
9.32 mi11:12:141:07:577:1723:06
7:26
+0:05
20K
12.43 mi11:35:551:31:387:2223:41
7:37
+0:11
Half
13.11 mi11:41:061:36:497:235:11
7:36
-0:01
25K
15.53 mi12:00:331:56:167:2919:27
8:01
+0:25
30K
18.64 mi12:26:212:22:047:3725:48
8:18
+0:17
20M
20.00 mi12:37:222:33:057:3911:01
8:06
-0:12
21M
21.00 mi12:47:162:42:597:469:54
9:54
+1:48
35K
21.75 mi12:54:412:50:247:507:25
9:55
+0:01
23M
23.00 mi13:09:053:04:488:0214:24
11:30
+1:35
24M
24.00 mi13:20:023:15:458:0910:57
10:57
-0:33
40K
24.85 mi13:31:563:27:398:2111:54
13:55
+2:58
25.2M
25.20 mi13:36:583:32:418:265:02
14:36
+0:41
Finish
26.22 mi13:51:243:47:078:4014:26
14:10
-0:26

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

7:05 /mi

Average Pace

8:40 /mi

Slowest Pace

14:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:33:05

67% of race

Time at Slower Pace

1:14:02

33% of race

Average Pace: 8:40 /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 mi10:26:1722:007:0522:00
7:05
#8480
10K
6.21 mi10:49:0844:517:1322:51
7:21
#9608
15K
9.32 mi11:12:141:07:577:1723:06
7:26
#10130
20K
12.43 mi11:35:551:31:387:2223:41
7:37
#10525
Half
13.11 mi11:41:061:36:497:235:11
7:36
#10625
25K
15.53 mi12:00:331:56:167:2919:27
8:01
#11208
30K
18.64 mi12:26:212:22:047:3725:48
8:18
#11603
20M
20.00 mi12:37:222:33:057:3911:01
8:06
#11507
21M
21.00 mi12:47:162:42:597:469:54
9:54
#11974
35K
21.75 mi12:54:412:50:247:507:25
9:55
#12502
23M
23.00 mi13:09:053:04:488:0214:24
11:30
#13800
24M
24.00 mi13:20:023:15:458:0910:57
10:57
#14590
40K
24.85 mi13:31:563:27:398:2111:54
13:55
#15778
25.2M
25.20 mi13:36:583:32:418:265:02
14:36
#16208
Finish
26.22 mi13:51:243:47:078:4014:26
14:10
#17626
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi84807310731011190(Top 39%)8695(Top 54%)8695(Top 154%)
10K6.21 mi3.10 mi9608-11287969-6597969-65910791(Top 38%)8561(Top 53%)8561(Top 152%)
15K9.32 mi3.11 mi10130-5228211-2428211-24211190(Top 39%)8695(Top 54%)8695(Top 154%)
20K12.43 mi3.11 mi10525-3958386-1758386-17511763(Top 41%)8862(Top 55%)8862(Top 157%)
Half13.11 mi0.68 mi10625-1008438-528438-5212546(Top 44%)9276(Top 58%)9276(Top 164%)
25K15.53 mi2.42 mi11208-5838682-2448682-24414065(Top 50%)9794(Top 61%)9794(Top 174%)
30K18.64 mi3.11 mi11603-3958789-1078789-10713541(Top 48%)9390(Top 58%)9390(Top 166%)
20M20.00 mi1.36 mi11507+968702+878702+8711162(Top 39%)8124(Top 50%)8124(Top 144%)
21M21.00 mi1.00 mi11974-4678891-1898891-18917887(Top 63%)11108(Top 69%)11108(Top 197%)
35K21.75 mi0.75 mi12502-5289107-2169107-21621631(Top 76%)12726(Top 79%)12726(Top 226%)
23M23.00 mi1.25 mi13800-12989647-5409647-54024243(Top 85%)13962(Top 87%)13962(Top 247%)
24M24.00 mi1.00 mi14590-7909979-3329979-33223882(Top 84%)13763(Top 85%)13763(Top 244%)
40K24.85 mi0.85 mi15778-118810457-47810457-47827109(Top 95%)15338(Top 95%)15338(Top 272%)
25.2M25.20 mi0.35 mi16208-43010638-18110638-18126817(Top 94%)15168(Top 94%)15168(Top 269%)
Finish26.22 mi1.02 mi17626-141811205-56711205-56728095(Top 99%)15901(Top 99%)15901(Top 282%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 39%
×21story building
+97ft-345ft

Overall

11190

Males

8695

M18-39

8695

5K→10K

3.1 - 6.2 mi

Top 38%
×5story building
+79ft-138ft

Overall

10791

Males

8561

M18-39

8561

10K→15K

6.2 - 9.3 mi

Top 39%
×3story building
+67ft-78ft

Overall

11190

Males

8695

M18-39

8695

15K→20K

9.3 - 12.4 mi

Top 41%
×5story building
+106ft-86ft

Overall

11763

Males

8862

M18-39

8862

20K→Half

12.4 - 13.1 mi

Top 44%
×2story building
+19ft-37ft

Overall

12546

Males

9276

M18-39

9276

Half→25K

13.1 - 15.5 mi

Top 50%
×4story building
+66ft-88ft

Overall

14065

Males

9794

M18-39

9794

25K→30K

15.5 - 18.6 mi

Top 48%
×9story building
+181ft-148ft

Overall

13541

Males

9390

M18-39

9390

30K→20M

18.6 - 20.0 mi

Top 39%
×5story building
+64ft-50ft

Overall

11162

Males

8124

M18-39

8124

20M→21M

20.0 - 21.0 mi

Top 63%
×8story building
+106ft-24ft

Overall

17887

Males

11108

M18-39

11108

21M→35K

21.0 - 21.8 mi

Top 76%
×7story building
+17ft-86ft

Overall

21631

Males

12726

M18-39

12726

35K→23M

21.8 - 23.0 mi

Top 85%
×5story building
+23ft-63ft

Overall

24243

Males

13962

M18-39

13962

23M→24M

23.0 - 24.0 mi

Top 84%
×6story building
+12ft-82ft

Overall

23882

Males

13763

M18-39

13763

24M→40K

24.0 - 24.9 mi

Top 95%
×1story
+6ft-20ft

Overall

27109

Males

15338

M18-39

15338

40K→25.2M

24.9 - 25.2 mi

Top 94%
×1story
+13ft-16ft

Overall

26817

Males

15168

M18-39

15168

25.2M→Finish

25.2 - 26.2 mi

Top 99%
×2story building
+22ft-21ft

Overall

28095

Males

15901

M18-39

15901

Passing Analysis

Category:
Athletes Passed
566
Passed By
9708
Net Change
-9146
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8480
5K → 10K251152-1128#8480#9608
10K → 15K52572-522#9608#10130
15K → 20K82476-395#10130#10525
20K → Half11111-100#10525#10625
Half → 25K65648-583#10625#11208
25K → 30K120515-395#11208#11603
30K → 20M15761+96#11603#11507
20M → 21M24491-467#11507#11974
21M → 35K10538-528#11974#12502
35K → 23M81306-1298#12502#13800
23M → 24M6796-790#13800#14590
24M → 40K41192-1188#14590#15778
40K → 25.2M0430-430#15778#16208
25.2M → Finish21420-1418#16208#17626
TOTALS5669708-9146
📊

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