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BOSTON MARATHON 2025

Megan Jansen

Bib: 15894•F

CA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 38%
Gender (Female)
#0 / 12228
Top 21%
Division (F18-39)
#0 / 5469
Top 36%
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
7:08/mi
22:11
↑ 97↓ 3451.5%
10K· 6.21 mi
7:02/mi
44:03
↑ 79↓ 1380.4%
15K· 9.32 mi
7:06/mi
1:06:06
↑ 67↓ 78
20K· 12.43 mi
7:24/mi
1:29:06
↑ 106↓ 860.1%
Half· 13.11 mi
7:20/mi
1:34:06
↑ 19↓ 370.5%
25K· 15.53 mi
7:47/mi
1:52:58
↑ 66↓ 880.2%
30K· 18.64 mi
8:02/mi
2:17:54
↑ 181↓ 1480.2%
20M
8:15/mi
2:29:07
↑ 64↓ 500.2%
21M
8:56/mi
2:38:03
↑ 106↓ 241.6%
35K· 21.75 mi
8:07/mi
2:44:07
↑ 17↓ 861.7%
23M
8:28/mi
2:54:43
↑ 23↓ 630.6%
24M
8:21/mi
3:03:04
↓ 821.3%
40K· 24.85 mi
8:29/mi
3:10:19
↓ 200.3%
25.2M
9:17/mi
3:13:31
↑ 13↓ 160.2%
Finish· 26.22 mi
8:09/mi
3:21:49
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:06
Pace7:11 /mi
2nd Half
Distance13.11 mi
Time1:47:43
Pace8:13 /mi
📊Positive Split: 14.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:3522:117:0822:11
7:08
-
10K
6.21 mi11:16:2744:037:0521:52
7:02
-0:06
15K
9.32 mi11:38:301:06:067:0622:03
7:06
+0:04
20K
12.43 mi12:01:301:29:067:1023:00
7:24
+0:18
Half
13.11 mi12:06:301:34:067:115:00
7:20
-0:04
25K
15.53 mi12:25:221:52:587:1618:52
7:47
+0:27
30K
18.64 mi12:50:182:17:547:2424:56
8:02
+0:15
20M
20.00 mi13:01:312:29:077:2711:13
8:15
+0:13
21M
21.00 mi13:10:272:38:037:328:56
8:56
+0:41
35K
21.75 mi13:16:312:44:077:336:04
8:07
-0:49
23M
23.00 mi13:27:072:54:437:3610:36
8:28
+0:21
24M
24.00 mi13:35:283:03:047:388:21
8:21
-0:07
40K
24.85 mi13:42:433:10:197:397:15
8:29
+0:08
25.2M
25.20 mi13:45:553:13:317:413:12
9:17
+0:48
Finish
26.22 mi13:54:133:21:497:428:18
8:09
-1:08

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

7:02 /mi

Average Pace

7:42 /mi

Slowest Pace

9:17 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:52:58

56% of race

Time at Steady Pace

58:52

29% of race

Time at Slower Pace

29:59

15% of race

Average Pace: 7:42 /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 mi10:54:3522:117:0822:11
7:08
#8998
10K
6.21 mi11:16:2744:037:0521:52
7:02
#8570
15K
9.32 mi11:38:301:06:067:0622:03
7:06
#8421
20K
12.43 mi12:01:301:29:067:1023:00
7:24
#8728
Half
13.11 mi12:06:301:34:067:115:00
7:20
#8780
25K
15.53 mi12:25:221:52:587:1618:52
7:47
#9331
30K
18.64 mi12:50:182:17:547:2424:56
8:02
#9691
20M
20.00 mi13:01:312:29:077:2711:13
8:15
#9843
21M
21.00 mi13:10:272:38:037:328:56
8:56
#10056
35K
21.75 mi13:16:312:44:077:336:04
8:07
#10150
23M
23.00 mi13:27:072:54:437:3610:36
8:28
#10319
24M
24.00 mi13:35:283:03:047:388:21
8:21
#10459
40K
24.85 mi13:42:433:10:197:397:15
8:29
#10541
25.2M
25.20 mi13:45:553:13:317:413:12
9:17
#10565
Finish
26.22 mi13:54:133:21:497:428:18
8:09
#10666
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi8998137413748336(Top 29%)1177(Top 10%)1177(Top 22%)
10K6.21 mi3.10 mi8570+4281216+1581216+1588226(Top 29%)1087(Top 9%)1087(Top 20%)
15K9.32 mi3.11 mi8421+1491167+491167+498336(Top 29%)1177(Top 10%)1177(Top 22%)
20K12.43 mi3.11 mi8728-3071308-1411308-1419953(Top 35%)1942(Top 16%)1942(Top 36%)
Half13.11 mi0.68 mi8780-521337-291337-2910354(Top 36%)2134(Top 17%)2134(Top 39%)
25K15.53 mi2.42 mi9331-5511598-2611598-26112189(Top 43%)3210(Top 26%)3210(Top 59%)
30K18.64 mi3.11 mi9691-3601821-2231821-22311576(Top 41%)3077(Top 25%)3077(Top 56%)
20M20.00 mi1.36 mi9843-1521915-941915-9412181(Top 43%)3531(Top 29%)3531(Top 65%)
21M21.00 mi1.00 mi10056-2132063-1482063-14813131(Top 46%)4176(Top 34%)4176(Top 76%)
35K21.75 mi0.75 mi10150-942138-752138-7513000(Top 46%)4148(Top 34%)4148(Top 76%)
23M23.00 mi1.25 mi10319-1692271-1332271-13313108(Top 46%)4317(Top 35%)4317(Top 79%)
24M24.00 mi1.00 mi10459-1402366-952366-9513573(Top 48%)4596(Top 38%)4596(Top 84%)
40K24.85 mi0.85 mi10541-822435-692435-6913306(Top 47%)4593(Top 38%)4593(Top 84%)
25.2M25.20 mi0.35 mi10565-242468-332468-3313356(Top 47%)4665(Top 38%)4665(Top 85%)
Finish26.22 mi1.02 mi10666-1012557-892557-8913908(Top 49%)4898(Top 40%)4898(Top 90%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 29%
×21story building
+97ft-345ft

Overall

8336

Females

1177

F18-39

1177

5K→10K

3.1 - 6.2 mi

Top 29%
×5story building
+79ft-138ft

Overall

8226

Females

1087

F18-39

1087

10K→15K

6.2 - 9.3 mi

Top 29%
×3story building
+67ft-78ft

Overall

8336

Females

1177

F18-39

1177

15K→20K

9.3 - 12.4 mi

Top 35%
×5story building
+106ft-86ft

Overall

9953

Females

1942

F18-39

1942

20K→Half

12.4 - 13.1 mi

Top 36%
×2story building
+19ft-37ft

Overall

10354

Females

2134

F18-39

2134

Half→25K

13.1 - 15.5 mi

Top 43%
×4story building
+66ft-88ft

Overall

12189

Females

3210

F18-39

3210

25K→30K

15.5 - 18.6 mi

Top 41%
×9story building
+181ft-148ft

Overall

11576

Females

3077

F18-39

3077

30K→20M

18.6 - 20.0 mi

Top 43%
×5story building
+64ft-50ft

Overall

12181

Females

3531

F18-39

3531

20M→21M

20.0 - 21.0 mi

Top 46%
×8story building
+106ft-24ft

Overall

13131

Females

4176

F18-39

4176

21M→35K

21.0 - 21.8 mi

Top 46%
×7story building
+17ft-86ft

Overall

13000

Females

4148

F18-39

4148

35K→23M

21.8 - 23.0 mi

Top 46%
×5story building
+23ft-63ft

Overall

13108

Females

4317

F18-39

4317

23M→24M

23.0 - 24.0 mi

Top 48%
×6story building
+12ft-82ft

Overall

13573

Females

4596

F18-39

4596

24M→40K

24.0 - 24.9 mi

Top 47%
×1story
+6ft-20ft

Overall

13306

Females

4593

F18-39

4593

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

13356

Females

4665

F18-39

4665

25.2M→Finish

25.2 - 26.2 mi

Top 49%
×2story building
+22ft-21ft

Overall

13908

Females

4898

F18-39

4898

Passing Analysis

Category:
Athletes Passed
1401
Passed By
3065
Net Change
-1668
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8998
5K → 10K49769+428#8998#8570
10K → 15K22677+149#8570#8421
15K → 20K86393-307#8421#8728
20K → Half1264-52#8728#8780
Half → 25K52603-551#8780#9331
25K → 30K134494-360#9331#9691
30K → 20M69220-152#9691#9843
20M → 21M52263-213#9843#10056
21M → 35K44137-94#10056#10150
35K → 23M65234-169#10150#10319
23M → 24M40180-140#10319#10459
24M → 40K44126-82#10459#10541
40K → 25.2M3559-24#10541#10565
25.2M → Finish45146-101#10565#10666
TOTALS14013065-1668
📊

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