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BOSTON MARATHON 2025

Erin Sondej

Bib: 18383•F

PA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 38%
Gender (Female)
#0 / 12228
Top 22%
Masters (Masters Women)
#0 / 6759
Top 9%
Division (F40-44)
#0 / 1718
Top 20%
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
7:36/mi
23:37
↑ 97↓ 3451.5%
10K· 6.21 mi
7:38/mi
47:21
↑ 79↓ 1380.4%
15K· 9.32 mi
7:39/mi
1:11:06
↑ 67↓ 78
20K· 12.43 mi
7:48/mi
1:35:21
↑ 106↓ 860.1%
Half· 13.11 mi
7:34/mi
1:40:31
↑ 19↓ 370.5%
25K· 15.53 mi
7:46/mi
1:59:21
↑ 66↓ 880.2%
30K· 18.64 mi
8:01/mi
2:24:15
↑ 181↓ 1480.2%
20M
7:58/mi
2:35:05
↑ 64↓ 500.2%
21M
8:24/mi
2:43:29
↑ 106↓ 241.6%
35K· 21.75 mi
7:30/mi
2:49:06
↑ 17↓ 861.7%
23M
7:48/mi
2:58:52
↑ 23↓ 630.6%
24M
7:22/mi
3:06:14
↓ 821.3%
40K· 24.85 mi
7:26/mi
3:12:35
↓ 200.3%
25.2M
8:16/mi
3:15:26
↑ 13↓ 160.2%
Finish· 26.22 mi
7:01/mi
3:22:35
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:31
Pace7:40 /mi
2nd Half
Distance13.11 mi
Time1:42:04
Pace7:47 /mi
📊Positive Split: 1.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:2723:377:3623:37
7:36
-
10K
6.21 mi11:39:1147:217:3723:44
7:38
+0:02
15K
9.32 mi12:02:561:11:067:3823:45
7:39
+0:01
20K
12.43 mi12:27:111:35:217:4024:15
7:48
+0:09
Half
13.11 mi12:32:211:40:317:405:10
7:34
-0:14
25K
15.53 mi12:51:111:59:217:4118:50
7:46
+0:12
30K
18.64 mi13:16:052:24:157:4424:54
8:01
+0:15
20M
20.00 mi13:26:552:35:057:4510:50
7:58
-0:03
21M
21.00 mi13:35:192:43:297:478:24
8:24
+0:26
35K
21.75 mi13:40:562:49:067:475:37
7:30
-0:54
23M
23.00 mi13:50:422:58:527:479:46
7:48
+0:18
24M
24.00 mi13:58:043:06:147:467:22
7:22
-0:26
40K
24.85 mi14:04:253:12:357:456:21
7:26
+0:04
25.2M
25.20 mi14:07:163:15:267:452:51
8:16
+0:50
Finish
26.22 mi14:14:253:22:357:447:09
7:01
-1:15

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

7:01 /mi

Average Pace

7:44 /mi

Slowest Pace

8:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:42:45

51% of race

Time at Steady Pace

1:31:26

45% of race

Time at Slower Pace

8:24

4% of race

Average Pace: 7:44 /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 mi11:15:2723:377:3623:37
7:36
#13143
10K
6.21 mi11:39:1147:217:3723:44
7:38
#13221
15K
9.32 mi12:02:561:11:067:3823:45
7:39
#13120
20K
12.43 mi12:27:111:35:217:4024:15
7:48
#13134
Half
13.11 mi12:32:211:40:317:405:10
7:34
#13079
25K
15.53 mi12:51:111:59:217:4118:50
7:46
#12886
30K
18.64 mi13:16:052:24:157:4424:54
8:01
#12580
20M
20.00 mi13:26:552:35:057:4510:50
7:58
#12363
21M
21.00 mi13:35:192:43:297:478:24
8:24
#12174
35K
21.75 mi13:40:562:49:067:475:37
7:30
#12036
23M
23.00 mi13:50:422:58:527:479:46
7:48
#11781
24M
24.00 mi13:58:043:06:147:467:22
7:22
#11496
40K
24.85 mi14:04:253:12:357:456:21
7:26
#11244
25.2M
25.20 mi14:07:163:15:267:452:51
8:16
#11164
Finish
26.22 mi14:14:253:22:357:447:09
7:01
#10911
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi131433393339312995(Top 46%)3437(Top 28%)3437(Top 200%)
10K6.21 mi3.10 mi13221-783475-823475-8213374(Top 47%)3591(Top 29%)3591(Top 209%)
15K9.32 mi3.11 mi13120+1013461+143461+1412995(Top 46%)3437(Top 28%)3437(Top 200%)
20K12.43 mi3.11 mi13134-143518-573518-5713313(Top 47%)3713(Top 30%)3713(Top 216%)
Half13.11 mi0.68 mi13079+553491+273491+2712379(Top 44%)3146(Top 26%)3146(Top 183%)
25K15.53 mi2.42 mi12886+1933412+793412+7912087(Top 43%)3158(Top 26%)3158(Top 184%)
30K18.64 mi3.11 mi12580+3063314+983314+9811490(Top 40%)3026(Top 25%)3026(Top 176%)
20M20.00 mi1.36 mi12363+2173229+853229+8510277(Top 36%)2578(Top 21%)2578(Top 150%)
21M21.00 mi1.00 mi12174+1893170+593170+599869(Top 35%)2553(Top 21%)2553(Top 149%)
35K21.75 mi0.75 mi12036+1383115+553115+558743(Top 31%)2022(Top 17%)2022(Top 118%)
23M23.00 mi1.25 mi11781+2553019+963019+968621(Top 30%)2099(Top 17%)2099(Top 122%)
24M24.00 mi1.00 mi11496+2852915+1042915+1046879(Top 24%)1423(Top 12%)1423(Top 83%)
40K24.85 mi0.85 mi11244+2522817+982817+986421(Top 23%)1320(Top 11%)1320(Top 77%)
25.2M25.20 mi0.35 mi11164+802795+222795+227543(Top 27%)1883(Top 15%)1883(Top 110%)
Finish26.22 mi1.02 mi10911+2532695+1002695+1005881(Top 21%)1217(Top 10%)1217(Top 71%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
×21story building
+97ft-345ft

Overall

12995

Females

3437

F40-44

3437

5K→10K

3.1 - 6.2 mi

Top 47%
×5story building
+79ft-138ft

Overall

13374

Females

3591

F40-44

3591

10K→15K

6.2 - 9.3 mi

Top 46%
×3story building
+67ft-78ft

Overall

12995

Females

3437

F40-44

3437

15K→20K

9.3 - 12.4 mi

Top 47%
×5story building
+106ft-86ft

Overall

13313

Females

3713

F40-44

3713

20K→Half

12.4 - 13.1 mi

Top 44%
×2story building
+19ft-37ft

Overall

12379

Females

3146

F40-44

3146

Half→25K

13.1 - 15.5 mi

Top 43%
×4story building
+66ft-88ft

Overall

12087

Females

3158

F40-44

3158

25K→30K

15.5 - 18.6 mi

Top 40%
×9story building
+181ft-148ft

Overall

11490

Females

3026

F40-44

3026

30K→20M

18.6 - 20.0 mi

Top 36%
×5story building
+64ft-50ft

Overall

10277

Females

2578

F40-44

2578

20M→21M

20.0 - 21.0 mi

Top 35%
×8story building
+106ft-24ft

Overall

9869

Females

2553

F40-44

2553

21M→35K

21.0 - 21.8 mi

Top 31%
×7story building
+17ft-86ft

Overall

8743

Females

2022

F40-44

2022

35K→23M

21.8 - 23.0 mi

Top 30%
×5story building
+23ft-63ft

Overall

8621

Females

2099

F40-44

2099

23M→24M

23.0 - 24.0 mi

Top 24%
×6story building
+12ft-82ft

Overall

6879

Females

1423

F40-44

1423

24M→40K

24.0 - 24.9 mi

Top 23%
×1story
+6ft-20ft

Overall

6421

Females

1320

F40-44

1320

40K→25.2M

24.9 - 25.2 mi

Top 27%
×1story
+13ft-16ft

Overall

7543

Females

1883

F40-44

1883

25.2M→Finish

25.2 - 26.2 mi

Top 21%
×2story building
+22ft-21ft

Overall

5881

Females

1217

F40-44

1217

Passing Analysis

Category:
Athletes Passed
3157
Passed By
925
Net Change
+2232
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13143
5K → 10K252330-78#13143#13221
10K → 15K243142+101#13221#13120
15K → 20K201215-14#13120#13134
20K → Half6914+55#13134#13079
Half → 25K26067+193#13079#12886
25K → 30K39185+306#12886#12580
30K → 20M23417+217#12580#12363
20M → 21M21627+189#12363#12174
21M → 35K1446+138#12174#12036
35K → 23M26510+255#12036#11781
23M → 24M2883+285#11781#11496
24M → 40K2553+252#11496#11244
40K → 25.2M855+80#11244#11164
25.2M → Finish2541+253#11164#10911
TOTALS3157925+2232
📊

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