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BOSTON MARATHON 2025

Mary Devellis

Bib: 27377•F

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 49%
Division (F18-39)
#0 / 5469
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
7:46/mi
24:08
↑ 97↓ 3451.5%
10K· 6.21 mi
7:47/mi
48:20
↑ 79↓ 1380.4%
15K· 9.32 mi
7:47/mi
1:12:32
↑ 67↓ 78
20K· 12.43 mi
8:00/mi
1:37:22
↑ 106↓ 860.1%
Half· 13.11 mi
7:55/mi
1:42:46
↑ 19↓ 370.5%
25K· 15.53 mi
8:42/mi
2:03:52
↑ 66↓ 880.2%
30K· 18.64 mi
9:09/mi
2:32:17
↑ 181↓ 1480.2%
20M
9:36/mi
2:45:20
↑ 64↓ 500.2%
21M
9:41/mi
2:55:01
↑ 106↓ 241.6%
35K· 21.75 mi
9:39/mi
3:02:14
↑ 17↓ 861.7%
23M
10:15/mi
3:15:04
↑ 23↓ 630.6%
24M
9:23/mi
3:24:27
↓ 821.3%
40K· 24.85 mi
9:25/mi
3:32:30
↓ 200.3%
25.2M
9:37/mi
3:35:49
↑ 13↓ 160.2%
Finish· 26.22 mi
8:02/mi
3:44:00
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:46
Pace7:50 /mi
2nd Half
Distance13.11 mi
Time2:01:14
Pace9:15 /mi
📊Positive Split: 18.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:39:3724:087:4624:08
7:46
-
10K
6.21 mi12:03:4948:207:4724:12
7:47
+0:01
15K
9.32 mi12:28:011:12:327:4724:12
7:47
0:00
20K
12.43 mi12:52:511:37:227:5024:50
8:00
+0:13
Half
13.11 mi12:58:151:42:467:505:24
7:55
-0:05
25K
15.53 mi13:19:212:03:527:5821:06
8:42
+0:47
30K
18.64 mi13:47:462:32:178:1028:25
9:09
+0:27
20M
20.00 mi14:00:492:45:208:1613:03
9:36
+0:27
21M
21.00 mi14:10:302:55:018:209:41
9:41
+0:05
35K
21.75 mi14:17:433:02:148:237:13
9:39
-0:02
23M
23.00 mi14:30:333:15:048:2912:50
10:15
+0:36
24M
24.00 mi14:39:563:24:278:319:23
9:23
-0:52
40K
24.85 mi14:47:593:32:308:338:03
9:25
+0:02
25.2M
25.20 mi14:51:183:35:498:343:19
9:37
+0:12
Finish
26.22 mi14:59:293:44:008:338:11
8:02
-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

7:46 /mi

Average Pace

8:33 /mi

Slowest Pace

10:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:12:03

59% of race

Time at Steady Pace

45:51

20% of race

Time at Slower Pace

46:06

21% of race

Average Pace: 8:33 /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 mi11:39:3724:087:4624:08
7:46
#14538
10K
6.21 mi12:03:4948:207:4724:12
7:47
#14583
15K
9.32 mi12:28:011:12:327:4724:12
7:47
#14481
20K
12.43 mi12:52:511:37:227:5024:50
8:00
#14538
Half
13.11 mi12:58:151:42:467:505:24
7:55
#14571
25K
15.53 mi13:19:212:03:527:5821:06
8:42
#15361
30K
18.64 mi13:47:462:32:178:1028:25
9:09
#16007
20M
20.00 mi14:00:492:45:208:1613:03
9:36
#16296
21M
21.00 mi14:10:302:55:018:209:41
9:41
#16292
35K
21.75 mi14:17:433:02:148:237:13
9:39
#16490
23M
23.00 mi14:30:333:15:048:2912:50
10:15
#16890
24M
24.00 mi14:39:563:24:278:319:23
9:23
#17023
40K
24.85 mi14:47:593:32:308:338:03
9:25
#17080
25.2M
25.20 mi14:51:183:35:498:343:19
9:37
#17051
Finish
26.22 mi14:59:293:44:008:338:11
8:02
#16900
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi145384244424414305(Top 50%)4208(Top 34%)4208(Top 77%)
10K6.21 mi3.10 mi14583-454288-444288-4414725(Top 52%)4382(Top 36%)4382(Top 80%)
15K9.32 mi3.11 mi14481+1024245+434245+4314305(Top 50%)4208(Top 34%)4208(Top 77%)
20K12.43 mi3.11 mi14538-574312-674312-6714896(Top 52%)4589(Top 38%)4589(Top 84%)
Half13.11 mi0.68 mi14571-334330-184330-1815306(Top 54%)4803(Top 39%)4803(Top 88%)
25K15.53 mi2.42 mi15361-7904810-4804810-48018403(Top 65%)6651(Top 54%)6651(Top 122%)
30K18.64 mi3.11 mi16007-6465224-4145224-41418388(Top 65%)6774(Top 55%)6774(Top 124%)
20M20.00 mi1.36 mi16296-2895432-2085432-20819629(Top 69%)7589(Top 62%)7589(Top 139%)
21M21.00 mi1.00 mi16292+45466-345466-3416966(Top 60%)6237(Top 51%)6237(Top 114%)
35K21.75 mi0.75 mi16490-1985598-1325598-13220843(Top 73%)8413(Top 69%)8413(Top 154%)
23M23.00 mi1.25 mi16890-4005872-2745872-27421275(Top 75%)8688(Top 71%)8688(Top 159%)
24M24.00 mi1.00 mi17023-1335972-1005972-10019168(Top 67%)7629(Top 62%)7629(Top 139%)
40K24.85 mi0.85 mi17080-576035-636035-6318354(Top 65%)7303(Top 60%)7303(Top 134%)
25.2M25.20 mi0.35 mi17051+296033+26033+215252(Top 54%)5693(Top 47%)5693(Top 104%)
Finish26.22 mi1.02 mi16900+1515963+705963+7013137(Top 46%)4525(Top 37%)4525(Top 83%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 50%
×21story building
+97ft-345ft

Overall

14305

Females

4208

F18-39

4208

5K→10K

3.1 - 6.2 mi

Top 52%
×5story building
+79ft-138ft

Overall

14725

Females

4382

F18-39

4382

10K→15K

6.2 - 9.3 mi

Top 50%
×3story building
+67ft-78ft

Overall

14305

Females

4208

F18-39

4208

15K→20K

9.3 - 12.4 mi

Top 52%
×5story building
+106ft-86ft

Overall

14896

Females

4589

F18-39

4589

20K→Half

12.4 - 13.1 mi

Top 54%
×2story building
+19ft-37ft

Overall

15306

Females

4803

F18-39

4803

Half→25K

13.1 - 15.5 mi

Top 65%
×4story building
+66ft-88ft

Overall

18403

Females

6651

F18-39

6651

25K→30K

15.5 - 18.6 mi

Top 65%
×9story building
+181ft-148ft

Overall

18388

Females

6774

F18-39

6774

30K→20M

18.6 - 20.0 mi

Top 69%
×5story building
+64ft-50ft

Overall

19629

Females

7589

F18-39

7589

20M→21M

20.0 - 21.0 mi

Top 60%
×8story building
+106ft-24ft

Overall

16966

Females

6237

F18-39

6237

21M→35K

21.0 - 21.8 mi

Top 73%
×7story building
+17ft-86ft

Overall

20843

Females

8413

F18-39

8413

35K→23M

21.8 - 23.0 mi

Top 75%
×5story building
+23ft-63ft

Overall

21275

Females

8688

F18-39

8688

23M→24M

23.0 - 24.0 mi

Top 67%
×6story building
+12ft-82ft

Overall

19168

Females

7629

F18-39

7629

24M→40K

24.0 - 24.9 mi

Top 65%
×1story
+6ft-20ft

Overall

18354

Females

7303

F18-39

7303

40K→25.2M

24.9 - 25.2 mi

Top 54%
×1story
+13ft-16ft

Overall

15252

Females

5693

F18-39

5693

25.2M→Finish

25.2 - 26.2 mi

Top 46%
×2story building
+22ft-21ft

Overall

13137

Females

4525

F18-39

4525

Passing Analysis

Category:
Athletes Passed
1392
Passed By
3754
Net Change
-2362
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14538
5K → 10K274319-45#14538#14583
10K → 15K242140+102#14583#14481
15K → 20K181238-57#14481#14538
20K → Half2962-33#14538#14571
Half → 25K47837-790#14571#15361
25K → 30K96742-646#15361#16007
30K → 20M47336-289#16007#16296
20M → 21M10298+4#16296#16292
21M → 35K29227-198#16292#16490
35K → 23M35435-400#16490#16890
23M → 24M46179-133#16890#17023
24M → 40K50107-57#17023#17080
40K → 25.2M5021+29#17080#17051
25.2M → Finish16413+151#17051#16900
TOTALS13923754-2362
📊

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