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BOSTON MARATHON 2025

Byron Mills

Bib: 11974•X

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 22%
Gender (Other)
#0 / 71
Top 21%
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
7:11/mi
22:20
↑ 97↓ 3451.5%
10K· 6.21 mi
6:47/mi
43:25
↑ 79↓ 1380.4%
15K· 9.32 mi
6:49/mi
1:04:35
↑ 67↓ 78
20K· 12.43 mi
7:09/mi
1:26:48
↑ 106↓ 860.1%
Half· 13.11 mi
6:36/mi
1:31:18
↑ 19↓ 370.5%
25K· 15.53 mi
7:00/mi
1:48:16
↑ 66↓ 880.2%
30K· 18.64 mi
7:17/mi
2:10:54
↑ 181↓ 1480.2%
20M
8:01/mi
2:21:48
↑ 64↓ 500.2%
21M
7:44/mi
2:29:32
↑ 106↓ 241.6%
35K· 21.75 mi
7:22/mi
2:35:03
↑ 17↓ 861.7%
23M
7:26/mi
2:44:21
↑ 23↓ 630.6%
24M
7:11/mi
2:51:32
↓ 821.3%
40K· 24.85 mi
7:16/mi
2:57:45
↓ 200.3%
25.2M
7:38/mi
3:00:23
↑ 13↓ 160.2%
Finish· 26.22 mi
6:46/mi
3:07:17
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:31:18
Pace6:58 /mi
2nd Half
Distance13.11 mi
Time1:35:59
Pace7:19 /mi
📊Positive Split: 5.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:1122:207:1122:20
7:11
-
10K
6.21 mi11:34:1643:256:5921:05
6:47
-0:24
15K
9.32 mi11:55:261:04:356:5621:10
6:49
+0:02
20K
12.43 mi12:17:391:26:486:5922:13
7:09
+0:20
Half
13.11 mi12:22:091:31:186:584:30
6:36
-0:33
25K
15.53 mi12:39:071:48:166:5816:58
7:00
+0:24
30K
18.64 mi13:01:452:10:547:0122:38
7:17
+0:17
20M
20.00 mi13:12:392:21:487:0510:54
8:01
+0:44
21M
21.00 mi13:20:232:29:327:077:44
7:44
-0:17
35K
21.75 mi13:25:542:35:037:085:31
7:22
-0:22
23M
23.00 mi13:35:122:44:217:099:18
7:26
+0:04
24M
24.00 mi13:42:232:51:327:097:11
7:11
-0:15
40K
24.85 mi13:48:362:57:457:096:13
7:16
+0:05
25.2M
25.20 mi13:51:143:00:237:092:38
7:38
+0:22
Finish
26.22 mi13:58:083:07:177:096:54
6:46
-0:52

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

6:36 /mi

Average Pace

7:09 /mi

Slowest Pace

8:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

53:39

29% of race

Time at Steady Pace

1:43:04

55% of race

Time at Slower Pace

30:34

16% of race

Average Pace: 7:09 /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 mi11:13:1122:207:1122:20
7:11
#9346
10K
6.21 mi11:34:1643:256:5921:05
6:47
#7758
15K
9.32 mi11:55:261:04:356:5621:10
6:49
#7292
20K
12.43 mi12:17:391:26:486:5922:13
7:09
#7386
Half
13.11 mi12:22:091:31:186:584:30
6:36
#7253
25K
15.53 mi12:39:071:48:166:5816:58
7:00
#7058
30K
18.64 mi13:01:452:10:547:0122:38
7:17
#6811
20M
20.00 mi13:12:392:21:487:0510:54
8:01
#7000
21M
21.00 mi13:20:232:29:327:077:44
7:44
#6832
35K
21.75 mi13:25:542:35:037:085:31
7:22
#6825
23M
23.00 mi13:35:122:44:217:099:18
7:26
#6711
24M
24.00 mi13:42:232:51:327:097:11
7:11
#6598
40K
24.85 mi13:48:362:57:457:096:13
7:16
#6507
25.2M
25.20 mi13:51:143:00:237:092:38
7:38
#6434
Finish
26.22 mi13:58:083:07:177:096:54
6:46
#6293
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallXAge DivSeg. OverallSeg. XSeg. Age Div
5K3.11 mi3.11 mi934624246182(Top 22%)15(Top 21%)15
10K6.21 mi3.10 mi7758+158821+321+36214(Top 22%)15(Top 21%)15
15K9.32 mi3.11 mi7292+46616+516+56182(Top 22%)15(Top 21%)15
20K12.43 mi3.11 mi7386-9419-319-37808(Top 27%)21(Top 30%)21
Half13.11 mi0.68 mi7253+13318+118+14265(Top 15%)12(Top 17%)12
25K15.53 mi2.42 mi7058+19517+117+16294(Top 22%)17(Top 24%)17
30K18.64 mi3.11 mi6811+24717176353(Top 22%)18(Top 25%)18
20M20.00 mi1.36 mi7000-18918-118-110546(Top 37%)27(Top 38%)27
21M21.00 mi1.00 mi6832+16816+216+25791(Top 20%)16(Top 23%)16
35K21.75 mi0.75 mi6825+716167634(Top 27%)19(Top 27%)19
23M23.00 mi1.25 mi6711+11415+115+16166(Top 22%)16(Top 23%)16
24M24.00 mi1.00 mi6598+11315155661(Top 20%)15(Top 21%)15
40K24.85 mi0.85 mi6507+9115155433(Top 19%)14(Top 20%)14
25.2M25.20 mi0.35 mi6434+7315153941(Top 14%)13(Top 18%)13
Finish26.22 mi1.02 mi6293+14115154288(Top 15%)16(Top 23%)16

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 22%
×21story building
+97ft-345ft

Overall

6182

X

15

Age Div

15

5K→10K

3.1 - 6.2 mi

Top 22%
×5story building
+79ft-138ft

Overall

6214

X

15

Age Div

15

10K→15K

6.2 - 9.3 mi

Top 22%
×3story building
+67ft-78ft

Overall

6182

X

15

Age Div

15

15K→20K

9.3 - 12.4 mi

Top 27%
×5story building
+106ft-86ft

Overall

7808

X

21

Age Div

21

20K→Half

12.4 - 13.1 mi

Top 15%
×2story building
+19ft-37ft

Overall

4265

X

12

Age Div

12

Half→25K

13.1 - 15.5 mi

Top 22%
×4story building
+66ft-88ft

Overall

6294

X

17

Age Div

17

25K→30K

15.5 - 18.6 mi

Top 22%
×9story building
+181ft-148ft

Overall

6353

X

18

Age Div

18

30K→20M

18.6 - 20.0 mi

Top 37%
×5story building
+64ft-50ft

Overall

10546

X

27

Age Div

27

20M→21M

20.0 - 21.0 mi

Top 20%
×8story building
+106ft-24ft

Overall

5791

X

16

Age Div

16

21M→35K

21.0 - 21.8 mi

Top 27%
×7story building
+17ft-86ft

Overall

7634

X

19

Age Div

19

35K→23M

21.8 - 23.0 mi

Top 22%
×5story building
+23ft-63ft

Overall

6166

X

16

Age Div

16

23M→24M

23.0 - 24.0 mi

Top 20%
×6story building
+12ft-82ft

Overall

5661

X

15

Age Div

15

24M→40K

24.0 - 24.9 mi

Top 19%
×1story
+6ft-20ft

Overall

5433

X

14

Age Div

14

40K→25.2M

24.9 - 25.2 mi

Top 14%
×1story
+13ft-16ft

Overall

3941

X

13

Age Div

13

25.2M→Finish

25.2 - 26.2 mi

Top 15%
×2story building
+22ft-21ft

Overall

4288

X

16

Age Div

16

Passing Analysis

Category:
Athletes Passed
3728
Passed By
675
Net Change
+3053
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9346
5K → 10K15913+1588#9346#7758
10K → 15K47913+466#7758#7292
15K → 20K102196-94#7292#7386
20K → Half1330+133#7386#7253
Half → 25K21419+195#7253#7058
25K → 30K30861+247#7058#6811
30K → 20M52241-189#6811#7000
20M → 21M18517+168#7000#6832
21M → 35K5245+7#6832#6825
35K → 23M15440+114#6825#6711
23M → 24M13017+113#6711#6598
24M → 40K10514+91#6598#6507
40K → 25.2M752+73#6507#6434
25.2M → Finish1487+141#6434#6293
TOTALS3728675+3053
📊

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