Boston Marathon logo
BOSTON MARATHON 2025

Heidi Cook

Bib: 27177•F

MA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 47%
Masters (Masters Women)
#0 / 6759
Top 34%
Division (F45-49)
#0 / 1813
Top 42%
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
8:09/mi
25:18
↑ 97↓ 3451.5%
10K· 6.21 mi
8:12/mi
50:47
↑ 79↓ 1380.4%
15K· 9.32 mi
8:28/mi
1:17:05
↑ 67↓ 78
20K· 12.43 mi
8:29/mi
1:43:27
↑ 106↓ 860.1%
Half· 13.11 mi
8:23/mi
1:49:10
↑ 19↓ 370.5%
25K· 15.53 mi
8:29/mi
2:09:44
↑ 66↓ 880.2%
30K· 18.64 mi
8:39/mi
2:36:35
↑ 181↓ 1480.2%
20M
8:44/mi
2:48:27
↑ 64↓ 500.2%
21M
9:03/mi
2:57:30
↑ 106↓ 241.6%
35K· 21.75 mi
8:44/mi
3:04:02
↑ 17↓ 861.7%
23M
8:30/mi
3:14:41
↑ 23↓ 630.6%
24M
8:19/mi
3:23:00
↓ 821.3%
40K· 24.85 mi
8:32/mi
3:30:18
↓ 200.3%
25.2M
9:17/mi
3:33:30
↑ 13↓ 160.2%
Finish· 26.22 mi
8:43/mi
3:42:23
↑ 22↓ 21

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:10
Pace8:20 /mi
2nd Half
Distance13.11 mi
Time1:53:13
Pace8:38 /mi
📊Positive Split: 3.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:40:5625:188:0925:18
8:09
-
10K
6.21 mi12:06:2550:478:1025:29
8:12
+0:03
15K
9.32 mi12:32:431:17:058:1626:18
8:28
+0:16
20K
12.43 mi12:59:051:43:278:1926:22
8:29
+0:01
Half
13.11 mi13:04:481:49:108:205:43
8:23
-0:06
25K
15.53 mi13:25:222:09:448:2120:34
8:29
+0:06
30K
18.64 mi13:52:132:36:358:2426:51
8:39
+0:10
20M
20.00 mi14:04:052:48:278:2511:52
8:44
+0:05
21M
21.00 mi14:13:082:57:308:279:03
9:03
+0:19
35K
21.75 mi14:19:403:04:028:286:32
8:44
-0:19
23M
23.00 mi14:30:193:14:418:2810:39
8:30
-0:14
24M
24.00 mi14:38:383:23:008:288:19
8:19
-0:11
40K
24.85 mi14:45:563:30:188:287:18
8:32
+0:13
25.2M
25.20 mi14:49:083:33:308:283:12
9:17
+0:45
Finish
26.22 mi14:58:013:42:238:298:53
8:43
-0:34

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

8:09 /mi

Average Pace

8:29 /mi

Slowest Pace

9:17 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:30:08

94% of race

Time at Steady Pace

12:15

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:29 /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 mi11:40:5625:188:0925:18
8:09
#17692
10K
6.21 mi12:06:2550:478:1025:29
8:12
#17791
15K
9.32 mi12:32:431:17:058:1626:18
8:28
#18212
20K
12.43 mi12:59:051:43:278:1926:22
8:29
#18155
Half
13.11 mi13:04:481:49:108:205:43
8:23
#18145
25K
15.53 mi13:25:222:09:448:2120:34
8:29
#17935
30K
18.64 mi13:52:132:36:358:2426:51
8:39
#17464
20M
20.00 mi14:04:052:48:278:2511:52
8:44
#17289
21M
21.00 mi14:13:082:57:308:279:03
9:03
#17037
35K
21.75 mi14:19:403:04:028:286:32
8:44
#17025
23M
23.00 mi14:30:193:14:418:2810:39
8:30
#16785
24M
24.00 mi14:38:383:23:008:288:19
8:19
#16611
40K
24.85 mi14:45:563:30:188:287:18
8:32
#16477
25.2M
25.20 mi14:49:083:33:308:283:12
9:17
#16427
Finish
26.22 mi14:58:013:42:238:298:53
8:43
#16460
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi176926148614819131(Top 67%)6968(Top 57%)6968(Top 384%)
10K6.21 mi3.10 mi17791-996201-536201-5317914(Top 63%)6244(Top 51%)6244(Top 344%)
15K9.32 mi3.11 mi18212-4216452-2516452-25119131(Top 67%)6968(Top 57%)6968(Top 384%)
20K12.43 mi3.11 mi18155+576427+256427+2518150(Top 64%)6420(Top 53%)6420(Top 354%)
Half13.11 mi0.68 mi18145+106426+16426+118487(Top 65%)6601(Top 54%)6601(Top 364%)
25K15.53 mi2.42 mi17935+2106318+1086318+10817087(Top 60%)5900(Top 48%)5900(Top 325%)
30K18.64 mi3.11 mi17464+4716097+2216097+22115664(Top 55%)5267(Top 43%)5267(Top 291%)
20M20.00 mi1.36 mi17289+1756017+806017+8015288(Top 54%)5203(Top 43%)5203(Top 287%)
21M21.00 mi1.00 mi17037+2525898+1195898+11913847(Top 49%)4553(Top 37%)4553(Top 251%)
35K21.75 mi0.75 mi17025+125914-165914-1616910(Top 60%)6280(Top 51%)6280(Top 346%)
23M23.00 mi1.25 mi16785+2405803+1115803+11113379(Top 47%)4475(Top 37%)4475(Top 247%)
24M24.00 mi1.00 mi16611+1745718+855718+8513413(Top 47%)4534(Top 37%)4534(Top 250%)
40K24.85 mi0.85 mi16477+1345676+425676+4213707(Top 48%)4818(Top 39%)4818(Top 266%)
25.2M25.20 mi0.35 mi16427+505655+215655+2113443(Top 47%)4752(Top 39%)4752(Top 262%)
Finish26.22 mi1.02 mi16460-335705-505705-5017593(Top 62%)6861(Top 56%)6861(Top 378%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 67%
×21story building
+97ft-345ft

Overall

19131

Females

6968

F45-49

6968

5K→10K

3.1 - 6.2 mi

Top 63%
×5story building
+79ft-138ft

Overall

17914

Females

6244

F45-49

6244

10K→15K

6.2 - 9.3 mi

Top 67%
×3story building
+67ft-78ft

Overall

19131

Females

6968

F45-49

6968

15K→20K

9.3 - 12.4 mi

Top 64%
×5story building
+106ft-86ft

Overall

18150

Females

6420

F45-49

6420

20K→Half

12.4 - 13.1 mi

Top 65%
×2story building
+19ft-37ft

Overall

18487

Females

6601

F45-49

6601

Half→25K

13.1 - 15.5 mi

Top 60%
×4story building
+66ft-88ft

Overall

17087

Females

5900

F45-49

5900

25K→30K

15.5 - 18.6 mi

Top 55%
×9story building
+181ft-148ft

Overall

15664

Females

5267

F45-49

5267

30K→20M

18.6 - 20.0 mi

Top 54%
×5story building
+64ft-50ft

Overall

15288

Females

5203

F45-49

5203

20M→21M

20.0 - 21.0 mi

Top 49%
×8story building
+106ft-24ft

Overall

13847

Females

4553

F45-49

4553

21M→35K

21.0 - 21.8 mi

Top 60%
×7story building
+17ft-86ft

Overall

16910

Females

6280

F45-49

6280

35K→23M

21.8 - 23.0 mi

Top 47%
×5story building
+23ft-63ft

Overall

13379

Females

4475

F45-49

4475

23M→24M

23.0 - 24.0 mi

Top 47%
×6story building
+12ft-82ft

Overall

13413

Females

4534

F45-49

4534

24M→40K

24.0 - 24.9 mi

Top 48%
×1story
+6ft-20ft

Overall

13707

Females

4818

F45-49

4818

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

13443

Females

4752

F45-49

4752

25.2M→Finish

25.2 - 26.2 mi

Top 62%
×2story building
+22ft-21ft

Overall

17593

Females

6861

F45-49

6861

Passing Analysis

Category:
Athletes Passed
2601
Passed By
1369
Net Change
+1232
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17692
5K → 10K240339-99#17692#17791
10K → 15K80501-421#17791#18212
15K → 20K206149+57#18212#18155
20K → Half4636+10#18155#18145
Half → 25K27464+210#18145#17935
25K → 30K50534+471#17935#17464
30K → 20M20328+175#17464#17289
20M → 21M2619+252#17289#17037
21M → 35K7260+12#17037#17025
35K → 23M25010+240#17025#16785
23M → 24M1839+174#16785#16611
24M → 40K15117+134#16611#16477
40K → 25.2M599+50#16477#16427
25.2M → Finish71104-33#16427#16460
TOTALS26011369+1232
📊

Passing Visuals

Category:
Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing