Boston Marathon logo
BOSTON MARATHON 2025

Emma Helstrom

Bib: 17738•F

PA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 33%
Gender (Female)
#0 / 12228
Top 16%
Division (F18-39)
#0 / 5469
Top 28%
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
7:46/mi
24:07
↑ 97↓ 3451.5%
10K· 6.21 mi
7:45/mi
48:13
↑ 79↓ 1380.4%
15K· 9.32 mi
7:42/mi
1:12:09
↑ 67↓ 78
20K· 12.43 mi
7:40/mi
1:35:59
↑ 106↓ 860.1%
Half· 13.11 mi
7:33/mi
1:41:08
↑ 19↓ 370.5%
25K· 15.53 mi
7:37/mi
1:59:35
↑ 66↓ 880.2%
30K· 18.64 mi
7:38/mi
2:23:18
↑ 181↓ 1480.2%
20M
7:31/mi
2:33:31
↑ 64↓ 500.2%
21M
7:28/mi
2:40:59
↑ 106↓ 241.6%
35K· 21.75 mi
7:00/mi
2:46:13
↑ 17↓ 861.7%
23M
7:11/mi
2:55:13
↑ 23↓ 630.6%
24M
6:55/mi
3:02:08
↓ 821.3%
40K· 24.85 mi
6:56/mi
3:08:04
↓ 200.3%
25.2M
7:35/mi
3:10:41
↑ 13↓ 160.2%
Finish· 26.22 mi
6:48/mi
3:17:37
↑ 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 Half
Distance13.11 mi
Time1:41:08
Pace7:43 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:36:29
Pace7:22 /mi
📊Negative Split: 4.6% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:3824:077:4624:07
7:46
-
10K
6.21 mi11:38:4448:137:4624:06
7:45
-0:01
15K
9.32 mi12:02:401:12:097:4423:56
7:42
-0:03
20K
12.43 mi12:26:301:35:597:4323:50
7:40
-0:02
Half
13.11 mi12:31:391:41:087:435:09
7:33
-0:07
25K
15.53 mi12:50:061:59:357:4218:27
7:37
+0:04
30K
18.64 mi13:13:492:23:187:4123:43
7:38
+0:01
20M
20.00 mi13:24:022:33:317:4110:13
7:31
-0:07
21M
21.00 mi13:31:302:40:597:407:28
7:28
-0:03
35K
21.75 mi13:36:442:46:137:395:14
7:00
-0:28
23M
23.00 mi13:45:442:55:137:379:00
7:11
+0:11
24M
24.00 mi13:52:393:02:087:356:55
6:55
-0:16
40K
24.85 mi13:58:353:08:047:345:56
6:56
+0:01
25.2M
25.20 mi14:01:123:10:417:342:37
7:35
+0:39
Finish
26.22 mi14:08:083:17:377:336:56
6:48
-0:47

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

6:48 /mi

Average Pace

7:33 /mi

Slowest Pace

7:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

41:29

21% of race

Time at Steady Pace

2:36:08

79% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:32 /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 mi11:14:3824:077:4624:07
7:46
#14479
10K
6.21 mi11:38:4448:137:4624:06
7:45
#14426
15K
9.32 mi12:02:401:12:097:4423:56
7:42
#14115
20K
12.43 mi12:26:301:35:597:4323:50
7:40
#13568
Half
13.11 mi12:31:391:41:087:435:09
7:33
#13495
25K
15.53 mi12:50:061:59:357:4218:27
7:37
#13009
30K
18.64 mi13:13:492:23:187:4123:43
7:38
#12148
20M
20.00 mi13:24:022:33:317:4110:13
7:31
#11689
21M
21.00 mi13:31:302:40:597:407:28
7:28
#11200
35K
21.75 mi13:36:442:46:137:395:14
7:00
#10942
23M
23.00 mi13:45:442:55:137:379:00
7:11
#10495
24M
24.00 mi13:52:393:02:087:356:55
6:55
#10131
40K
24.85 mi13:58:353:08:047:345:56
6:56
#9794
25.2M
25.20 mi14:01:123:10:417:342:37
7:35
#9660
Finish
26.22 mi14:08:083:17:377:336:56
6:48
#9399
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi144794197419713536(Top 48%)3748(Top 31%)3748(Top 69%)
10K6.21 mi3.10 mi14426+534186+114186+1114402(Top 51%)4184(Top 34%)4184(Top 77%)
15K9.32 mi3.11 mi14115+3114037+1494037+14913536(Top 48%)3748(Top 31%)3748(Top 69%)
20K12.43 mi3.11 mi13568+5473767+2703767+27012150(Top 43%)3074(Top 25%)3074(Top 56%)
Half13.11 mi0.68 mi13495+733727+403727+4012136(Top 43%)2997(Top 25%)2997(Top 55%)
25K15.53 mi2.42 mi13009+4863480+2473480+24710856(Top 38%)2504(Top 20%)2504(Top 46%)
30K18.64 mi3.11 mi12148+8613069+4113069+4118711(Top 31%)1700(Top 14%)1700(Top 31%)
20M20.00 mi1.36 mi11689+4592870+1992870+1997168(Top 25%)1215(Top 10%)1215(Top 22%)
21M21.00 mi1.00 mi11200+4892658+2122658+2124493(Top 16%)493(Top 4%)493(Top 9%)
35K21.75 mi0.75 mi10942+2582542+1162542+1165390(Top 19%)744(Top 6%)744(Top 14%)
23M23.00 mi1.25 mi10495+4472347+1952347+1954837(Top 17%)635(Top 5%)635(Top 12%)
24M24.00 mi1.00 mi10131+3642205+1422205+1424216(Top 15%)506(Top 4%)506(Top 9%)
40K24.85 mi0.85 mi9794+3372075+1302075+1303623(Top 13%)418(Top 3%)418(Top 8%)
25.2M25.20 mi0.35 mi9660+1342025+502025+503925(Top 14%)559(Top 5%)559(Top 10%)
Finish26.22 mi1.02 mi9399+2611947+781947+784572(Top 16%)727(Top 6%)727(Top 13%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 48%
×21story building
+97ft-345ft

Overall

13536

Females

3748

F18-39

3748

5K→10K

3.1 - 6.2 mi

Top 51%
×5story building
+79ft-138ft

Overall

14402

Females

4184

F18-39

4184

10K→15K

6.2 - 9.3 mi

Top 48%
×3story building
+67ft-78ft

Overall

13536

Females

3748

F18-39

3748

15K→20K

9.3 - 12.4 mi

Top 43%
×5story building
+106ft-86ft

Overall

12150

Females

3074

F18-39

3074

20K→Half

12.4 - 13.1 mi

Top 43%
×2story building
+19ft-37ft

Overall

12136

Females

2997

F18-39

2997

Half→25K

13.1 - 15.5 mi

Top 38%
×4story building
+66ft-88ft

Overall

10856

Females

2504

F18-39

2504

25K→30K

15.5 - 18.6 mi

Top 31%
×9story building
+181ft-148ft

Overall

8711

Females

1700

F18-39

1700

30K→20M

18.6 - 20.0 mi

Top 25%
×5story building
+64ft-50ft

Overall

7168

Females

1215

F18-39

1215

20M→21M

20.0 - 21.0 mi

Top 16%
×8story building
+106ft-24ft

Overall

4493

Females

493

F18-39

493

21M→35K

21.0 - 21.8 mi

Top 19%
×7story building
+17ft-86ft

Overall

5390

Females

744

F18-39

744

35K→23M

21.8 - 23.0 mi

Top 17%
×5story building
+23ft-63ft

Overall

4837

Females

635

F18-39

635

23M→24M

23.0 - 24.0 mi

Top 15%
×6story building
+12ft-82ft

Overall

4216

Females

506

F18-39

506

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3623

Females

418

F18-39

418

40K→25.2M

24.9 - 25.2 mi

Top 14%
×1story
+13ft-16ft

Overall

3925

Females

559

F18-39

559

25.2M→Finish

25.2 - 26.2 mi

Top 16%
×2story building
+22ft-21ft

Overall

4572

Females

727

F18-39

727

Passing Analysis

Category:
Athletes Passed
5446*
Passed By
366
Net Change
+5080
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14479
5K → 10K314261+53#14479#14426
10K → 15K37968+311#14426#14115
15K → 20K56316+547#14115#13568
20K → Half829+73#13568#13495
Half → 25K4893+486#13495#13009
25K → 30K8621+861#13009#12148
30K → 20M4590+459#12148#11689
20M → 21M4890+489#11689#11200
21M → 35K2591+258#11200#10942
35K → 23M4470+447#10942#10495
23M → 24M3640+364#10495#10131
24M → 40K337*0+337#10131#9794
40K → 25.2M1362+134#9794#9660
25.2M → Finish2665+261#9660#9399
TOTALS5446*366+5080

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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