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BOSTON MARATHON 2025

Heather Nyseth

Bib: 21474•F

MN

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F45-49)
#0 / 1813
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
8:52/mi
27:32
↑ 97↓ 3451.5%
10K· 6.21 mi
8:54/mi
55:11
↑ 79↓ 1380.4%
15K· 9.32 mi
9:13/mi
1:23:50
↑ 67↓ 78
20K· 12.43 mi
9:15/mi
1:52:33
↑ 106↓ 860.1%
Half· 13.11 mi
9:35/mi
1:59:05
↑ 19↓ 370.5%
25K· 15.53 mi
11:14/mi
2:26:19
↑ 66↓ 880.2%
30K· 18.64 mi
12:01/mi
3:03:38
↑ 181↓ 1480.2%
20M
12:46/mi
3:20:59
↑ 64↓ 500.2%
21M
12:57/mi
3:33:56
↑ 106↓ 241.6%
35K· 21.75 mi
13:43/mi
3:44:12
↑ 17↓ 861.7%
23M
11:33/mi
3:58:40
↑ 23↓ 630.6%
24M
14:26/mi
4:13:06
↓ 821.3%
40K· 24.85 mi
11:25/mi
4:22:52
↓ 200.3%
25.2M
15:40/mi
4:28:16
↑ 13↓ 160.2%
Finish· 26.22 mi
9:55/mi
4:38:22
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:59:05
Pace9:05 /mi
2nd Half
Distance13.11 mi
Time2:39:17
Pace12:09 /mi
📊Positive Split: 33.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:27:4527:328:5227:32
8:52
-
10K
6.21 mi11:55:2455:118:5327:39
8:54
+0:02
15K
9.32 mi12:24:031:23:509:0028:39
9:13
+0:19
20K
12.43 mi12:52:461:52:339:0328:43
9:15
+0:02
Half
13.11 mi12:59:181:59:059:056:32
9:35
+0:20
25K
15.53 mi13:26:322:26:199:2527:14
11:14
+1:39
30K
18.64 mi14:03:513:03:389:5137:19
12:01
+0:47
20M
20.00 mi14:21:123:20:5910:0317:21
12:46
+0:45
21M
21.00 mi14:34:093:33:5610:1112:57
12:57
+0:11
35K
21.75 mi14:44:253:44:1210:1910:16
13:43
+0:46
23M
23.00 mi14:58:533:58:4010:2314:28
11:33
-2:10
24M
24.00 mi15:13:194:13:0610:3314:26
14:26
+2:53
40K
24.85 mi15:23:054:22:5210:359:46
11:25
-3:01
25.2M
25.20 mi15:28:294:28:1610:395:24
15:40
+4:15
Finish
26.22 mi15:38:354:38:2210:3710:06
9:55
-5:45

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

8:52 /mi

Average Pace

10:37 /mi

Slowest Pace

15:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:09:11

46% of race

Time at Steady Pace

1:28:47

32% of race

Time at Slower Pace

1:00:24

22% of race

Average Pace: 10:37 /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 mi11:27:4527:328:5227:32
8:52
#21803
10K
6.21 mi11:55:2455:118:5327:39
8:54
#21866
15K
9.32 mi12:24:031:23:509:0028:39
9:13
#22244
20K
12.43 mi12:52:461:52:339:0328:43
9:15
#22184
Half
13.11 mi12:59:181:59:059:056:32
9:35
#22282
25K
15.53 mi13:26:322:26:199:2527:14
11:14
#23173
30K
18.64 mi14:03:513:03:389:5137:19
12:01
#23816
20M
20.00 mi14:21:123:20:5910:0317:21
12:46
#24114
21M
21.00 mi14:34:093:33:5610:1112:57
12:57
#24197
35K
21.75 mi14:44:253:44:1210:1910:16
13:43
#24425
23M
23.00 mi14:58:533:58:4010:2314:28
11:33
#24435
24M
24.00 mi15:13:194:13:0610:3314:26
14:26
#24719
40K
24.85 mi15:23:054:22:5210:359:46
11:25
#24694
25.2M
25.20 mi15:28:294:28:1610:395:24
15:40
#24773
Finish
26.22 mi15:38:354:38:2210:3710:06
9:55
#24728
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi218038516851622923(Top 81%)9062(Top 74%)9062(Top 500%)
10K6.21 mi3.10 mi21866-638535-198535-1921912(Top 77%)8552(Top 70%)8552(Top 472%)
15K9.32 mi3.11 mi22244-3788722-1878722-18722923(Top 81%)9062(Top 74%)9062(Top 500%)
20K12.43 mi3.11 mi22184+608696+268696+2622045(Top 78%)8611(Top 70%)8611(Top 475%)
Half13.11 mi0.68 mi22282-988758-628758-6223755(Top 84%)9578(Top 78%)9578(Top 528%)
25K15.53 mi2.42 mi23173-8919230-4729230-47225521(Top 90%)10581(Top 87%)10581(Top 584%)
30K18.64 mi3.11 mi23816-6439637-4079637-40725605(Top 90%)10731(Top 88%)10731(Top 592%)
20M20.00 mi1.36 mi24114-2989821-1849821-18426205(Top 92%)11119(Top 91%)11119(Top 613%)
21M21.00 mi1.00 mi24197-839871-509871-5024971(Top 88%)10554(Top 86%)10554(Top 582%)
35K21.75 mi0.75 mi24425-22810007-13610007-13627505(Top 97%)11857(Top 97%)11857(Top 654%)
23M23.00 mi1.25 mi24435-1010025-1810025-1824340(Top 86%)10268(Top 84%)10268(Top 566%)
24M24.00 mi1.00 mi24719-28410196-17110196-17127842(Top 98%)12042(Top 98%)12042(Top 664%)
40K24.85 mi0.85 mi24694+2510193+310193+323984(Top 84%)10161(Top 83%)10161(Top 560%)
25.2M25.20 mi0.35 mi24773-7910239-4610239-4627530(Top 97%)11902(Top 97%)11902(Top 656%)
Finish26.22 mi1.02 mi24728+4510223+1610223+1622623(Top 80%)9480(Top 78%)9480(Top 523%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 81%
×21story building
+97ft-345ft

Overall

22923

Females

9062

F45-49

9062

5K→10K

3.1 - 6.2 mi

Top 77%
×5story building
+79ft-138ft

Overall

21912

Females

8552

F45-49

8552

10K→15K

6.2 - 9.3 mi

Top 81%
×3story building
+67ft-78ft

Overall

22923

Females

9062

F45-49

9062

15K→20K

9.3 - 12.4 mi

Top 78%
×5story building
+106ft-86ft

Overall

22045

Females

8611

F45-49

8611

20K→Half

12.4 - 13.1 mi

Top 84%
×2story building
+19ft-37ft

Overall

23755

Females

9578

F45-49

9578

Half→25K

13.1 - 15.5 mi

Top 90%
×4story building
+66ft-88ft

Overall

25521

Females

10581

F45-49

10581

25K→30K

15.5 - 18.6 mi

Top 90%
×9story building
+181ft-148ft

Overall

25605

Females

10731

F45-49

10731

30K→20M

18.6 - 20.0 mi

Top 92%
×5story building
+64ft-50ft

Overall

26205

Females

11119

F45-49

11119

20M→21M

20.0 - 21.0 mi

Top 88%
×8story building
+106ft-24ft

Overall

24971

Females

10554

F45-49

10554

21M→35K

21.0 - 21.8 mi

Top 97%
×7story building
+17ft-86ft

Overall

27505

Females

11857

F45-49

11857

35K→23M

21.8 - 23.0 mi

Top 86%
×5story building
+23ft-63ft

Overall

24340

Females

10268

F45-49

10268

23M→24M

23.0 - 24.0 mi

Top 98%
×6story building
+12ft-82ft

Overall

27842

Females

12042

F45-49

12042

24M→40K

24.0 - 24.9 mi

Top 84%
×1story
+6ft-20ft

Overall

23984

Females

10161

F45-49

10161

40K→25.2M

24.9 - 25.2 mi

Top 97%
×1story
+13ft-16ft

Overall

27530

Females

11902

F45-49

11902

25.2M→Finish

25.2 - 26.2 mi

Top 80%
×2story building
+22ft-21ft

Overall

22623

Females

9480

F45-49

9480

Passing Analysis

Category:
Athletes Passed
830
Passed By
3755
Net Change
-2925
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21803
5K → 10K233296-63#21803#21866
10K → 15K98476-378#21866#22244
15K → 20K210150+60#22244#22184
20K → Half11109-98#22184#22282
Half → 25K15906-891#22282#23173
25K → 30K39682-643#23173#23816
30K → 20M21319-298#23816#24114
20M → 21M31114-83#24114#24197
21M → 35K5233-228#24197#24425
35K → 23M5767-10#24425#24435
23M → 24M6290-284#24435#24719
24M → 40K4621+25#24719#24694
40K → 25.2M281-79#24694#24773
25.2M → Finish5611+45#24773#24728
TOTALS8303755-2925
📊

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