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BOSTON MARATHON 2025

Heather Olsen

Bib: 20617•F

UT

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F40-44)
#0 / 1718
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
7:50/mi
24:21
↑ 97↓ 3451.5%
10K· 6.21 mi
8:06/mi
49:32
↑ 79↓ 1380.4%
15K· 9.32 mi
8:38/mi
1:16:22
↑ 67↓ 78
20K· 12.43 mi
9:03/mi
1:44:30
↑ 106↓ 860.1%
Half· 13.11 mi
8:49/mi
1:50:31
↑ 19↓ 370.5%
25K· 15.53 mi
9:23/mi
2:13:17
↑ 66↓ 880.2%
30K· 18.64 mi
10:57/mi
2:47:19
↑ 181↓ 1480.2%
20M
9:46/mi
3:00:35
↑ 64↓ 500.2%
21M
11:04/mi
3:11:39
↑ 106↓ 241.6%
35K· 21.75 mi
9:27/mi
3:18:43
↑ 17↓ 861.7%
23M
9:57/mi
3:31:11
↑ 23↓ 630.6%
24M
9:39/mi
3:40:50
↓ 821.3%
40K· 24.85 mi
9:56/mi
3:49:20
↓ 200.3%
25.2M
11:04/mi
3:53:09
↑ 13↓ 160.2%
Finish· 26.22 mi
10:08/mi
4:03:29
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:50:31
Pace8:26 /mi
2nd Half
Distance13.11 mi
Time2:12:58
Pace10:09 /mi
📊Positive Split: 20.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:0224:217:5024:21
7:50
-
10K
6.21 mi11:43:1349:327:5825:11
8:06
+0:16
15K
9.32 mi12:10:031:16:228:1226:50
8:38
+0:32
20K
12.43 mi12:38:111:44:308:2528:08
9:03
+0:25
Half
13.11 mi12:44:121:50:318:266:01
8:49
-0:14
25K
15.53 mi13:06:582:13:178:3522:46
9:23
+0:34
30K
18.64 mi13:41:002:47:198:5934:02
10:57
+1:34
20M
20.00 mi13:54:163:00:359:0213:16
9:46
-1:11
21M
21.00 mi14:05:203:11:399:0811:04
11:04
+1:18
35K
21.75 mi14:12:243:18:439:087:04
9:27
-1:37
23M
23.00 mi14:24:523:31:119:1112:28
9:57
+0:30
24M
24.00 mi14:34:313:40:509:129:39
9:39
-0:18
40K
24.85 mi14:43:013:49:209:148:30
9:56
+0:17
25.2M
25.20 mi14:46:503:53:099:153:49
11:04
+1:08
Finish
26.22 mi14:57:104:03:299:1810:20
10:08
-0:56

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

7:50 /mi

Average Pace

9:18 /mi

Slowest Pace

11:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:50:31

45% of race

Time at Steady Pace

1:13:43

30% of race

Time at Slower Pace

59:15

24% of race

Average Pace: 9:17 /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 mi11:18:0224:217:5024:21
7:50
#15174
10K
6.21 mi11:43:1349:327:5825:11
8:06
#16287
15K
9.32 mi12:10:031:16:228:1226:50
8:38
#17727
20K
12.43 mi12:38:111:44:308:2528:08
9:03
#18714
Half
13.11 mi12:44:121:50:318:266:01
8:49
#18841
25K
15.53 mi13:06:582:13:178:3522:46
9:23
#19398
30K
18.64 mi13:41:002:47:198:5934:02
10:57
#20754
20M
20.00 mi13:54:163:00:359:0213:16
9:46
#20696
21M
21.00 mi14:05:203:11:399:0811:04
11:04
#20760
35K
21.75 mi14:12:243:18:439:087:04
9:27
#20744
23M
23.00 mi14:24:523:31:119:1112:28
9:57
#20744
24M
24.00 mi14:34:313:40:509:129:39
9:39
#20743
40K
24.85 mi14:43:013:49:209:148:30
9:56
#20734
25.2M
25.20 mi14:46:503:53:099:153:49
11:04
#20734
Finish
26.22 mi14:57:104:03:299:1810:20
10:08
#20831
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi151744644464420144(Top 71%)7517(Top 61%)7517(Top 438%)
10K6.21 mi3.10 mi16287-11135321-6775321-67717262(Top 61%)5866(Top 48%)5866(Top 341%)
15K9.32 mi3.11 mi17727-14406163-8426163-84220144(Top 71%)7517(Top 61%)7517(Top 438%)
20K12.43 mi3.11 mi18714-9876745-5826745-58221255(Top 75%)8181(Top 67%)8181(Top 476%)
Half13.11 mi0.68 mi18841-1276817-726817-7221034(Top 74%)8067(Top 66%)8067(Top 470%)
25K15.53 mi2.42 mi19398-5577145-3287145-32821513(Top 76%)8366(Top 68%)8366(Top 487%)
30K18.64 mi3.11 mi20754-13567957-8127957-81223925(Top 84%)9830(Top 80%)9830(Top 572%)
20M20.00 mi1.36 mi20696+587941+167941+1620184(Top 71%)7904(Top 65%)7904(Top 460%)
21M21.00 mi1.00 mi20760-647989-487989-4821593(Top 76%)8760(Top 72%)8760(Top 510%)
35K21.75 mi0.75 mi20744+167999-107999-1020164(Top 71%)8067(Top 66%)8067(Top 470%)
23M23.00 mi1.25 mi207448019-208019-2020354(Top 72%)8225(Top 67%)8225(Top 479%)
24M24.00 mi1.00 mi20743+18038-198038-1920210(Top 71%)8194(Top 67%)8194(Top 477%)
40K24.85 mi0.85 mi20734+98051-138051-1320279(Top 71%)8299(Top 68%)8299(Top 483%)
25.2M25.20 mi0.35 mi207348059-88059-820876(Top 73%)8590(Top 70%)8590(Top 500%)
Finish26.22 mi1.02 mi20831-978132-738132-7323360(Top 82%)9846(Top 81%)9846(Top 573%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 71%
×21story building
+97ft-345ft

Overall

20144

Females

7517

F40-44

7517

5K→10K

3.1 - 6.2 mi

Top 61%
×5story building
+79ft-138ft

Overall

17262

Females

5866

F40-44

5866

10K→15K

6.2 - 9.3 mi

Top 71%
×3story building
+67ft-78ft

Overall

20144

Females

7517

F40-44

7517

15K→20K

9.3 - 12.4 mi

Top 75%
×5story building
+106ft-86ft

Overall

21255

Females

8181

F40-44

8181

20K→Half

12.4 - 13.1 mi

Top 74%
×2story building
+19ft-37ft

Overall

21034

Females

8067

F40-44

8067

Half→25K

13.1 - 15.5 mi

Top 76%
×4story building
+66ft-88ft

Overall

21513

Females

8366

F40-44

8366

25K→30K

15.5 - 18.6 mi

Top 84%
×9story building
+181ft-148ft

Overall

23925

Females

9830

F40-44

9830

30K→20M

18.6 - 20.0 mi

Top 71%
×5story building
+64ft-50ft

Overall

20184

Females

7904

F40-44

7904

20M→21M

20.0 - 21.0 mi

Top 76%
×8story building
+106ft-24ft

Overall

21593

Females

8760

F40-44

8760

21M→35K

21.0 - 21.8 mi

Top 71%
×7story building
+17ft-86ft

Overall

20164

Females

8067

F40-44

8067

35K→23M

21.8 - 23.0 mi

Top 72%
×5story building
+23ft-63ft

Overall

20354

Females

8225

F40-44

8225

23M→24M

23.0 - 24.0 mi

Top 71%
×6story building
+12ft-82ft

Overall

20210

Females

8194

F40-44

8194

24M→40K

24.0 - 24.9 mi

Top 71%
×1story
+6ft-20ft

Overall

20279

Females

8299

F40-44

8299

40K→25.2M

24.9 - 25.2 mi

Top 73%
×1story
+13ft-16ft

Overall

20876

Females

8590

F40-44

8590

25.2M→Finish

25.2 - 26.2 mi

Top 82%
×2story building
+22ft-21ft

Overall

23360

Females

9846

F40-44

9846

Passing Analysis

Category:
Athletes Passed
733
Passed By
6390
Net Change
-5657
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15174
5K → 10K591172-1113#15174#16287
10K → 15K261466-1440#16287#17727
15K → 20K331020-987#17727#18714
20K → Half10137-127#18714#18841
Half → 25K55612-557#18841#19398
25K → 30K291385-1356#19398#20754
30K → 20M13072+58#20754#20696
20M → 21M75139-64#20696#20760
21M → 35K6347+16#20760#20744
35K → 23M94940#20744#20744
23M → 24M5857+1#20744#20743
24M → 40K6051+9#20743#20734
40K → 25.2M25250#20734#20734
25.2M → Finish16113-97#20734#20831
TOTALS7336390-5657
📊

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