Boston Marathon logo
BOSTON MARATHON 2025

Heather Ellison

Bib: 21513•F

UT

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 45%
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
8:22/mi
26:00
↑ 97↓ 3451.5%
10K· 6.21 mi
8:23/mi
52:04
↑ 79↓ 1380.4%
15K· 9.32 mi
8:22/mi
1:18:04
↑ 67↓ 78
20K· 12.43 mi
8:34/mi
1:44:42
↑ 106↓ 860.1%
Half· 13.11 mi
8:21/mi
1:50:24
↑ 19↓ 370.5%
25K· 15.53 mi
9:01/mi
2:12:16
↑ 66↓ 880.2%
30K· 18.64 mi
8:57/mi
2:40:05
↑ 181↓ 1480.2%
20M
9:19/mi
2:52:44
↑ 64↓ 500.2%
21M
9:45/mi
3:02:29
↑ 106↓ 241.6%
35K· 21.75 mi
8:41/mi
3:08:59
↑ 17↓ 861.7%
23M
9:12/mi
3:20:30
↑ 23↓ 630.6%
24M
8:54/mi
3:29:24
↓ 821.3%
40K· 24.85 mi
9:06/mi
3:37:11
↓ 200.3%
25.2M
9:57/mi
3:40:37
↑ 13↓ 160.2%
Finish· 26.22 mi
8:37/mi
3:49:24
↑ 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
Time1:50:24
Pace8:25 /mi
2nd Half
Distance13.11 mi
Time1:59:00
Pace9:05 /mi
📊Positive Split: 7.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:2426:008:2226:00
8:22
-
10K
6.21 mi11:48:2852:048:2326:04
8:23
+0:01
15K
9.32 mi12:14:281:18:048:2326:00
8:22
-0:01
20K
12.43 mi12:41:061:44:428:2526:38
8:34
+0:12
Half
13.11 mi12:46:481:50:248:255:42
8:21
-0:13
25K
15.53 mi13:08:402:12:168:3121:52
9:01
+0:40
30K
18.64 mi13:36:292:40:058:3527:49
8:57
-0:04
20M
20.00 mi13:49:082:52:448:3812:39
9:19
+0:22
21M
21.00 mi13:58:533:02:298:419:45
9:45
+0:26
35K
21.75 mi14:05:233:08:598:416:30
8:41
-1:04
23M
23.00 mi14:16:543:20:308:4311:31
9:12
+0:31
24M
24.00 mi14:25:483:29:248:448:54
8:54
-0:18
40K
24.85 mi14:33:353:37:118:447:47
9:06
+0:12
25.2M
25.20 mi14:37:013:40:378:453:26
9:57
+0:51
Finish
26.22 mi14:45:483:49:248:458:47
8:37
-1:20

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

8:21 /mi

Average Pace

8:45 /mi

Slowest Pace

9:57 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:12:03

84% of race

Time at Steady Pace

33:55

15% of race

Time at Slower Pace

3:26

1% of race

Average Pace: 8:45 /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 mi11:22:2426:008:2226:00
8:22
#19134
10K
6.21 mi11:48:2852:048:2326:04
8:23
#19122
15K
9.32 mi12:14:281:18:048:2326:00
8:22
#18892
20K
12.43 mi12:41:061:44:428:2526:38
8:34
#18803
Half
13.11 mi12:46:481:50:248:255:42
8:21
#18782
25K
15.53 mi13:08:402:12:168:3121:52
9:01
#18995
30K
18.64 mi13:36:292:40:058:3527:49
8:57
#18686
20M
20.00 mi13:49:082:52:448:3812:39
9:19
#18646
21M
21.00 mi13:58:533:02:298:419:45
9:45
#18560
35K
21.75 mi14:05:233:08:598:416:30
8:41
#18481
23M
23.00 mi14:16:543:20:308:4311:31
9:12
#18384
24M
24.00 mi14:25:483:29:248:448:54
8:54
#18289
40K
24.85 mi14:33:353:37:118:447:47
9:06
#18240
25.2M
25.20 mi14:37:013:40:378:453:26
9:57
#18230
Finish
26.22 mi14:45:483:49:248:458:47
8:37
#18181
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi191346983698318514(Top 65%)6613(Top 54%)6613(Top 365%)
10K6.21 mi3.10 mi19122+126971+126971+1219128(Top 67%)6959(Top 57%)6959(Top 384%)
15K9.32 mi3.11 mi18892+2306847+1246847+12418514(Top 65%)6613(Top 54%)6613(Top 365%)
20K12.43 mi3.11 mi18803+896791+566791+5618694(Top 66%)6741(Top 55%)6741(Top 372%)
Half13.11 mi0.68 mi18782+216781+106781+1018368(Top 65%)6545(Top 54%)6545(Top 361%)
25K15.53 mi2.42 mi18995-2136915-1346915-13419991(Top 70%)7527(Top 62%)7527(Top 415%)
30K18.64 mi3.11 mi18686+3096764+1516764+15117442(Top 61%)6273(Top 51%)6273(Top 346%)
20M20.00 mi1.36 mi18646+406771-76771-718341(Top 65%)6914(Top 57%)6914(Top 381%)
21M21.00 mi1.00 mi18560+866755+166755+1617278(Top 61%)6418(Top 52%)6418(Top 354%)
35K21.75 mi0.75 mi18481+796727+286727+2816659(Top 59%)6155(Top 50%)6155(Top 339%)
23M23.00 mi1.25 mi18384+976695+326695+3217332(Top 61%)6624(Top 54%)6624(Top 365%)
24M24.00 mi1.00 mi18289+956676+196676+1916875(Top 59%)6429(Top 53%)6429(Top 355%)
40K24.85 mi0.85 mi18240+496678-26678-216907(Top 60%)6538(Top 53%)6538(Top 361%)
25.2M25.20 mi0.35 mi18230+106685-76685-716881(Top 59%)6535(Top 53%)6535(Top 360%)
Finish26.22 mi1.02 mi18181+496672+136672+1316994(Top 60%)6562(Top 54%)6562(Top 362%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 65%
×21story building
+97ft-345ft

Overall

18514

Females

6613

F45-49

6613

5K→10K

3.1 - 6.2 mi

Top 67%
×5story building
+79ft-138ft

Overall

19128

Females

6959

F45-49

6959

10K→15K

6.2 - 9.3 mi

Top 65%
×3story building
+67ft-78ft

Overall

18514

Females

6613

F45-49

6613

15K→20K

9.3 - 12.4 mi

Top 66%
×5story building
+106ft-86ft

Overall

18694

Females

6741

F45-49

6741

20K→Half

12.4 - 13.1 mi

Top 65%
×2story building
+19ft-37ft

Overall

18368

Females

6545

F45-49

6545

Half→25K

13.1 - 15.5 mi

Top 70%
×4story building
+66ft-88ft

Overall

19991

Females

7527

F45-49

7527

25K→30K

15.5 - 18.6 mi

Top 61%
×9story building
+181ft-148ft

Overall

17442

Females

6273

F45-49

6273

30K→20M

18.6 - 20.0 mi

Top 65%
×5story building
+64ft-50ft

Overall

18341

Females

6914

F45-49

6914

20M→21M

20.0 - 21.0 mi

Top 61%
×8story building
+106ft-24ft

Overall

17278

Females

6418

F45-49

6418

21M→35K

21.0 - 21.8 mi

Top 59%
×7story building
+17ft-86ft

Overall

16659

Females

6155

F45-49

6155

35K→23M

21.8 - 23.0 mi

Top 61%
×5story building
+23ft-63ft

Overall

17332

Females

6624

F45-49

6624

23M→24M

23.0 - 24.0 mi

Top 59%
×6story building
+12ft-82ft

Overall

16875

Females

6429

F45-49

6429

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

16907

Females

6538

F45-49

6538

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1story
+13ft-16ft

Overall

16881

Females

6535

F45-49

6535

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2story building
+22ft-21ft

Overall

16994

Females

6562

F45-49

6562

Passing Analysis

Category:
Athletes Passed
2210
Passed By
1257
Net Change
+953
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19134
5K → 10K256244+12#19134#19122
10K → 15K31888+230#19122#18892
15K → 20K240151+89#18892#18803
20K → Half4423+21#18803#18782
Half → 25K112325-213#18782#18995
25K → 30K39485+309#18995#18686
30K → 20M12787+40#18686#18646
20M → 21M14458+86#18646#18560
21M → 35K9617+79#18560#18481
35K → 23M14548+97#18481#18384
23M → 24M12429+95#18384#18289
24M → 40K8738+49#18289#18240
40K → 25.2M3323+10#18240#18230
25.2M → Finish9041+49#18230#18181
TOTALS22101257+953
📊

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