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BOSTON MARATHON 2025

Mary Sullivan

Bib: 18640•F

NY

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 30%
Gender (Female)
#0 / 12228
Top 13%
Division (F18-39)
#0 / 5469
Top 24%
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
6:28/mi
20:06
↑ 97↓ 3451.5%
10K· 6.21 mi
6:47/mi
41:10
↑ 79↓ 1380.4%
15K· 9.32 mi
7:02/mi
1:03:02
↑ 67↓ 78
20K· 12.43 mi
7:17/mi
1:25:39
↑ 106↓ 860.1%
Half· 13.11 mi
7:12/mi
1:30:34
↑ 19↓ 370.5%
25K· 15.53 mi
7:27/mi
1:48:39
↑ 66↓ 880.2%
30K· 18.64 mi
8:00/mi
2:13:29
↑ 181↓ 1480.2%
20M
8:07/mi
2:24:31
↑ 64↓ 500.2%
21M
8:52/mi
2:33:23
↑ 106↓ 241.6%
35K· 21.75 mi
7:48/mi
2:39:13
↑ 17↓ 861.7%
23M
8:04/mi
2:49:19
↑ 23↓ 630.6%
24M
7:51/mi
2:57:10
↓ 821.3%
40K· 24.85 mi
7:57/mi
3:03:58
↓ 200.3%
25.2M
9:08/mi
3:07:07
↑ 13↓ 160.2%
Finish· 26.22 mi
7:54/mi
3:15:10
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:30:34
Pace6:55 /mi
2nd Half
Distance13.11 mi
Time1:44:36
Pace7:59 /mi
📊Positive Split: 15.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:10:1520:066:2820:06
6:28
-
10K
6.21 mi11:31:1941:106:3821:04
6:47
+0:19
15K
9.32 mi11:53:111:03:026:4621:52
7:02
+0:15
20K
12.43 mi12:15:481:25:396:5422:37
7:17
+0:15
Half
13.11 mi12:20:431:30:346:554:55
7:12
-0:05
25K
15.53 mi12:38:481:48:397:0018:05
7:27
+0:15
30K
18.64 mi13:03:382:13:297:1024:50
8:00
+0:33
20M
20.00 mi13:14:402:24:317:1411:02
8:07
+0:07
21M
21.00 mi13:23:322:33:237:188:52
8:52
+0:45
35K
21.75 mi13:29:222:39:137:195:50
7:48
-1:04
23M
23.00 mi13:39:282:49:197:2210:06
8:04
+0:16
24M
24.00 mi13:47:192:57:107:237:51
7:51
-0:13
40K
24.85 mi13:54:073:03:587:246:48
7:57
+0:06
25.2M
25.20 mi13:57:163:07:077:263:09
9:08
+1:11
Finish
26.22 mi14:05:193:15:107:278:03
7:54
-1:14

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

6:28 /mi

Average Pace

7:27 /mi

Slowest Pace

9:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:48:39

56% of race

Time at Steady Pace

1:14:30

38% of race

Time at Slower Pace

12:01

6% of race

Average Pace: 7:27 /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 mi11:10:1520:066:2820:06
6:28
#3630
10K
6.21 mi11:31:1941:106:3821:04
6:47
#4706
15K
9.32 mi11:53:111:03:026:4621:52
7:02
#5855
20K
12.43 mi12:15:481:25:396:5422:37
7:17
#6772
Half
13.11 mi12:20:431:30:346:554:55
7:12
#6902
25K
15.53 mi12:38:481:48:397:0018:05
7:27
#7235
30K
18.64 mi13:03:382:13:297:1024:50
8:00
#7754
20M
20.00 mi13:14:402:24:317:1411:02
8:07
#7947
21M
21.00 mi13:23:322:33:237:188:52
8:52
#8172
35K
21.75 mi13:29:222:39:137:195:50
7:48
#8242
23M
23.00 mi13:39:282:49:197:2210:06
8:04
#8320
24M
24.00 mi13:47:192:57:107:237:51
7:51
#8345
40K
24.85 mi13:54:073:03:587:246:48
7:57
#8378
25.2M
25.20 mi13:57:163:07:077:263:09
9:08
#8447
Finish
26.22 mi14:05:193:15:107:278:03
7:54
#8610
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi36301811817895(Top 28%)997(Top 8%)997(Top 18%)
10K6.21 mi3.10 mi4706-1076291-110291-1106213(Top 22%)548(Top 4%)548(Top 10%)
15K9.32 mi3.11 mi5855-1149469-178469-1787895(Top 28%)997(Top 8%)997(Top 18%)
20K12.43 mi3.11 mi6772-917652-183652-1838888(Top 31%)1472(Top 12%)1472(Top 27%)
Half13.11 mi0.68 mi6902-130687-35687-359199(Top 32%)1584(Top 13%)1584(Top 29%)
25K15.53 mi2.42 mi7235-333795-108795-1089614(Top 34%)1927(Top 16%)1927(Top 35%)
30K18.64 mi3.11 mi7754-5191011-2161011-21611328(Top 40%)2939(Top 24%)2939(Top 54%)
20M20.00 mi1.36 mi7947-1931127-1161127-11611248(Top 40%)3053(Top 25%)3053(Top 56%)
21M21.00 mi1.00 mi8172-2251235-1081235-10812714(Top 45%)3975(Top 33%)3975(Top 73%)
35K21.75 mi0.75 mi8242-701283-481283-4810808(Top 38%)2991(Top 24%)2991(Top 55%)
23M23.00 mi1.25 mi8320-781362-791362-7910523(Top 37%)2998(Top 25%)2998(Top 55%)
24M24.00 mi1.00 mi8345-251402-401402-4010200(Top 36%)2895(Top 24%)2895(Top 53%)
40K24.85 mi0.85 mi8378-331452-501452-509861(Top 35%)2841(Top 23%)2841(Top 52%)
25.2M25.20 mi0.35 mi8447-691499-471499-4712562(Top 44%)4241(Top 35%)4241(Top 78%)
Finish26.22 mi1.02 mi8610-1631593-941593-9412167(Top 43%)4004(Top 33%)4004(Top 73%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 28%
×21story building
+97ft-345ft

Overall

7895

Females

997

F18-39

997

5K→10K

3.1 - 6.2 mi

Top 22%
×5story building
+79ft-138ft

Overall

6213

Females

548

F18-39

548

10K→15K

6.2 - 9.3 mi

Top 28%
×3story building
+67ft-78ft

Overall

7895

Females

997

F18-39

997

15K→20K

9.3 - 12.4 mi

Top 31%
×5story building
+106ft-86ft

Overall

8888

Females

1472

F18-39

1472

20K→Half

12.4 - 13.1 mi

Top 32%
×2story building
+19ft-37ft

Overall

9199

Females

1584

F18-39

1584

Half→25K

13.1 - 15.5 mi

Top 34%
×4story building
+66ft-88ft

Overall

9614

Females

1927

F18-39

1927

25K→30K

15.5 - 18.6 mi

Top 40%
×9story building
+181ft-148ft

Overall

11328

Females

2939

F18-39

2939

30K→20M

18.6 - 20.0 mi

Top 40%
×5story building
+64ft-50ft

Overall

11248

Females

3053

F18-39

3053

20M→21M

20.0 - 21.0 mi

Top 45%
×8story building
+106ft-24ft

Overall

12714

Females

3975

F18-39

3975

21M→35K

21.0 - 21.8 mi

Top 38%
×7story building
+17ft-86ft

Overall

10808

Females

2991

F18-39

2991

35K→23M

21.8 - 23.0 mi

Top 37%
×5story building
+23ft-63ft

Overall

10523

Females

2998

F18-39

2998

23M→24M

23.0 - 24.0 mi

Top 36%
×6story building
+12ft-82ft

Overall

10200

Females

2895

F18-39

2895

24M→40K

24.0 - 24.9 mi

Top 35%
×1story
+6ft-20ft

Overall

9861

Females

2841

F18-39

2841

40K→25.2M

24.9 - 25.2 mi

Top 44%
×1story
+13ft-16ft

Overall

12562

Females

4241

F18-39

4241

25.2M→Finish

25.2 - 26.2 mi

Top 43%
×2story building
+22ft-21ft

Overall

12167

Females

4004

F18-39

4004

Passing Analysis

Category:
Athletes Passed
565
Passed By
5545
Net Change
-4980
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3630
5K → 10K41080-1076#3630#4706
10K → 15K141163-1149#4706#5855
15K → 20K18935-917#5855#6772
20K → Half6136-130#6772#6902
Half → 25K52385-333#6902#7235
25K → 30K72591-519#7235#7754
30K → 20M44237-193#7754#7947
20M → 21M46271-225#7947#8172
21M → 35K43113-70#8172#8242
35K → 23M88166-78#8242#8320
23M → 24M6489-25#8320#8345
24M → 40K6598-33#8345#8378
40K → 25.2M2392-69#8378#8447
25.2M → Finish26189-163#8447#8610
TOTALS5655545-4980
📊

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